U-01S - Modules audio TOA - Free user manual and instructions

USER MANUAL U-01S TOA

900 Series Module Guide

Module Faceplate Connections Hot 3 10 kΩ 10 kΩ Common 2 Earth 1 B-41 SENSITIVITY Module Edge Connector 6 +24 VDC 4 Out 3 Ear 2 Mut 1 Mut Mute Switch H C E Electronic Attenuator Module Edge Connector 6 +24 VDC GAIN OUTPUT CAN W 4 Out INPUT GAIN LOW HIGH J6 J5 3 2 1 900 Series 900 Series

2007

TABLE OF CONTENTS

INTRODUCTION....1

MODULE SELECTION ....3

MODULE CATEGORIES

MODEL NUMBERS

SIGNAL LEVELS

INSTALLATION NOTES

MODULE SELECTION CHART 5

MUTING 7

MICROPHONE INPUT MODULES 9

ML-11T Microphone/Line Input with Mute Send/Receive 9

M-01 Series Microphone Input 9

M-11S Microphone Input with Mute-Receive 10

M-21S Microphone Input with Remote Volume Control 10

M-41S Microphone Input with Mute-Send 11

M-51 Series Microphone Input with Voice Gate 11

M-61 Series Microphone Input with Compressor 12

M-03P High Impedance Microphone Input 12

LINE INPUT MODULES 13

ML-11T Microphone/Line Input with Mute Send/Receive....13

B-01 Series Balanced Line Input 13

B-11S Balanced Line Input with Mute-Receive....14

B-21S Balanced Line Input with Remote Volume Control 14

B-41S Balanced Line Input with Mute-Send 15

L-01 Series Line Matching Input 16

L-11S Line Matching Input with Mute-Receive 17

L-41S Line Matching Input with Mute-Send 17

U-01 Series Unbalanced Line Input 18

U-03 Series Unbalanced Line Input with High/Low Cut Filters 19

U-11 Series Unbalanced Line Input with Mute-Receive 19

U-12S Unbalanced Line Input with Variable Mute-Receive Depth 20

U-13 Series Unbalanced Line Input with High/Low Cut Filters and Mute-Receive 20

U-14R Dual Input Priority with AGC....21

U-21S Unbalanced Line Input with Remote Volume Control....21

U-43 Series Unbalanced Line Input with High/Low Cut Filters and Mute-Send 22

U-61S Unbalanced Line Input with Compressor 23

SPECIAL FUNCTION MODULES 24

LINE OUTPUT

T-01S Balanced Line Output....24

T-02S Unbalanced Line Input with Music-On-Hold Output 24

T-12S Unbalanced Line Input with Music-On-Hold Output and Input Mute-Receive....25

TONE GENERATOR

S-20S Digital Message/Tone with USB....25

S-01S 1 kHz Sine Wave Test Tone 26

S-02S Buzzer/Yelp Tone 26

S-04S Switch-Selectable Tone 27

REMOTE VOLUME CONTROL

V-01S Remote Master Volume Control (VCA)....27

SPEAKER PROCESSOR

E-03 Equalizer For F-121 28

E-04 Equalizer For H-1 28

E-05 Equalizer For H-2 28

E-06 Equalizer For H-3 28

E-07 Low Pass Filter For FB-100/HB-1 28

APPLICATIONS....30

1. Paging Over Background Music ....30
2. Telephone Paging and Music-On-Hold 30
3. Banquet Room Sound System 30
4. School Gymnasium Sound System ....31
5. Mute Send and Receive Combination Using Two Modules....31

FREQUENTLY ASKED QUESTIONS ....31

General

1. Which module should I use for a microphone?
2. Which module should I use for a wireless microphone receiver?
3. Which module should I use for an AM/FM tuner, cassette deck, CD player, computer sound card, juke box, mixer or satellite receiver?
4. Which modules should I use for telephone or microphone paging with priority over a music source?
   5.Which module should I use for Music-On-Hold (MOH)?
   6.What type of potentiometer do I need for a Remote Volume Control module?
5. How do I use one of the 900 Series processor modules?
   8.What is the proper wiring for the screw terminal type input modules?
   9.What's the difference between the "L" Series and "B" Series modules?
6. Which modules are for "mute send"?
7. Which modules are for "mute receive"?

Troubleshooting

1. Why won't the M-11 (Microphone Input with Mute-Receive) pass signal?
2. Why won't my paging source override my music source?
3. Why isn't my condenser microphone working with an M Series module?
4. Why is my signal level low with an L Series module?

MODULAR PRODUCTS REFERENCE CHART....33

MODULE CROSS-REFERENCE CHART 34

JUMPER SETTINGS CHART 35

CONNECTOR WIRING CHART....36

Welcome to the TOA 900 Series Module Guide!

In this guide, you'll find everything you need to take advantage of the powerful flexibility of 900 Series modular products — function descriptions; signal flow and wiring diagrams; specifications; jumper settings; application examples; and other useful information.

Understanding the modules will give you the freedom to configure custom systems FAST without complicated modifications. And as your customers' needs change, you can easily add more inputs or new functions by simply changing or adding modules.

An electronic version of the guide is also available for download at http://www.toaelectronics.com. If you have any questions, please contact TOA Product Support at 1-800-733-4748 — we're here to help!

TOA Electronics, Inc.

Dedicated to Bob Sweet, author of the original 900 Series Module Guide, 1990.

Module Categories

There are three main module categories -

1. Mic
2. Line
3. Special Function

Model Numbers

TOA assigns module model numbers using the following convention: a-bbc, where "a" indicates the module "Series", "bb" indicates the module "Function", "c" indicates the module "Connector Type".

For example, with the M-11S module,

"M" indicates "Microphone" Series

"11" indicates "Mute Receive" Function

"S" indicates "Screw Terminal" Connector.

See the "Module Selection Chart" on page 5 for further details.

Signal Levels

There are three general categories of signal levels in audio.

1. Microphone (Mic) Level

• Typically 0.25 mV (-70 dBu) to 2.5 mV (-50 dBu)
• Examples include: microphones, wireless microphone receivers

2.Line Level

• Typically from 100 mV (-18 dBu) to 7.75 V (+20 dBu)
- Examples include: AM/FM tuners, CD players, cassette decks, computer sound cards, jukeboxes, satellite receivers, signal processors, telephone page outputs, wireless microphone receivers

3.Speaker Level

• Typically higher than 7.75 V (+20 dBu)
- Amplifier output for driving speakers
- TOA does not currently offer modules to accept Speaker Level signals (external pad required).

graph TD
    A["Module Series"] --> B["Module Function"]
    B --> C["Module Connector Type"]

Notes:

• Connecting a Mic Level signal to a Line Input module usually results in very low, barely audible, output.
• Connecting a Line Level signal to a Mic Input module usually results in distorted output.
• NEVER connect a Speaker Level signal to a Mic or Line Input module - this will damage the module.
• The type of module connector does not necessarily indicate the input sensitivity. For example, there are both Mic and Line Input modules available with female XLR jacks.

Installation Notes

• Always turn the power OFF on the host unit before installing or removing modules.
- Before installing each module, check the supplied module installation sheet to determine if any configuration is required. See Jumper Settings on page 35 for a list of possible configurations.
- Always secure each module to the host unit's chassis with the supplied screws.

MODULE SELECTION CHART

Removable Terminal Block

Female XLR

Male XLR 1/4" Phone Jack

1/4" Phone Jack

RCA Jack

Dual RCA Jacks

5 Screw Terminals

Microphone Input Modules	Mic/Line Input w/ Mute Send/Receive	ML-11T
	Standard with high/low cut filters	M-01S	M-01F	M-01M	M-01P
	Mute-Receive with high/low cut filters	M-11S
	Mute-Send with high/low cut filters	M-41S
	Voice Gate with low cut filters	M-51S	M-51F
	Compressor with high/low cut filters	M-61S	M-61F
	Remote Volume Control with high/low filters							M-21S
	For high-Z mic. only w/ high/low cut filters				M-03P
Line Input Modules*	Mic/Line Input w/ Mute Send/Receive	ML-11T
	Standard, no special features	B-01S	L-01F
		L-01S	B-01F		U-01P	U-01R
		U-01S	U-01F
	Standard with high/low cut filters	U-03S					U-03R
	Mute-Receive	B-11S
		L-11S				U-11R
		U-11S
	Mute-Receive with high/low cut filters	U-13S					U-13R
	Mute-Receive with variable mute depth	U-12S
	Mute-Send	B-41S
		L-41S
	Mute-Send with high/low cut filters	U-43S					U-43R
	Remote Volume Control							B-21S
								U-21S
	Compressor	U-61S
	Dual input priority w/AGC						U-14R
Special Function Modules	Line output	T-01S
	Line input with Music-On-Hold (MOH) output							T-02S
	Line input w/ MOH & input Mute-Receive							T-12S
	1 kHz Sine Wave test tone	S-01S
	Buzzer/Yelp signal tone	S-02S
	Switch-selectable tone	S-04S
	Digital message/tone with USB	S-20S
	Equalizer for F-122CU Speakers						E-03R
	Equalizer for H-1 Speakers						E-04R
	Equalizer for H-2/H-2WP Speakers						E-05R
	Equalizer for H-3/H-3WP Speakers						E-06R
	Low Pass Filter for FB-100/HB-1 Subwoofers	E-07S
	Remote master volume control (VCA)	V-01S

*For Line Input Modules:
Use "B" modules or ML-11T for balanced/unbalanced sources.
Use "L" modules only for 600 ohm impedance matching.
Use "U" for unbalanced sources w/ short cables (≤ 15 feet).
Note: All "S" type modules with 3-screw terminal connectors transitioned to Removable Terminal Block (Phoenix-type) in 2004. Models include: B-01S, B-11S, L-01S, L-11S, L-41S, M-01S, M-11S, M-51S, M-61S, S-01S, S-02S, S-04S, T-01S, U-01S, U-11S, U-12S and U-61S. New Removable Terminal Block (Phoenix-type) connectors have the following pin-out: H: Hot, C: Common, E: Earth

Module Edge Connector

Top Silk Screen Side 6 +24 VDC 5 Mix Out 4 Hot 3 Earth 2 Mute Bus 1 1 Mute Bus 2

Muting Defined

Muting occurs when one signal source Overrides, or "Mutes", a second signal source. In other words, the first source has Priority over the second source.

For example, a common requirement is for paging to override a music source.

Mute Buses

There are two main types of 900MK2 muting modules - Mute-Receive and Mute-Send.

Both types have mute function circuitry that connects to two common "Mute" buses, and one common "Ground" bus when installed in an A-900MK2 mixer/amplifier or M-900MK2 mixer/pre-amplifier. A "Bus" is simply an internal connection from module-slot to module-slot. You can access these buses via rear-panel screw terminals, labeled, "MUTE 1", "MUTE 2" and "GND".

Mute-type modules connect to both mute buses by default. You can disconnect the module's mute function circuitry from each mute bus by cutting jumper wires on the module. This allows you to configure systems with multiple levels of priority.

Mute Function Activation

By default, Mute-Send modules activate both mute buses and Mute-Receive modules respond to both buses.

You can activate the mute bus(es) using either of two methods:

1. Mute-Send

When input signal level to a Mute-Send module exceeds a user-adjustable threshold, the module's mute function circuitry activates the mute function circuitry of all Mute-Receive modules connected to the same bus. This is also referred to as "signal-activated muting" or "auto-muting".

2. Switch Activation

A switch closure between the "Mute (1 or 2)" and "GND" screw terminals on the rear of the mixer/amplifier will activate the mute function circuitry of all Mute-Receive modules connected to the same bus. This is also referred to as "manual muting".

MICROPHONE INPUT MODULES

ML-11T

ML-11T

BLOCK DIAGRAM

graph TD
    A["Input"] --> B["MOD"]
    B --> C["OUT"]
    C --> D["OUTPUT"]
    D --> E["ELECTRONE ATTENUATION"]
    E --> F["OUTPUT"]
    F --> G["MOD CIRCUITS"]
    G --> H["MOD OFF"]
    H --> I["MOD OUT"]
    I --> J["MOD OUT"]
    J --> K["MOD OUT"]
    K --> L["MOD OUT"]
    L --> M["MOD OUT"]
    M --> N["MOD OUT"]
    N --> O["MOD OUT"]
    O --> P["MOD OUT"]
    P --> Q["MOD OUT"]
    Q --> R["MOD OUT"]
    R --> S["MOD OUT"]
    S --> T["MOD OUT"]
    T --> U["MOD OUT"]
    U --> V["MOD OUT"]
    V --> W["MOD OUT"]
    W --> X["MOD OUT"]
    X --> Y["MOD OUT"]
    Y --> Z["MOD OUT"]
    Z --> AA["MOD OUT"]
    AA --> AB["MOD OUT"]
    AB --> AC["MOD OUT"]
    AC --> AD["MOD OUT"]
    AD --> AE["MOD OUT"]
    AE --> AF["MOD OUT"]
    AF --> AG["MOD OUT"]
    AG --> AH["MOD OUT"]
    AH --> AI["MOD OUT"]
    AI --> AJ["MOD OUT"]
    AJ --> AK["MOD OUT"]
    AK --> AL["MOD OUT"]
    AL --> AM["MOD OUT"]
    AM --> AN["MOD OUT"]
    AN --> AO["MOD OUT"]
    AO --> AP["MOD OUT"]
    AP --> AQ["MOD OUT"]
    AQ --> AR["MOD OUT"]
    AR --> AS["MOD OUT"]
    AS --> AT["MOD OUT"]
    AT --> AU["MOD OUT"]
    AU --> AV["MOD OUT"]
    AV --> AW["MOD OUT"]
    AW --> AX["MOD OUT"]
    AX --> AY["MOD OUT"]

CONNECTOR DIAGRAM

ML-11T

Microphone/Line Input with Mute Send/Receive

• Switchable Mic/Line Input
• Input Trim and Gain Controls
• Adjustable Mute-Send Threshold (VOX sensitivity)
  • High and Low Cut Filters
  • Phantom Power, +24 VDC

• VOX Function – Voice-activated mute send operation
  • Combination Mute Send and Receive Function

• respond to Mute function of higher priority Mute-Send module(s)

• activate Mute function of lower priority Mute-Receive module(s)
  Mute Bus #1 and #2 Connection
  • Hysteresis Function ensures smooth muting transitions
• Connector: removable terminal block

SPECIFICATIONS

Power Source +24VDC

Current Consumption 25mA

Input 1 channel, -60/-20 dB (changeable), 10k ohms,

unbalanced, removable terminal block (3 pins)

Phantom Power +24VDC

Frequency Response 20 - 20,000 Hz, +1, -1 dB

Distortion 0.05%

Gain 10 - 50 dB

M-01 Series Microphone Input

M-01F

M-01MM-01P

M-01S

(old style)
BLOCK DIAGRAM

Module Faceplate Connections Hot Common Earth M-01 Phantom Power J1 600 2.5 kΩ GAIN LOW HIGH Module Edge Connector 6 +24 VDC Output 4 3 Earth

M-01S
(new style)

• For Balanced, Low Impedance Microphones.
• High and Low Cut Filters for tone control, 4.2 kHz and 330 Hz, 6 dB/octave.
• Phantom Power, +22 VDC for condenser-type microphones. Active by default, cut Jumper J1 to disable.
• Connectors: female XLR (M-01F), male XLR (M-01M), 1/4" phone jack (M-01P), removable terminal block (M-01S).

SPECIFICATIONS

Faceplate Controls Gain, high & low cut filters
PCB Controls Phantom power defeat
Input Impedance 600 ohms, balanced transformer-isolated
Sensitivity -70 \~ -50 dBu
Gain 32 \~ 52 dB
Noise (EIN) -126 dBu, 200 ohms terminated

CONNECTOR DIAGRAMS
M-01F

M-01M

M-01P

M-01S (old style)

1 2 3 Hot Common Earth

M-01S (new style)

H C E Earth Common Hot

M-11S Microphone Input with Mute-Receive

M-11S (old style)

M-11S (new style)

BLOCK DIAGRAM

Module Faceplate Connections Hot Common 2 Earth M-11 3 600 Ω:5 kΩ J1 Phantom Power GAIN Electronic Attenuator Module Edge Connector 6 +24 VDC 4 Output LOW HIGH J3 J4 J6 J5 3 Earth 2 Mute 1 1 Mute 2

CONNECTOR DIAGRAM

M-11S (old style)

M-11S (new style)

• For Balanced, Low Impedance Microphones.
• High and Low Cut Filters for tone control, 4.2 kHz and 330 Hz, 6 dB/octave.
• Phantom Power, +22 VDC for condenser-type microphones. Active by default, cut Jumper J1 to disable.
• Responds To Mute Bus Activation, via Mute SEND module or switch-closure.
• Responds To Both Mute Bus # 1 And Mute Bus # 2 By Default (cut jumper(s) to disconnect individual mute bus).

• Two Mute Response Modes (cut jumpers to configure):

• Normally-ON - turns OFF during mute activation (most common)

• Normally-OFF - turns ON during mute activation (functions as an ON/OFF switch, useful for zone-paging microphones in multi-amplifier systems)

Note: Configure the M-11 Mute Response Mode first - it will not pass signal by default. See page 35, Jumper Settings for details.

- Connector: removable terminal block (M-11S).

SPECIFICATIONS

Faceplate Controls Gain, high & low cut filters

PCB Controls Phantom power defeat, mute bus selection

Input Impedance 600 ohms, balanced transformer-isolated

Sensitivity -70 \~ -50 dBu

Gain 32 \~ 52 dB

Noise (EIN) -126 dBu, 200 ohms terminated

M-21S Microphone Input with Remote Volume Control

M-21S

BLOCK DIAGRAM

Module Faceplate Connections Hot 3 Common 2 Earth 1 Remote 4 Volume 5 M-21 Phantom Power J1 600 Ω:5 kΩ Electronic Attenuator GAIN LOW HIGH Electronic Attenuator Module Edge Connector 6 +24 VDC Output 4 3 Earth

CONNECTOR DIAGRAM

M-21S

10 kΩ 4 5 3 1 2 Hot Common Earth

• For Balanced, Low Impedance Microphones.
- High and Low Cut Filters for tone control, 4.2 kHz and 330 Hz, 6 dB/octave.
- Phantom Power, +22 VDC for condenser-type microphones. Active by default, cut Jumper J1 to disable.
- Remote Volume Control by connecting an external 10 kΩ, linear-taper potentiometer to screw terminals #4 and #5.

Note: Control line resistance greater than 200 Ω will prevent full attenuation (200 Ω = 3821 ft. of #24 AWG wire).

• Tip! You can also connect a switch between screw terminals #4 and #5 for remote on/off operation. Closing the switch turns the module OFF, opening the switch turns the module ON.
• Connector: screw terminal (M-21S).

SPECIFICATIONS

Faceplate Controls Gain, high & low cut filters, terminals for

10 kohm linear-taper pot.

PCB Controls Phantom power defeat

Input Impedance 600 ohms, balanced transformer-isolated

Sensitivity -70 \~ -50 dBu

Gain 32 \~ 52 dB

Noise (EIN) -126 dBu, 200 ohms terminated

M-41S Microphone Input with Mute-Send

M-41S

BLOCK DIAGRAM

Module Faceplate Connections Hot 600 Ω:5 kΩ SENSITIVITY Module Edge Connector +24 VDC Common Earth 2 GAIN 4 Output M-41 LOW HIGH J6 3 Earth Mute Switch J5 2 Mute 1 Mute 2

CONNECTOR DIAGRAM

M-41S

H C E Earth Common Hot

• For Balanced, Low Impedance Microphones.
• High and Low Cut Filters for tone control, 4.2 kHz and 330 Hz, 6 dB/octave.
• Phantom Power, +22 VDC for condenser-type microphones. Active by default, cut Jumper J1 to disable.
• Signal At Input Terminals Activates Both Mute Bus # 1 and Mute Bus # 2 by Default (cut jumper(s) to disconnect individual mute bus).
• Connector: removable terminal block (M-41S).

SPECIFICATIONS

Faceplate Controls Gain, high & low cut filters

PCB Controls Mute send sensitivity, phantom power defeat, mute bus selection

Input Impedance 600 ohms, balanced transformer-isolated Sensitivity -69 \~ -45 dBu

Gain 27 \~ 51 dB

Noise (EIN) -124 dBu, 200 ohms terminated

M-51 Series Microphone Input with Voice Gate

M-51F

M-51S (old style)

M-51S (new style)

BLOCK DIAGRAM

Module Faceplate Connections Hot Common Earth M-51 3 2 1 600 Ω.5 kΩ Phantom Power J1 Electronic Switch GAIN 4 Output 3 Earth SENSITIVITY LOW

CONNECTOR DIAGRAMS
M-51F

• For Balanced, Low Impedance Microphones.
• Low Cut Filter for tone control, 330 Hz, 6 dB/octave.
• Phantom Power, +22 VDC for condenser-type microphones. Active by default, cut Jumper J1 to disable.
• Voice Gate Function, module OFF until input signal exceeds threshold.
• Sensitivity Control - turn clockwise to increase sensitivity (to open gate with lower input signal) and counterclockwise to reduce sensitivity (to open gate with higher input signal).
• Connectors: female XLR (M-51F), removable terminal block (M-51S).

SPECIFICATIONS

Faceplate Controls Gain, low cut filter, voice gate sensitivity PCB Controls Phantom power defeat

Input Impedance 600 ohms, balanced transformer-isolated Sensitivity -70 \~ -50 dBu

Gain 32 \~ 52 dB

Gate Sensitivity -58 dBu \~ always open

Noise (EIN) -126 dBu, 200 ohms terminated

M-51S (old style)

M-51S (new style)

M-61 Series Microphone Input with Compressor

M-61F

M-61S (old style)

M-61S (new style)

BLOCK DIAGRAM

Module Faceplate Connections Hot Common Earth M-61 3 2 1 600 Ω 5 kΩ Phantom Power J1 THRESHOLD Electronic Attenuator Module Edge Connector 6 +24 VDC Output 4 LOW HIGH 3 Earth

CONNECTOR DIAGRAMS

M-61F

M-61S (old style)

M-61S (new style)

• For Balanced, Low Impedance Microphones.
• High and Low Cut Filters for tone control, 4.2 kHz and 330 Hz, 6 dB/octave.
• Phantom Power, +22 VDC for condenser-type microphones. Active by default, cut Jumper J1 to disable.
• Compressor Function Helps Prevent Overload And Distortion, activates when the module's input signal exceeds a preset, adjustable threshold.
• Compression Ratio: 2:1 (fixed), reduces the module's output signal level to 1 dB for every 2 dB increase in input signal level.
• Threshold Control - turn CW to lower threshold (to activate compressor function with lower input signal) and CCW to increase threshold (to activate compressor function with higher input signal).
• Connectors: female XLR (M-61F) or removable terminal block (M-61S).

SPECIFICATIONS

Faceplate Controls High and low cut filters, compressor threshold

PCB Controls Phantom power defeat

Input Impedance 600 ohms, balanced transformer-isolated

Sensitivity -70 \~ -50 dBu

Gain 32 \~ 52 dB

Compressor Range 20 dB

Compressor Threshold -64 \~ -44 dBu

Noise (EIN) -126 dBu, 200 ohms terminated

M-03P High Impedance Microphone Input

M-03P

BLOCK DIAGRAM

Module Faceplate Connections Hot 3 Earth 2 M-03 Module Edge Connector +24 VDC GAIN Output LOW HIGH 3 Earth

CONNECTOR DIAGRAM

M-03P

Earth Common Hot

• For Unbalanced, High Impedance Microphones.
- High and Low Cut Filters for tone control, 4.2 kHz and 330 Hz, 6 dB/octave.
- Connector: 1/4" phone jack (M-01P).

SPECIFICATIONS

Faceplate Controls Gain, high & low cut filters

Input Impedance 50 kohms, unbalanced

Sensitivity -60 \~ -40 dBu

Gain 22 \~ 42 dB

Noise (S/N)

70 dB

LINE INPUT MODULES

ML-11T Microphone/Line Input with Mute Send/Receive

ML-11T

BLOCK DIAGRAM

graph TD
    A["Input Selection"] --> B["Low High Cut Out Sense"]
    C["Output"] --> D["Electrical Attenuator"]
    B --> E["Logic Circuits"]
    D --> E
    E --> F["Output"]
    style A fill:#f9f,stroke:#333
    style C fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style D fill:#ccf,stroke:#333
    style E fill:#cfc,stroke:#333
    subgraph Logic Circuits
        F1["200V"]
        F2["200V"]
        F3["200V"]
        F4["200V"]
        F5["200V"]
        F6["200V"]
        F7["200V"]
        F8["200V"]
        F9["200V"]
        F10["200V"]
        F11["200V"]
        F12["200V"]
        F13["200V"]
        F14["200V"]
        F15["200V"]
        F16["200V"]
        F17["200V"]
        F18["200V"]
        F19["200V"]
        F20["200V"]
        F21["200V"]
        F22["200V"]
        F23["200V"]
        F24["200V"]
        F25["200V"]
        F26["200V"]
        F27["200V"]
        F28["200V"]
        F29["200V"]
        F30["200V"]
        F31["200V"]
        F32["200V"]
        F33["200V"]
        F34["200V"]
        F35["200V"]
        F36["200V"]
        F37["200V"]
        F38["200V"]
        F39["200V"]
        F40["200V"]
        F41["200V"]
        F42["200V"]
        F43["200V"]
        F44["200V"]
        F45["200V"]
        F46["200V"]
        F47["200V"]
        F48["200V"]
        F49["200V"]
        F50["200V"]
        F51["200V"]
        F52["200V"]
        F53["200V"]
        F54["200V"]
        F55["200V"]
        F56["200V"]
        F57["200V"]
        F58["200V"]
        F59["200V"]
        F60["200V"]

CONNECTOR DIAGRAM

ML-11T

• Switchable Mic/Line Input
• Input Trim and Gain Controls
• Adjustable Mute-Send Threshold (VOX sensitivity)
  • High and Low Cut Filters
  • Phantom Power, +24 VDC

• VOX Function – Voice-activated mute send operation
  • Combination Mute Send and Receive Function

• respond to Mute function of higher priority Mute-Send module(s)

• activate Mute function of lower priority Mute-Receive module(s)

- Mute Bus #1 and #2 Connection

• Hysteresis Function ensures smooth muting transitions
- Connector: removable terminal block

SPECIFICATIONS

Power Source +24VDC

Current Consumption 25mA

Input 1 channel, -60/-20 dB (changeable), 10k ohms, unbalanced, removable terminal block (3 pins)

Phantom Power +24VDC

Frequency Response 20 - 20,000 Hz, +1, -1 dB

Distortion 0.05%

Gain 10 - 50 dB

B-01 Series Balanced Line Input

B-01F

B-01S (old style)

B-01S (new style)

BLOCK DIAGRAM

Module Faceplate Connections Hot 3 10 kΩ-10 kΩ ModuleEdge Common 2 Output Earth 1 Earth 3 B-01

CONNECTOR DIAGRAMS

B-01F (Balanced/Unbalanced*)

* For unbalanced sources, use a shielded, twisted pair and connect the output to Hot and Common (inner conductors). Connect the shield to Earth at the module and leave unterminated (floating) at the source.

• For Balanced Or Unbalanced Line Level Sources such as mixer outputs, signal processors and wireless microphone receivers.
• Transformer Isolation (10 kΩ) minimizes ground loop problems when connecting remote equipment (greater than 15 feet). Source output should also be balanced.
• Connector: female XLR (B-01F), removable terminal block (B-01S).

SPECIFICATIONS

Input Impedance 10 kohms, balanced transformer-isolated

Sensitivity -16 dBu

Gain -1 dB

B-01S (Balanced/Unbalanced*) (old style)

B-01S (Balanced/Unbalanced*) (new style)

B-11S Balanced Line Input with Mute-Receive

B-11S (old style)

B-11S (new style)

BLOCK DIAGRAM

Module Faceplate Connections Hot 3 10 kΩ:10 kΩ Common 2 Earth 1 B-11 Electronic Attenuator Module Edge Connector 6 +24 VDC Output 4 Earth 3 Mute 2 D4 D3 1 Mute 1

• For Balanced Or Unbalanced Line Level Sources such as mixer outputs, signal processors and wireless microphone receivers.
• Transformer Isolation minimizes ground loop problems when connecting remote equipment (greater than 15 feet).
• Responds To Mute Bus Activation, via Mute SEND module or switch-closure.
• Responds To Both Mute Bus # 1 And Mute Bus # 2 By Default (cut diode(s) to disconnect individual mute bus).
• Connector: removable terminal block (B-11S).

SPECIFICATIONS

PCB Controls Mute bus selection

Input Impedance 10 kohms, balanced transformer-isolated

Sensitivity -16 dBu

Gain -1 dB

CONNECTOR DIAGRAM

B-11S (Balanced/Unbalanced*) (old style)

B-11S (Balanced/Unbalanced*) (new style)

* For unbalanced sources, use a shielded, twisted pair and connect the output to Hot and Common (inner conductors). Connect the shield to Earth at the module and leave unterminated (floating) at the source.

B-21S

Balanced Line Input with Remote Volume Control

B-21S

BLOCK DIAGRAM

graph TD
    A["Hot 3"] --> B["10 kΩ:10 kΩ"]
    C["Common 2"] --> B
    D["Earth 1"] --> B
    E["Remote 4"] --> B
    F["Volume 5"] --> B
    B --> G["Electronic Attenuator"]
    G --> H["Module Edge Connector 6 +24 VDC"]
    H --> I["GAIN"]
    I --> J["Output 4"]
    I --> K["Ground"]
    L["3 Earth"] --> M["Ground"]

• For Balanced Or Unbalanced Line Level Sources such as mixer outputs, signal processors and wireless microphone receivers.
• Transformer Isolation (10 kΩ) minimizes ground loop problems when connecting remote equipment (greater than 15 feet).
• Remote Volume Control by connecting an external 10 kΩ, linear-taper potentiometer to screw terminals #4 and #5.

Note: Control line resistance greater than 200 Ω will prevent full attenuation (200 Ω = 3821 ft. of #24 AWG wire).

• Tip! You can also connect a switch between screw terminals #4 and #5 for remote on/off operation. Closing the switch turns the module OFF, opening the switch turns the module ON.
• Connector: screw terminal (B-21S).

SPECIFICATIONS

Faceplate Controls Gain, terminals for 10 kohm linear-taper pot.

Input Impedance 10 kohms, balanced transformer-isolated

Sensitivity -16 \~ +14 dBu

Gain -32 \~ -2 dB

CONNECTOR DIAGRAM

B-21S (Balanced/Unbalanced*)

10 kΩ 4 5 3 1 2 Hot Common Earth

* For unbalanced sources, use a shielded, twisted pair and connect the output to Hot and Common (inner conductors). Connect the shield to Earth at the module and leave unterminated (floating) at the source.

B-41S Balanced Line Input with Mute-Send

B-41S

BLOCK DIAGRAM

Module Faceplate Connections Hot Common Earth B-41 3 10 kΩ; 10 kΩ SENSITIVITY Module Edge Connector 6 +24 VDC 4 Output 3 Earth 2 Mute 1 1 Mute 2 D4 D3 Mute Switch

CONNECTOR DIAGRAM
B-41S (Balanced/Unbalanced*)

H C E Earth Common Hot

• For Balanced Or Unbalanced Line Level Sources such as mixer outputs, signal processors and wireless microphone receivers.
• Transformer Isolation (10 kΩ) minimizes ground loop problems when connecting remote equipment (greater than 15 feet).
• Signal At Input Terminals Activates Both Mute Bus # 1 and Mute Bus # 2 by Default (cut diode(s) to disconnect individual mute bus).
• Tip! Use the B-41S to connect to most modern telephone system's "Page Output" (usually line level).
• Connector: removable terminal block (B-41S).

SPECIFICATIONS

Faceplate Controls Mute send sensitivity

PCB Controls Mute bus selection

Input Impedance 10 kohms, balanced transformer-isolated

Sensitivity -16 dBu, min. -34 dBu to activate mute function

Gain -2 dB

* For unbalanced sources, use a shielded, twisted pair and connect the output to Hot and Common (inner conductors). Connect the shield to Earth at the module and leave unterminated (floating) at the source.

IMPEDANCE MATCHING

Most modern audio devices have LOW Impedance outputs which are designed to drive HIGH Impedance inputs. This results in Maximum Voltage Transfer - almost all of the output's signal voltage is transferred to the input. This is also referred to as a Bridged connection.

Impedance matching (output impedance to input impedance) results in Maximum Power Transfer and causes approximately 6 dB of signal voltage loss. This often exceeds the source device's "minimum load impedance" specification causing distortion or, at worst, damage to the source's output circuitry.

Maximum Voltage Transfer occurs when input impedance equals at least ten times the source device's output impedance.

For example, if the source's output impedance equals 600 Ω, the input impedance of the next device should equal at least 6 kΩ or greater.

Tip! You can convert the input impedance of an "L" module to 10 kΩ by locating and cutting "R1" (680 Ω) on the module PCB. This will result in approximately 6 dB of additional gain, assuming the source's output impedance is 600 Ω.

L-01 Series Line Matching Input

L-01F

L-01S (old style)

L-01S (new style)

BLOCK DIAGRAM
Module Faceplate

Connections Hot 3 600Ω:10 kΩ Module Edge Common 2 Earth 1 L-01 Output Module Edge Connector 4 Output 3 Earth

CONNECTOR DIAGRAMS

L-01F (Balanced/Unbalanced*)

* For unbalanced sources, use a shielded, twisted pair and connect the output to Hot and Common (inner conductors). Connect the shield to Earth at the module and leave unterminated (floating) at the source.

• For Applications Requiring 600 Ohm Line Matching.
- Transformer Isolation (600 Ω) minimizes ground loop problems when connecting remote equipment (greater than 15 feet).
- Connector: removable terminal block (L-01S).

SPECIFICATIONS

Input Impedance 600 ohms, balanced transformer-isolated

Sensitivity -16 dBu

Gain -2 dB

L-01S (Balanced/Unbalanced*) (old style)

L-01S (Balanced/Unbalanced*) (new style)

L-11S

L-11S (old style)

L-11S (new style)

BLOCK DIAGRAM

Module Faceplate Connections Hot 3 600k Ω:10kΩ Common 2 Earth 1 L-11 Electronic Attenuator Connector 6 +24 VDC Output 4 3 Earth D4 2 Mute 1 D3 1 Mute 2

CONNECTOR DIAGRAM

L-11S (Balanced/Unbalanced*) (old style)

L-11S (Balanced/Unbalanced*) (new style)

Line Matching Input with Mute-Receive

• For Applications Requiring 600 Ohm Line Matching.
• Transformer Isolation (600 Ω) minimizes ground loop problems when connecting remote equipment (greater than 15 feet).
• Responds To Mute Bus Activation, via Mute SEND module or switch-closure.
• Responds To Both Mute Bus # 1 And Mute Bus # 2 By Default (cut diode(s) to disconnect individual mute bus)
• Connector: removable terminal block (L-11S).

SPECIFICATIONS

PCB Controls Mute bus selection

Input Impedance 600 ohms, balanced transformer-isolated Sensitivity -16 dBu

Gain -1 dB

* For unbalanced sources, use a shielded, twisted pair and connect the output to Hot and Common (inner conductors). Connect the shield to Earth at the module and leave unterminated (floating) at the source.

L-41S Line Matching Input with Mute-Send

L-41S (old style)

L-41S (new style)

BLOCK DIAGRAM

Module Faceplate Connections Hot 3 600 Ω:10kΩ Common 2 Earth 1 L-41 SENSITIVITY 10k D4 Mute Switch D3 Module Edge Connector 6 +24 VDC Output 4 Earth 2 Mute 1 1 Mute 2

• For Applications Requiring 600 Ohm Line Matching.
• Transformer Isolation (600 Ω) minimizes ground loop problems when connecting remote equipment (greater than 15 feet).
• Signal At Input Terminals Activates Both Mute Bus # 1 and Mute Bus # 2 Buses by Default (cut diode(s) to disconnect individual mute bus).
• Connector: removable terminal block (L-41S).

SPECIFICATIONS

Faceplate Controls Mute send sensitivity

PCB Controls Mute bus selection

Input Impedance 600 ohms, balanced transformer-isolated

Sensitivity -16 dBu, min. -34 dBu to activate mute

function

Gain -2 dB

CONNECTOR DIAGRAM

L-41S (Balanced/Unbalanced*) (old style)

L-41S (Balanced/Unbalanced*) (new style)

* For unbalanced sources, use a shielded, twisted pair and connect the output to Hot and Common (inner conductors). Connect the shield to Earth at the module and leave unterminated (floating) at the source.

UNBALANCED LINE INPUT

Sources with unbalanced outputs should always be located adjacent to the mixer/amplifier (less than 15 feet). If the source is located further than 15 feet, convert the unbalanced output to

balanced with an appropriate transformer (available from other vendors) and connect to a B or M module, depending on the signal level.

U-01 Series Unbalanced Line Input

BLOCK DIAGRAM

Module Faceplate Connections Hot 3 Earth 2 U-01 Module Edge Connector +24 VDC GAIN Output 3 Earth

• For Unbalanced, Line Level Sources such as AM/FM tuners, cassette decks, CD players, computer sound cards, jukeboxes, mixers and satellite receivers.
• Use For Adjacent Sources (less than 15 feet from the host unit).
• Connectors: female XLR (U-01F), 1/4" phone jack (U-01P), RCA jack (U-01R), removable terminal block (U-01S).

SPECIFICATIONS

Faceplate Controls Gain

Input Impedance 220 kohms, unbalanced

Sensitivity -18 \~ +12 dBu

Gain -30 \~ 0 dB

Noise (S/N) 90 dB

CONNECTOR DIAGRAMS

U-01S (old style)

graph TD
    A["1"] --> B["2"]
    C["3"] --> B
    B --> D["Hot"]
    B --> E["Earth"]

U-01S (new style)

H C E Earth Hot

U-03 Series Unbalanced Line Input with High/Low Cut Filters

U-03 U-03R U-03S

BLOCK DIAGRAM

Module Faceplate Connections Hot 3 Earth 2 U-03 Module Edge Connector 6 +24 VDC GAIN Output LOW HIGH 3 Earth

• For Unbalanced, Line Level Sources such as AM/FM tuners, cassette decks, CD players, computer sound cards, jukeboxes, mixers and satellite receivers.
• Use For Adjacent Sources (less than 15 feet from the host unit).
• High and Low Cut Filters for tone control, 4.2 kHz and 330 Hz, 6 dB/octave.
• Connectors: dual RCA jack w/ passive summing (U-03R), removable terminal block (U-03S).

SPECIFICATIONS

Faceplate Controls Gain, high & low cut filters

Input Impedance 220 kohms, unbalanced

Sensitivity -17 \~ +13 dBu

Gain -30 \~ -1 dB

Noise (S/N) 85 dB

CONNECTOR DIAGRAMS
U-03R

Earth Left Hot Earth Right Hot

U-03S

H C E Earth Hot

U-11 Series Unbalanced Line Input with Mute-Receive

BLOCK DIAGRAM

graph TD
    A["Module Faceplate Connections"] --> B["Hot 3"]
    A --> C["Earth 2"]
    A --> D["U-11"]
    B --> E["Op-Amp"]
    C --> E
    E --> F["GAIN"]
    F --> G["Output 4"]
    G --> H["Module Edge Connector 6 +24 VDC"]
    H --> I["+24 VDC"]
    J["Ground"] --> K["3 Earth"]
    J --> L["2 Mute 1"]
    J --> M["1 Mute 2"]
    N["J5"] --> O["J6"]

• For Unbalanced, Line Level Sources such as AM/FM tuners, cassette decks, CD players, computer sound cards, jukeboxes, mixers and satellite receivers.
• Use For Adjacent Sources (less than 15 feet from the host unit).
• Responds To Mute Bus Activation, via Mute SEND module or switch-closure.
• Responds To Both Mute Bus # 1 And Mute Bus # 2 By Default (cut jumper(s) to disconnect individual mute bus).
• Connectors: RCA jack (U-11R), removable terminal block (U-11S).

SPECIFICATIONS

Faceplate Controls Gain

PCB Controls Mute bus selection

Input Impedance 220 kohms, unbalanced

Sensitivity -18 \~ +12 dBu

Gain -30 \~ 0 dB

Noise (S/N) 90 dB

CONNECTOR DIAGRAMS
U-11R

U-11S (old style)

U-11S (new style)

U-12S Unbalanced Line Input with Variable Mute-Receive Depth

U-12S (old style)

U-12S (new style)

BLOCK DIAGRAM

Module Faceplate Connections Hot 3 Earth 2 U-12 Electronic Attenuator GAIN 6 +24 VDC Output MUTE LEVEL J6 J5 3 Earth 2 Mute 1 1 Mute 2

• For Unbalanced, Line Level Sources such as AM/FM tuners, cassette decks, CD players, computer sound cards, jukeboxes, mixers and satellite receivers.
• Use For Adjacent Sources (less than 15 feet from the host unit).
• Responds To Mute Bus Activation, via Mute SEND module or switch-closure.
• Responds To Both Mute Bus # 1 And Mute Bus # 2 By Default (cut jumper(s) to disconnect individual mute bus).
• Adjustable Mute Depth Provides Ducking Rather Than Full Muting.
• Connector: removable terminal block (U-12S).

SPECIFICATIONS

Faceplate Controls Gain, muting depth

PCB Controls Mute bus selection

Input Impedance 220 kohms, unbalanced

Sensitivity -18 \~ +12 dBu

Gain -30 \~ 0 dB

Muting Depth -60 \~ 0 dB

Noise (S/N) 90 dB

CONNECTOR DIAGRAM
U-12S (old style)

1 2 3 Hot Earth

U-12S (new style)

H C E Earth Hot

U-13 Series Unbalanced Line Input with High/Low Cut Filters and Mute-Receive

U-13R

U-13S

BLOCK DIAGRAM

Module Faceplate Connections Hot 3 Earth 2 U-13 LOW HIGH Electronic Attenuator GAIN Module Edge Connector 6 +24 VDC Output 4 3 Earth 2 Mute 1 1 Mute 2

• For Unbalanced, Line Level Sources such as AM/FM tuners, cassette decks, CD players, computer sound cards, jukeboxes, mixers and satellite receivers.
• Use For Adjacent Sources (less than 15 feet from the host unit).
• High and Low Cut Filters for tone control, 4.2 kHz and 330 Hz, 6 dB/octave.
• Responds To Mute Bus Activation, via Mute SEND module or switch-closure.
• Responds To Both Mute Bus # 1 And Mute Bus # 2 By Default (cut jumper(s) to disconnect individual mute bus).
• Connectors: dual RCA jacks w/ passive summing (U-13R), removable terminal block (U-13S).

SPECIFICATIONS

Faceplate Controls Gain, high & low cut filters

PCB Controls Mute bus selection

Input Impedance 220 kohms, unbalanced

Sensitivity -17 \~ +13 dBu

Gain -30 \~ -1 dB

Noise (S/N) 85 dB

CONNECTOR DIAGRAMS
U-13R

graph LR
    A["Left"] --> B["Hot"]
    C["Right"] --> D["Hot"]
    style A fill:#f9f,stroke:#333
    style C fill:#f9f,stroke:#333

U-13S

H C E Earth Hot

U-14R Dual Input Priority w/AGC and Mute-Receive

U-14R

BLOCK DIAGRAM

graph TD
    A["Module Forward Connections"] --> B["RAM"]
    A --> C["LIME"]
    B --> D["5 OUTR/T"]
    C --> E["2 MUTE 1"]
    D --> F["4 OUTR/T"]
    E --> G["1 MUTE 2"]
    H["Ground"] --> I["Ground"]
    J["Ground"] --> K["Ground"]
    L["Ground"] --> M["Ground"]
    N["Ground"] --> O["Ground"]
    P["Ground"] --> Q["Ground"]
    R["Ground"] --> S["Ground"]
    T["Ground"] --> U["Ground"]
    V["Ground"] --> W["Ground"]
    X["Ground"] --> Y["Ground"]
    Z["Ground"] --> AA["Ground"]

CONNECTOR DIAGRAM

U-14R

• Dual Input Module for applications with business music plus an on-premises CD jukebox or other source
• Two Line Inputs – Jukebox and BGM
• Auto-Mute Function with adjustable Mute threshold (Jukebox overrides BGM)
  • Automatic Gain Control (AGC) on Jukebox input for consistent signal levels
  • Individual Input Level Controls
• Connector: Stereo-Summing Dual RCA Jacks
• Mute-Receive Function – Cut jumper(s) to disable Mute 1 or Mute 2

SPECIFICATIONS

Input 47k ohms (unbalanced)

Maximum Output

Frequency Response

Distortion

Output Level Var. Range

+14 dBV (5 Vrms)

20 - 20.000 Hz, +1, -1 dB

BGM: 0.03% (1 kHz, 1 Vrms)

JUKE: 0.05% (1 kHz, 1 Vrms)

BGM: -24 to -4 dBV (-10 dBV

input to L and R

JUKE: -24 to -4 dBV (-10 dBV

input to L and R)

JUKE Gate Threshold Level Var. Range -60 to -30 dB (input to L and R)

U-21S Unbalanced Line Input with Remote Volume Control

U-21S

BLOCK DIAGRAM

graph TD
    A["Module Faceplate Connections"] --> B["Line Output"]
    A --> C["Hot"]
    A --> D["Earth"]
    A --> E["Remote Volume"]
    A --> F["U-21"]
    B --> G["Electronic Attenuator"]
    C --> G
    D --> G
    E --> G
    F --> G
    G --> H["GAIN"]
    H --> I["Module Edge Connector"]
    I --> J["+24 VDC"]
    I --> K["Output"]
    I --> L["3 Earth"]

CONNECTOR DIAGRAMS
U-21S

4 5 3 1 2 10 kΩ Hot Earth

U-21S (Master Volume)

10 k Ω 4 5 3 1 2 Hot Input Earth Hot Output Earth

• For Unbalanced, Line Level Sources such as AM/FM tuners, cassette decks, CD players, computer sound cards, jukeboxes, mixers and satellite receivers.
• Use For Adjacent Sources (less than 15 feet from the host unit).
• Remote Volume Control by connecting an external 10 kΩ, linear-taper potentiometer to screw terminals #4 and #5.
• Tip! You can also connect a switch between screw terminals #4 and #5 for remote on/off operation. Closing the switch turns the module OFF, opening the switch turns the module ON.
  Note: Control line resistance greater than 200 Ω will prevent full attenuation (200 Ω = 3821 ft. of #24 AWG wire).
• Tip! You can also use the U-21 as a stand-alone Remote Volume control by cutting Jumper J2 to disconnect the module's output from the mix bus. This function is useful in original 900 Series mixer/amplifiers which did not have built-in Remote Master Volume terminals or, as a second Remote Master Volume for the A-903/6/12MK2 mixer/amplifiers, the AX-1000A auto-mixer or the M-900MK2 mixer/pre-amplifier. Connect the module input to the "Pre-Out" jack (or mixer output) and the module output to the "Power-In" jack (or adjacent power amplifier).

- Connector: screw terminal (U-21S).

SPECIFICATIONS

Faceplate Controls Gain, terminals for 10 kohm linear-taper pot.

Input Impedance 220 kohms, unbalanced

Sensitivity -18 \~ +12 dBu

Gain -30 \~ 0 dB

Noise (S/N) 90 dB

U-43 SERIES Unbalanced Line Input with High/Low Cut Filters and Mute-Send

U-43R U-43S

BLOCK DIAGRAM

Module Faceplate Connections Hot 3 Earth 2 U-43 LOW HIGH Mute Switch GAIN J6 J5 Module Edge Connector +24 VDC Output 3 Earth 2 Mute 1 1 Mute 2

CONNECTOR DIAGRAMS

U-43R

Earth Hot Left Earth Hot Right

U-43S

H C E Earth Hot

• For Unbalanced, Line Level Sources such as AM/FM tuners, cassette decks, CD players, computer sound cards, jukeboxes, mixers and satellite receivers.
• Use For Adjacent Sources (less than 15 feet from the host unit).
• High and Low Cut Filters for tone control, 4.2 kHz and 330 Hz, 6 dB/octave.
• Signal At Input Terminals Activates Both Mute Bus # 1 and Mute Bus # 2 by Default (cut jumper(s) to disconnect individual mute bus).
• Connectors: dual RCA jacks w/ passive summing (U-43R), removable terminal block (U-43S).

SPECIFICATIONS

Faceplate Controls Gain, high & low cut filters

PCB Controls Mute send sensitivity, mute bus selection

Input Impedance 220 kohms, unbalanced

Sensitivity -17 \~ +13 dBu

Gain -30 \~ -1 dB

Noise (S/N) 85 dB

U-61S Unbalanced Line Input with Compressor

U-61S (old style)

U-61S (new style)

BLOCK DIAGRAM

graph LR
    A["Line Out 1"] --> B["Hot 3"]
    A --> C["Earth 2"]
    B --> D["Electronic Attenuator"]
    C --> D
    D --> E["GAIN"]
    E --> F["J2"]
    F --> G["Output 4"]
    G --> H["Module Edge Connector 6 +24 VDC"]
    H --> I["3 Earth"]
    J["U-61"] --> D

CONNECTOR DIAGRAMS

U-61S (old style)

graph TD
    A["①"] --> C["Hot"]
    B["②"] --> C["Hot"]
    C --> D["Earth"]

U-61S (Master Compressor - old style)

graph TD
    A["Component 1"] --> B["Component 2"]
    B --> C["Output"]
    D["Hot"] --> E["Input"]
    F["Earth"] --> G["Input"]
    H["Hot"] --> I["Output"]

U-61S (new style)

H C E Earth Hot

U-61S (Master Compressor - new style)

OUTPUT COMMON INPUT H C E

• For Unbalanced, Line Level Sources such as AM/FM tuners, cassette decks, CD players, computer sound cards, jukeboxes, mixers and satellite receivers.
• Use For Adjacent Sources (less than 15 feet from the host unit).
• Compressor Function Helps Prevent Overload And Distortion, activates when the module's input signal exceeds a preset, adjustable threshold.
• Compression Ratio: 2:1 (fixed) reduces the module's output signal level to 1 dB for every 2 dB increase in input signal level.
• Tip! You can also use the U-61 as a standalone Compressor or Master Compressor by cutting Jumper J2 to disconnect the module's output from the mix bus. Connect the "Pre-Out" jack (or mixer output) to the module input and the "Power-In" jack (or adjacent power amplifier) to the module output.
• Connector: removable terminal block (U-61S).

SPECIFICATIONS

Faceplate Controls Gain

Input Impedance 220 kohms, unbalanced

Sensitivity -18 \~ +12 dBu

Gain -30 \~ 0 dB

Compressor Range 20 dB

Compressor Threshold +2 dBu

Noise (S/N) 90 dB

SPECIAL FUNCTION MODULES

T-01S Balanced Line Output

T-01S (old style)

T-01S (new style)

BLOCK DIAGRAM

Module Faceplate Connections Hot 13 Common 2 Earth 1 600 Ω:10 kΩ T-01 GAIN Module Edge Connector 6 +24 VDC 5 Mix Bus 3 Earth

• Transformer-Isolated Line Output of the mixing bus signal to feed other remote mixers, amplifiers, and tape recorders.
• Note: Functions only in specific models - see page 33, Modular Products chart.
• Tip! You can use multiple T-01's to create a distribution amplifier for large multi-amplifier systems, media feeds, recording, etc.
• Connector: removable terminal block (T-01S).

SPECIFICATIONS

Faceplate Controls Output gain

Gain 4 \~ 20 dB

Output

Balanced transformer-isolated,drives

loads ≥ 600 ohms,+15 dBu max.

Noise (S/N) 80 dB

CONNECTOR DIAGRAMS

T-01S (Balanced/Unbalanced) (old style)

1 2 3 Hot Common Earth

T-01S (Balanced/Unbalanced) (new style)

H C E Earth Common Hot

T-02S Unbalanced Line Input with Music-On-Hold Output

T-02S

BLOCK DIAGRAM

Module Faceplate Connections Hot 4 5 1 Common Line Out T-02 GAIN 600 Ω 600 Ω GAIN 6 +24 VDC Output 3 Earth Module Edge Connector

• Unbalanced Line Input for AM/FM tuners, cassette decks, CD players, computer sound cards, jukeboxes, mixers and satellite receivers.
• Balanced, Uninterrupted Output Of Module's Input Signal, transformer-isolated for feeding remote equipment such as a telephone system's Music-On-Hold input.
• Output Gain Control for adjusting the MOH output signal level, eliminating the need for an external 1 Watt MOH amplifier.
• Connector: screw terminal (T-02S).

SPECIFICATIONS

Faceplate Controls Input gain, output gain

Input Impedance 220 kohms, unbalanced

Slave Output Balanced transformer-isolated.drives

loads ≥ 600 ohms,+16 dBu max.

Sensitivity -18 \~ +2 dBu

Gain Mix bus: -20 \~ 0 dB / slave: 4 \~ 20 dB

Noise (S/N) Mix bus: 90 dB / slave: 80 dB

CONNECTOR DIAGRAM

T-02S (Balanced/Unbalanced Output)

graph TD
    A["4"] --> B["1"]
    C["5"] --> B
    D["3"] --> B
    E["2"] --> B
    B --> F["Hot"]
    B --> G["Earth"]
    H["1"] --> I["Common"]
    J["2"] --> I
    I --> K["Hot"]
    I --> L["Output"]
    style A fill:#f9f,stroke:#333
    style C fill:#f9f,stroke:#333
    style E fill:#f9f,stroke:#333
    style F fill:#fff,stroke:#333
    style G fill:#fff,stroke:#333
    style H fill:#fff,stroke:#333
    style I fill:#fff,stroke:#333
    style J fill:#fff,stroke:#333

T-12S Unbalanced Line Input with Music-On-Hold Output & Input Mute-Receive

T-12S

BLOCK DIAGRAM

graph TD
    A["Hot"] --> B["600 Ω-600 Ω"]
    C["Common"] --> B
    D["Earth"] --> B
    E["Common"] --> B
    F["Line out"] --> B
    B --> G["OUTPUT"]
    G --> H["GAIN"]
    H --> I["Electronic Attenuator"]
    I --> J["Module Edge Connector"]
    J --> K["6 +24 VDC"]
    J --> L["4 Output"]
    J --> M["3 Earth"]
    J --> N["2 Mute 1"]
    J --> O["1 Mute 2"]
    P["T-12"] --> Q["Output"]
    R["Electronic Attenuator"] --> S["600 Ω-600 Ω"]
    T["Electronic Attenuator"] --> U["600 Ω-600 Ω"]
    V["Electronic Attenuator"] --> W["600 Ω-600 Ω"]

CONNECTOR DIAGRAM
T-12S (Balanced/Unbalanced Output)

graph TD
    A["4"] --> B["1"]
    C["5"] --> B
    D["3"] --> B
    E["2"] --> B
    B --> F["Hot"]
    B --> G["Earth"]
    H["Input"] --> I["Output"]
    J["Common"] --> K["Output"]

• Unbalanced Line Input for for AM/FM tuners, cassette decks, CD players, computer sound cards, jukeboxes, mixers and satellite receivers.
• Balanced, Uninterrupted Output Of Module's Input Signal, transformer-isolated for feeding remote equipment such as a telephone system's Music-On-Hold input.
• Output Gain Control for adjusting the MOH output signal level, eliminating the need for an external 1 Watt MOH amplifier.
• Responds To Mute Bus Activation, via Mute SEND module or switch-closure.
• Responds To Both Mute Bus # 1 And Mute Bus # 2 By Default (cut jumper(s) to disconnect individual mute bus).
• Tip! You can pair the T-12S with the B-41S Mute-Send module for telephone paging, mutable music input, and uninterrupted MOH output, all with only two modules.
• Connector: screw terminal (T-12S).

SPECIFICATIONS

Faceplate Controls Input gain, output gain

PCB Controls Mute bus selection

Input Impedance 220 kohms, unbalanced

Slave Output: Balanced transformer-isolated, drives

loads ≥ 600 ohms,+16 dBu max.

Sensitivity -18 \~ 0 dBu

Gain Mix bus: -18 \~ 0 dB / slave: 4 \~ 20 dB

Noise (S/N) Mix bus: 85 dB / slave: 85 dB

SPECIAL FUNCTION MODULES: TONE GENERATOR

S-20S Digital Message/Tone w/USB and Mute-Send

S-20S

BLOCK DIAGRAM

graph TD
    A["Module Faceplate Connections"] --> B["VO"]
    B --> C["T"]
    B --> D["G"]
    B --> E["FE"]
    C --> F["MEMORY"]
    D --> F
    E --> F
    F --> G["DAC"]
    G --> H["MUTE SEND"]
    H --> I["1.5F2"]
    I --> J["MUTE OFF"]
    K["Module Edge Connector"] --> L["10 MID1"]
    K --> M["9 MID0"]
    K --> N["7 BUSY"]
    K --> O["6 +24VDC"]
    K --> P["4 OUTPUT"]
    K --> Q["3 EARTH"]
    K --> R["2 MUTE 1"]

CONNECTOR DIAGRAM
S-20S

COMMON STOP 1 2 3 4 STOP COM 4 3 2 1

• Digital Audio Storage Module for messaging and tone-signaling applications
• USB Interface for fast audio file transfer between PC and module
• Three Minutes of CD Quality Digital Storage – 50 to 20k Hz frequency response
  • Versatile CD-ROM Tone Library included
• Accepts Four Audio Files – 44.1 kHz, 16 bit PCM WAV format
  • External Activation for single or continuous playback
  • Automatic Priority overrides current message
• Stop Function immediately cancels playback
• Selectable Playback Interval for each message
  • Auto-Mute Function for priority over background music
• Adjustable Level Control
• USB Cable Included

SPECIFICATIONS

File Format

Frequency Response 50

Distortion

Recording System

Control Inputs

44.1 kHz sampling frequency, 16-bit PCM WAV (monaural)

20.000 Hz +/- 3 dB (1 kHz)

Under 1% (1 kHz)

USB data transfer

Playback 1-4, Stop: No voltage make contact input,

pulse make length: 200ms, open circuit voltage:

24 VDC, short circuit current: 2mA, removable

terminal block (6 pins)

1

3 minutes (180 seconds)

Continuous, 0/5/10/30 seconds, 1/5/10/30 mins..

1 hour (selectable for each message)

S-01S 1 kHz Sine Wave Test Tone

S-01S (old style)

S-01S (new style)

BLOCK DIAGRAM

graph LR
    A["Module Faceplate Connections"] --> B["Signal Generator"]
    C["Common"] --> B
    B --> D["Module Edge Connector"]
    D --> E["+24 VDC"]
    D --> F["Output"]
    D --> G["Earth"]
    H["S-01"] --> I["1 kHz"]
    H --> J["1 kHz"]
    H --> K["Common"]
    L["GAIN"] --> M["Ground"]

CONNECTOR DIAGRAM
S-01S (old style)

S-01S (new style)

• 1 kHz Test Tone, activates with a switch closure (short-circuit) across module screw terminals #2 and #1.
• Connector: removable terminal block (S-01S).

SPECIFICATIONS

Faceplate Controls Gain, terminals for triggering tone

Gain Off \~ 0 dB

Noise (S/N) 80 dB

Available Tone 1 kHz sine wave

S-02S Buzzer/Yelp Tone

S-02S (old style)

S-02S (new style)

BLOCK DIAGRAM

Module Faceplate Connections Yelp Buzzer Common S-02 Yelp, Buzzer Signal Generator GAIN +24 VDC Output 3 Earth

CONNECTOR DIAGRAM

S-02S (old style)

graph TD
    A["Yelp Signal"] --> B["3"]
    B --> C["1"]
    B --> D["2"]
    E["Buzzer Signal"] --> F["0"]

S-02S (new style)

Buzzer Signal 1 2 3 Yelp Signal

• "Buzzer" Tone activates with a switch closure (short-circuit) across module screw terminals #2 and #1.
• "Yelp" Tone activates with a switch closure (short-circuit) across module screw terminals #3 and #1.
• Continuous Tone Activation for the duration of the switch closure.
• Connector: removable terminal block (S-02S).

SPECIFICATIONS

Faceplate Controls Gain, terminals for triggering buzzer and yelp tones

Gain Off \~ 0 dB

Noise (S/N) 80 dB

Available Tones Buzzer, yelp

S-04S Switch-Selectable Tone

S-04S (old style)

S-04S (new style)

BLOCK DIAGRAM

Module Faceplate Connections Single 3 Cont. 2 Common 1 S-04 Signal Generator Tone Select Module Edge Connector 6 +24 VDC GAIN 4 Output 3 Earth

CONNECTOR DIAGRAM
S-04S (old style)

graph TD
    A["Single Tone"] --> B["Node 3"]
    B --> C["Node 1"]
    B --> D["Node 2"]
    E["Continuous Tone"] --> F["Node 2"]

S-04S (new style)

• Eight Available Tones, selected via DIP switches.
• Single Tone Activation with a switch closure (short-circuit) across module screw terminals #3 and #1.
• Continuous Tone Activation with a switch closure (short-circuit) across module screw terminals #2 and #1.
• Applications: doorbell, paging, door/gate release, telephone night ringer, annunciator, class change or pre-announcement tone.
• Connector: removable terminal block (S-04S).

SPECIFICATIONS

Faceplate Controls Gain, terminals to trigger tones (single or repeated)

PCB Controls Dip switch for selecting among 8 tones

Gain Off \~ 0 dB

Noise (S/N) 80 dB

Available Tones 1 tone chime, 2 tone chime, 4 tone chime up, 4 tone chime down, gong, Westminster, holding tone 1, holding tone 2

DIP Switch Settings

S1	S2	S3	Tone
On On On 4 tone chime (up)
Off On On 2 tone chime
On Off On Gong
Off Off On Westminster chime
On On Off 1 tone chime
Off On Off Hold 1
On Off Off Hold 2
Off Off Off 4 tone chime (down)

SPECIAL FUNCTION MODULES: VOLUME CONTROL

V-01S Remote Master Volume Control (VCA)

V-01S

BLOCK DIAGRAM

graph TD
    A["IN"] --> B["Ground"]
    C["OUT"] --> D["Ground"]
    E["HOT"] --> F["Ground"]
    G["CTRL"] --> H["-24V DC"]
    I["24V DC (GROUND)"] --> J["VOLTAGE CONTROLLED ATTENUATOR"]
    K["3 EARTH (GROUND)"] --> L["Module Edge Connector 6 -34VDC"]

CONNECTOR DIAGRAM

V-01S

• Voltage Controlled Amplifier (VCA) for applications requiring preset remote master volume control
• Line Input and Output connect to host amplifier's pre-amp output and power amp input
• 24 VDC Output and Control Input interfaces directly to RDL RLC3 Remote Level Control
• Connectors: RCA and removable terminal block

SPECIFICATIONS

Input

10k ohms (unbalanced)

Max. Allowable Input

-14 dBV (5 Vrms)

Frequency Response

20 - 20,000 Hz +/- 1 dB

Distortion

0.03% (1 kHz, 1 Vrms)

S-04 —

V-01

E Series Processor Modules for TOA Speakers

E-03 E-04 E-05 E-06 E-07 E-03R E-04R E-05R E-06R H C E E-07S

BLOCK DIAGRAM

Module Faceplate Connections Input 1 Red Output 2 White Earth 3 E-03 E-04 E-05 E-06 EQUALIZER Module Edge Connector 6 +24 VDC 3 Earth

CONNECTOR DIAGRAM

H C E Earth Common Hot

• Optimized Equalization Curve For TOA Speakers (see chart).
• Connects Between 900MK2 Mixer/Amplifier's "Pre-Out" And "Power-In" Jacks or Between Separate Mixer and Amplifier (E-03R – E-06R).
  • Includes Dual RCA Cable.
• Unbalanced Input and Output (see Figure 1).
• Connector: dual RCA jack, removable terminal block (E-07S).

Connection Methods:

A-903MK2, A-906MK2, A-912MK2 Mixer/Amplifiers

- Connect the "Pre-amp Out" jack to the E module's "In" jack and the E module's "Out" jack to the "Power Amp In" jack (Figure 2).

M-900MK2 Mixer/Pre-amplifier

- Connect the "Aux. Output" jack to the E module's "In" jack and the E module's "Out" jack to the input of an adjacent power amplifier such as the TOA P-900MK2 Series (Figure 3).

P-906MK2, P-912MK2, P-924MK2 Power Amplifiers

- Connect the mixer output to the E module's "In" jack and the "Out" jack to the amplifier's "Direct Input" screw terminals (Figure 4).

- Note: Since the E module's jacks are unbalanced, install external devices adjacent to the module. If the device is located further than 15 feet, convert all inputs and outputs to balanced with appropriate transformers (available from other vendors).

SPECIFICATIONS (E-03R - E-06R)

Input Impedance 100 kohms, unbalanced

Output Impedance 1 kohms, unbalanced

Sensitivity +2.2 dBu

Output Level +2.2 dBu

Noise (S/N) 86 dB

Modules & Corresponding Speakers

Module: Speaker:

E-03R F-122CU/CU2

E-04R H-1

E-05R H-2/H-2WP

E-06R H-3/H-3WP

E-07S FB-100/HB-1

E Series Processor Modules for TOA Speakers

Figure 1 - E Module Signal Flow (E-03R - E-06R)

Unprocessed signal (from mixer) Processed signal (to amplifier)

Figure 2 - E Module Connection in A-900MK2

UNITED AC 100V/40A POWER AMP IN PRE-AMP OUT Input Output Power Amp In Pre-amp Out

Figure 3 - E Module Connection in M-900MK2 and P-924MK2

Input Output Aux Output Direct Input CAUTION The circuit is required and the circuit includes: TOU and POWER of TOU. MODEL P-926002 DIRECT OUTPUT RATED SHOW TRANSFORMER OUTPUT RATED 220W TDA Corporation INDEPENDENT ON AND/OR OR WITHAN CONTROL WARNING WARNING: The circuit is required FOR CONNECTION OF INPUT MODULES - SEE OPERATING INSTRUCTIONS.

Figure 4 - E Module Connection in P-900MK2

POUT MIXER CAUTION TO REDUCE THE BIG OF THE RELAUX WITH THE BIG OF THE RELAUX WITH THE BIG OF THE RELAUX CLASS I WIRING WAY BE V/SED. 70V 25V 10V OUT OT IN. PROVEE SHORES DIRECT OUTPUT MOUNT VIEW TRANSFORMER OUTPUT MOUNT VIEW TDA Corporation TRANSFORMER TRANSFORMER INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT INT IN PULSE TIN: OF INPUT RESOLUCE - USE OPERATING INSTRUCTIONS. WARNING: TO REDUCE THIS BIG OF THE DATA CONTINUING DATA, IF NOT USING THE INFORMATION TO READ ON MODELS. INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: INPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT OUT: OUTPUT IN PULSE TIN: OF INPUT RESOLUCE - USE OPERATING INSTRUCTIONS. OUTPUT IN PULSE TIN: OF INPUT RESOLUCE - USE

APPLICATIONS

Paging Over a Music Source

1. Connect the Telephone Page output to a B-41S (Balanced Line Input with Mute-Send) module or, for Microphone Paging, use an M-41S (Microphone Input with Mute-Send) module.
2. Connect the Music Source to a U-13R (Unbalanced Line Input with Mute-Receive) module.
3. Adjust the mute threshold as necessary with the Sensitivity control (located on the mute-send module's circuit board). If the paging audio falls below the mute threshold for greater than approximately two seconds, the music will resume.

Since mute-type modules connect to both Mute Bus #1 and #2 by default, no jumper configuration is required.

A-912MK2 Speaker System B-41S U-13R BGM source (adjacent to amplifier) Telephone Page A-912MK2 Speaker System M-41S U-13R BGM source (adjacent to amplifier) Microphone Page

Telephone Paging and Music-On-Hold

1. Connect the Telephone Page output to a B-41S (Balanced Line Input with Mute-Send) module.
2. Connect the Music Source to a T-12S (Unbalanced Line Input with Music-On-Hold Output) module's input.
3. Connect the T-12S module's output to the telephone system's Music-On-Hold input.
4. Adjust the output signal level with the T-12S front panel Output Gain control.

Since mute-type modules connect to both Mute Bus #1 and #2 by default, no jumper configuration is required.

A-912MK2 Speaker System B-41S T-12S Telephone System Music-On-Held Input Music Source (adjacent to amplifier) Telephone Page

Banquet Room Sound System

Banquet room sound systems usually include a podium microphone and a music source. Since there will be a variety of presenters, the signal level present at the microphone will vary. The music volume level will also need to be remote controlled from the podium. Because the microphone level will not be continuous, Switch Closure Muting will be necessary to ensure that the music remains off until after the presentation.

1. Connect the Podium Microphone to an M-61S (Microphone Input with Compressor).
2. Connect the Music Source output to a U-21S (Unbalanced Input with Remote Volume Control).
3. Connect a 10 kΩ linear-taper potentiometer to screw terminals 4 and 5 of the U-21S.
4. Connect a switch (normally-open) between screw terminals 4 and 5 of the U-21S.

A-912MK2 Speaker System Volume Control (10 kohm linear-taper potentiometer) Music Source (adjacent to amplifier) Switch (pins #4 and 5, U-21S) Podium Microphone M-61S U-21S

1. Set the M-61S Threshold control according to the highest potential signal at the microphone.

Closing the switch mutes the music, opening the switch allows the music to resume.

School Gymnasium Sound System

School gymnasium sound systems often have similar requirements as the banquet room system plus telephone paging which must override both the podium microphone and the music.

1. Connect the Telephone Page output to a B-41S (Balanced Line Input with Mute-Send) module.
2. Connect the Podium Microphone to an M-11S (Microphone Input with Mute-Receive) after cutting Jumpers J4 and J5. This configures the module for Normally-On mute activation mode on Mute Bus #1 only.
3. Connect a switch (normally-open) between the screw terminals Mute #2 and Ground on the amplifier's rear panel.
4. Connect the Music Source output to a U-13R (Unbalanced Line Input with Mute-Receive) module.

Pressing the podium mic's "press-to-talk" switch activates Mute Bus #2 and mutes the music. The telephone page activates both Mute Bus #1 and #2, muting both the podium mic and the music source.

A-912MK2 Speaker System B-41S M-11S U-13R Mute 2 and GND screw terminals PTT switch Music Source Pedium Mic Telephone Page

FREQUENTLY ASKED QUESTIONS

General

1 Which module should I use for a microphone? For a standard low impedance microphone, use the ML-11T or, for a high impedance microphone (uncommon), use the M-03. See pages 9-12 for details on other available microphone modules.

2 Which module should I use for a wireless microphone receiver? If the wireless receiver has a line-level output, use the B-01 or, for a mic level output, use the ML-11T. Both types give you the flexibility to locate the receiver remote from the module, if necessary. See pages 9-23 for details on other available microphone and line input modules.

3 Which module should I use for an AM/FM tuner, cassette deck, CD player, computer sound card, jukebox, mixer or satellite receiver? If the source will be less than 15 feet from the module, use the U-03R or, to respond to mute activation, the U-13R. Both modules have dual RCA jacks for quick connection of stereo sources and high/low-cut filters for EQ adjustment. If the music source is further than 15 feet, use the B-01 or the B-11, which accept balanced lines and offer transformer isolation. See pages 13-23 for details on other available line input modules.

4 Which modules should I use for telephone or microphone paging with priority over a music source? Use the B-41 for the telephone paging input or the M-41 for microphone paging. If the music source is less than 15 feet, use the U-13. If the music source is further than 15 feet, use the B-11, which accepts balanced lines and offers transformer isolation.

5 Which module should I use for Music-On-Hold (MOH)? Use the T-12 module which has an unbalanced line input for the MOH source plus a balanced, transformer-isolated, adjustable output to connect to the telephone system's MOH input. The MOH signal routes to both the internal mix bus and the MOH output. The mix bus input also responds to mute bus activation without interrupting the MOH output. See page 25 for more information.

6 What type of potentiometer do I need for a Remote Volume Control module? Use a commonly available, 10 kΩ, linear-taper potentiometer for the B-21, M-21, or U-21 Remote Volume Control modules. Also, use the same type for the rear-panel Remote Master Volume screw terminals on A-903MK2, A-906MK2 and A-912MK2 mixer/amplifiers, or the M-900MK2 mixer/pre-amplifier.

General

7 How do I use one of the 900 Series processor modules?

When using one of the processor modules such as the E-03R, E-04R, E-05R, E-06R with an A-900MK2, insert the module in an empty module slot. Then run a cable from the pre-amp out jack located on the rear of the A-900MK2 to the input jack of the processor module. Next run a cable from the output jack of the module to the power amp in jack on the rear of the amp. This will route all audio signal through the processor module before it reaches the power amp section of the unit.

When using a processor module with an M-900MK2 mixer and P-900MK2 power amp, the processor module can be inserted in an empty slot on the M-900MK2. Connect a cable from the aux out jack on the M-900MK2 to the input of the processor module. Then connect a cable from the output jack of the processor module to the input of the P-900MK2 power amp.

Another way of doing this would be to insert the processor module in the module slot of the P-900MK2. Connect a cable from the output of the mixer to the input of the processor module. Then connect a cable from the output of the module to the screw terminal input of the P-900MK2 power amp.

8 What is the proper wiring for the screw terminal type input modules?

Pin 1: Earth. Pin 2: Common. Pin 3: Hot. When wiring an unbalanced source to a balanced input module: Connect the source (+) output to Pin 3 Hot. Connect the source (-) or shield output to Pin 2 Common.

9 What's the difference between the "L" Series and "B" Series modules?

“B” Series modules are balanced, line level, high impedance inputs.

“L” Series modules are balanced, line level, low impedance inputs.

Most modern audio equipment provide low impedance outputs which are designed to drive high impedance inputs. Maximum voltage transfer occurs when the input impedance is at least ten times the source output impedance. Almost all of the output signal voltage is transferred to the input.

Impedance matching (output impedance to input impedance) results in maximum power transfer and causes approximately -6dB of signal voltage loss. This can often exceed a source device's minimum output load impedance specification. In most cases, use B Series instead of L Series modules.

10 Which modules are for "mute send"?

M-41S for microphone level input. B-41S, L-41S for balanced line level input. U-43R, U-43S for unbalanced line level input. ML-11T for microphone or line level input (selectable). S-20S is a digital message repeater module with mute send select-ability.

11 Which modules are for "mute receive"?

M-11S for microphone level input. B-11S for balanced line level input. L-11 for balanced or unbalanced line level input, low impedance, line matching. ML-11T for microphone or line level input (selectable). U-11R, U-11S, U-12S & U-13R can be used for unbalanced line level input. U-14R for unbalanced dual input priority (Jukebox input mutes BGM input), both are muted when the mute receive jumper is set.

Troubleshooting

12 Why won't the M-11 (Microphone Input with Mute-Receive) pass signal?

The M-11 will not pass signal "out-of-the-box". Cut jumpers to select the mute response mode: Normally-Off or Normally-On. See page 35, Jumper Settings, for more information.

13 Why won't my paging source override my music source?

First, verify that the paging source is connected to a Mute-Send module and the music source is connected to a Mute-Receive module. Next, verify that the module jumpers are configured for Mute Bus #1 or Mute Bus #2 (or both). Test the Mute-Receive module's mute function by placing a jumper between Mute Bus #1 (or #2) and Ground terminals. Last, adjust the Mute-Send module's "Sensitivity" control to lower the mute activation threshold. The Mute-Send module activates the mute function based on input signal level exceeding this threshold.

14 Why isn't my condenser microphone working with an M Series module?

Verify that Jumper "J1" on the M Series module circuit board is intact and secure the module to the chassis with the supplied screws.

15 Why is my signal level low with an L Series module?

Removing resistor R1 (680 Ω) on the module's circuit board will provide approximately 6 dB additional gain by converting the module's input impedance to 10 kΩ. See page 16, "Impedance Matching".

MODULAR PRODUCTS REFERENCE

Model A-706

A-901A

A-903A

A-903MK2

BG-1015 M-900A

M-900MK2

P-906A

P-906MK2

W-906A

A-712

A-906A

A-906MK2

BG-1030 P-912A

P-912MK2

W-912A

A-724

A-912A

A-912MK2

BG-1060

BG-1120

P-924A

P-924MK2

Mixer/Amplifier

Mixer/Amplifier

Mixer/Amplifier

Mixer/Amplifier

Mixer/Amplifier

Mixer/Pre-amplifier

Mixer/Pre-amplifier

PowerAmplifier

PowerAmplifier

Wall-mountMixer/Amplifier

Discontinued

Discontinued

Discontinued

Discontinued

Screw terminalor RTBmodulesonly

Power

60 / 120 /240 W

10 W

30 / 60 /120 W

30 / 60 /120 W

15 / 30 /60 / 120 W

N/A

N/A

60 / 120 /240 W

60 / 120 /240 W

60 / 120 W

Module Slots

1

2

6

8

1

6

8

1

1

6 (exp. to 8)

Mute Bus(es)

1

1

1

2

N/A

1

2

0

0

1

Pre-Out /Power-InJacks

Y

N

Y

Y

Y

N

N

N

N

N

MODULE

ML-11T

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

M-01

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

M-11

N

Ch. #2 only

Y

Y

N

Y

Y

N

N

Y

M-21

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

M-41

N

Ch. #2 only

Y

Y

N

Y

Y

N

N

Y

M-51

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

M-61

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

M-03

Y

Y

Y

Y

Y

Y

Y

Y

Y

N

B-01

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

B-11

N

Ch. #2 only

Y

Y

N

Y

Y

N

N

Y

B-21

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

B-41

N

Ch. #2 only

Y

Y

N

Y

Y

N

N

Y

L-01

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

L-11

N

Ch. #2 only

Y

Y

N

Y

Y

N

N

Y

L-41

N

Ch. #2 only

Y

Y

N

Y

Y

N

N

Y

U-01

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

U-03

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

U-11

N

Ch. #2 only

Y

Y

N

Y

Y

N

N

Y

U-12

N

Ch. #2 only

Y

Y

N

Y

Y

N

N

Y

U-13

N

Ch. #2 only

Y

Y

N

Y

Y

N

N

Y

U-14R

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

U-21

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

U-43

N

Ch. #2 only

Y

Y

N

Y

Y

N

N

Y

U-61

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

T-01

Y

N

Ch. #5 and#6 only

Y

Y

Ch. #5 and#6 only

Y

N

N

Ch. #5 and#6 only

T-02

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

T-12

N

Ch. #2 only

Y

Y

N

Y

Y

Y

Y

Y

S-01

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

S-02

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

S-04

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

S-20S

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

V-01S

Y

Y

Y

Y

Y

Y

Y

Y

Y

Y

E-03/04

Y

N

Y

Y

Y

Y

Y

Y

Y

N

E-05/06

Y

N

Y

Y

Y

Y

Y

Y

Y

N

E-07

Y

N

Ch. #5 and#6 only

Y

Y

Ch. #5 and#6 only

Y

N

N

Ch. #5 and#6 only

DISCONTINUED MODULE CROSS-REFERENCE

Discontinued Description Current Model
H-01 Microphone Input, Low Impedance M-01 Series, ML-11T
H-02 Microphone Input, Low Impedance (Low cut only) M-01 Series, ML-11T
H-21 Microphone Input, Low Impedance, with Remote Volume Control M-21S
H-22	Microphone Input, Low Impedance, with Remote Volume Control (Low cut only)	M-21S
H-31 Microphone Input, Low Impedance, with Mute Receive M-11S, ML-11T
H-32 Microphone Input, Low Impedance, with Mute-Receive (Low cut only) M-11S, ML-11T
H-03 Microphone Input, High Impedance M-03P
S-03S Chime S-04S
X-01 Unbalanced Line Input U-01, U-03 Series
X-11 Unbalanced Line Input with Mute-Receive		U-11, U-13 Series
X-21	Unbalanced Line Input with Remote Volume Control	U-21S

Notes:

• H Series microphone modules do not provide phantom power.
• Original mute-type modules (pre-1994) connect to Mute Bus #1 only. Newer "MK2" mute-type modules connect to both Mute Bus #1 and Mute Bus #2 and have a "MK2" label on the module faceplate.

JUMPER SETTINGS

Function Model Jumper Jumper Details
Mute-Receive M-11, T-12, U-11, J5 J6U-12, U-13, U-14R ON ON
		ON Responds to both Mute Bus #1 and Mute Bus #2 activation.
		CUT ON Responds to Mute Bus #1 activation only
		ON CUT Responds to Mute Bus #2 activation only
		CUT CUT No mute function
		B-11, L-11 D3	D4
			ON ON Responds to both Mute bus #1 and Mute bus #2 activation.
			CUT ON Responds to Mute Bus #1 activation only
			ON CUT Responds to Mute Bus #2 activation only
			CUT CUT No muting
M-11S Mute Response Mode	M-11	J3 J4		(Normally-On or Normally-Off)
		ON ON No output signal - cut J3 or J4.
		CUT ON Normally "OFF" turns "ON" during mute bus activation
		ON CUT Normally "ON" turns "OFF" during mute bus activation
		CUT CUT No muting function.
Mute-Send	S-20S	SJP2		Enables Mute Send (VOX)
	M-41, U-43	J5 J6
		ON ON Activates both Mute Bus #1 and Mute Bus #2
		CUT ON Activates only Mute Bus #1
		ON CUT Activates only Mute Bus #2
		CUT CUT No mute activation.
	B-41, L-41 D3	D4
		ON ON Activates both Mute Bus #1 and Mute Bus #2
		CUT ON Activates only Mute Bus #1
		ON CUT Activates only Mute Bus #2
		CUT CUT No mute activation.
Phantom Power	M-01, M-11, M-21,M-41, M-51, M-61	J1
		CUT		Disables phantom power.
Master Compressor	U-61	J2
		CUT		Configures module as a Master Compressor(see page 23).
Remote Master Volume	U-21	CUT		Configures module as a Remote Master Volume control(see page 21).
Input Impedance Conversion(600 Ω to 10 kΩ)	L-01, L-11, L-41	R1
		CUT		Changes input impedance from 600 Ω to 10 kΩallowing maximum voltage transfer (see page 16).
Hysteresis	ML-11T	SJP101		Disables Mute Send hysteresis
		CUT
Mute Send (VOX)		SJP102		Enables VOX function
		ON		Disables VOX function
		OFF
Mute Bus #1		SJP103		Responds to Mute Bus #1 activation only
		Receive		Activates only Mute Bus #1
		Send
		N/A Disconnects from Mute Bus #1
Mute Bus #2		SJP104		Responds to Mute Bus #2 activation only
		Receive		Activates only Mute Bus #2
		Send
		N/A Disconnects from Mute Bus #2

Note:
1. In many applications, NO jumper changes are required. Mute-Receive and Mute-Send modules connect to both Mute Bus #1 and Mute Bus #2 by default.
2. Configure the M-11S Mute Response Mode before use - it will not pass signal out-of-the-box.

CONNECTOR WIRING

Model Connector Type Pinout
B-01F XLR jack, Female Pin 1: Earth (shield) Pin 2: Common Pin 3: Hot
B-01S Removable terminal block Pin 1: Earth (shield) Pin 2: Common Pin 3: Hot
B-11S Removable terminal block Pin 1: Earth (shield) Pin 2: Common Pin 3: Hot
B-21S Screw terminals, 5 pin Pin 1: Earth (shield) Pin 2: Common Pin 3: Hot
		Pin 4 and 5: Remote Volume Control - 10 kΩ (linear-taper potentiometer)
B-41S Removable terminal block H: Hot C: Common E: Earth (shield)
E-03R RCA jack, dual Tip: Hot Sleeve: Earth (shield)
E-04R RCA jack, dual Tip: Hot Sleeve: Earth (shield)
E-05R RCA jack, dual Tip: Hot Sleeve: Earth (shield)
E-06R RCA jack, dual Tip: Hot Sleeve: Earth (shield)
E-07S	Removable terminal block	Pin 1: Earth (shield)	Pin 2: Common	Pin 3: Hot (output)
L-01F XLR jack, Female Pin 1: Earth (shield) Pin 2: Common Pin 3: Hot
L-01S	Removable terminal block	Pin 1: Earth (shield)	Pin 2: Common	Pin 3: Hot
L-11S	Removable terminal block	Pin 1: Earth (shield)	Pin 2: Common	Pin 3: Hot
L-41S	Removable terminal block	Pin 1: Earth (shield)	Pin 2: Common	Pin 3: Hot
M-01F	XLR jack, Female	Pin 1: Earth (shield)	Pin 2: Common	Pin 3: Hot
M-01M	XLR jack, Male	Pin 1: Earth (shield)	Pin 2: Common	Pin 3: Hot
M-01P	1/4" phone jack	Tip: Hot	Ring: Common	Sleeve: Earth (shield)
M-01S	Removable terminal block	Pin 1: Earth (shield)	Pin 2: Common	Pin 3: Hot
M-03P	1/4" phone jack	Tip: Hot	Ring: Common	Sleeve: Shield
M-11S	Removable terminal block	Pin 1: Earth (shield)	Pin 2: Common	Pin 3: Hot
M-21S	Screw terminals, 5 pin	Pin 1: Earth (shield)	Pin 2: Common	Pin 3: Hot
		Pin 4 and 5: Remote Volume Control - 10 kΩ (linear-taper potentiometer)
M-41S	Removable terminal block H: Hot C: Common E: Earth (shield)
M-51F	XLR jack, Female	Pin 1: Earth (shield)	Pin 2: Common	Pin 3: Hot
M-51S	Removable terminal block	Pin 1: Earth (shield)	Pin 2: Common	Pin 3: Hot
M-61F	XLR jack, Female	Pin 1: Earth (shield)	Pin 2: Common	Pin 3: Hot
M-61S	Removable terminal block	Pin 1: Earth (shield)	Pin 2: Common	Pin 3: Hot
ML-11T	Removable terminal block	Hot	Cold	Earth
S-01S	Removable terminal block	Pin 1: Earth	Pin 2: 1 kHz Tone	Pin 3: n/a
S-02S	Removable terminal block	Pin 1: Earth	Pin 2: Buzzer	Pin 3: Yelp
S-04S	Removable terminal block	Pin 1: Earth	Pin 2: Continuous Tone	Pin 3: Single Tone
S-20S	Removable terminal block	Message 1 - 4	Stop	Common
T-01S	Removable terminal block	Pin 1: Earth (shield)	Pin 2: Common	Pin 3: Hot (output)
T-02S	Screw terminals, 5 pin	Pin 1: Earth (shield)	Pin 2: Common (output)	Pin 3: Hot (output)
		Pin 4: Hot (input)	Pin 5: Earth (shield)
T-12S	Screw terminals, 5 pin	Pin 1: Earth (shield)	Pin 2: Common (output)	Pin 3: Hot (output)
		Pin 4: Hot (input)	Pin 5: Earth (shield)
U-01F	XLR jack, Female	Pin 1: Earth (shield)	Pin 2: Earth (shield)	Pin 3: Hot
U-01P	1/4" phone jack	Tip: Hot	Sleeve: Earth (shield)
U-01R	RCA jack, single	Tip: Hot	Sleeve: Earth (shield)
U-01S	Removable terminal block	Pin 1: Earth (shield)	Pin 2: Earth (shield)	Pin 3: Hot
U-03R	RCA jack, dual (stereo summing)	Tip: Hot	Sleeve: Earth (shield)
U-03S	Removable terminal block	H: Hot	C: Common	E: Earth (shield)
U-11R	RCA jack, single	Tip: Hot	Sleeve: Earth (shield)
U-11S	Removable terminal block	Pin 1: Earth (shield)	Pin 2: Earth (shield)	Pin 3: Hot
U-12S	Removable terminal block	Pin 1: Earth (shield)	Pin 2: Earth (shield)	Pin 3: Hot
U-13R	RCA jack, dual (stereo summing)	Tip: Hot	Sleeve: Earth (shield)
U-13S	Removable terminal block	H: Hot	C: Earth (shield)	E: Earth (shield)
U-14R	RCA jack, dual (stereo summing)	Tip: Hot	Sleeve: Earth (shield)
U-21S	Screw terminals, 5 pin	Pin 1: Output (cut J2)	Pin 2: Earth (shield)	Pin 3: Hot
		Pin 4 and 5: Remote Volume Control - 10 kΩ (linear-taper potentiometer)
U-43R	RCA jack, dual (stereo summing)	Tip: Hot	Sleeve: Earth (shield)
U-43S	Removable terminal block	H: Hot	C: Earth (shield)	E: Earth (shield)
U-61S	Removable terminal block	Pin 1: Output (cut J2)	Pin 2: Earth (shield)	Pin 3: Hot
V-01S	Removable terminal block	Tip: Hot	Sleeve: Earth (shield)	+/-24 VDC CTRL

TOA ELECTRONICS, INC.

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TOA CANADA

CORPORATION

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900 Series Modules Module Faceplate Connections Sensitivity Hot 13 10 kΩ:10 kΩ Common 12 Earth 1 B-41 Mute Switch H C E Electronic Attenuator Module Edge Connector 6 +24 VD6 4 Output 3 Earth 2 Mute 1 1 Mute 2 T-12 OUTPUT HIGH W GAIN 4 Output INPUT GAIN LOW HIGH J6 J5 3 2 1 In 4 5 3 2