MEDIAMATRIX CAB 8I - Speaker system PEAVEY - Free user manual and instructions

Product Type	CobraNet audio gateway 8 inputs (CAB 8i)
Audio Channels	8 input channels (mic/line level) with CobraNet protocol, 48 kHz sampling
A/D Converters	24-bit, 64x oversampling, delta-sigma modulation
Phantom Power	48 V duplex, software switchable per channel
Frequency Response	20 Hz - 20 kHz, +0/-0.5 dB
Total Harmonic Distortion	0.01 % at 1 kHz, 0.02 % at 20 kHz (+4 dBu signal)
Dynamic Range (line level)	95 dBA, 93 dB unweighted
Common Mode Rejection Ratio (CMRR)	> 65 dB, up to 73 dB depending on setting
Maximum Input Level	+29 dBu (0 dB attenuation), +38 dBu (20 dB attenuation)
Input Gain	-9 to +60 dB in 1 dB steps, software controlled
Input Impedance	2.2 kΩ (mic), 22.2 kΩ (line)
Transmission Resolution	20 or 24 bits selectable
Control Ports	8 analog voltage inputs (0-10 V), 8 TTL outputs (0/5 V, 28 mA max), 8 relays (120 V/2 A max), RS-485, 2 BNC word clock
Audio Input Connectors	European-style pluggable screw terminals
Network Interface	Ethernet 100BaseT via RJ-45
Dimensions (H x W x D)	4.39 x 48.26 x 29.71 cm (1.73 x 19 x 11.7 in)
Net Weight	3.86 kg (8.5 lb)
Power Supply	100-240 V~, 47-63 Hz, 1.4 A max
Consumption	25 W (85 BTU/h)
Certifications	UL, ULC, CE, FCC Part 15A
Supplied Accessories	Power cord, 4 adhesive rubber feet
Typical Applications	Stadiums, auditoriums, theaters, conference rooms, houses of worship, etc.

Frequently Asked Questions - MEDIAMATRIX CAB 8I PEAVEY

What is the role of the CobraNet protocol in the CAB 8i?

The CobraNet protocol transmits up to 8 digital audio channels in real-time over an Ethernet 100BaseT network without lossy compression or degradation. It makes audio transport deterministic and reliable.

How to configure the 48 V phantom power on the inputs?

48 V phantom power can be activated or deactivated via software for each input channel individually. Use the MediaMatrix software to toggle the 'Phantom Power' option on each channel.

What gain levels are available for the inputs?

The analog gain is adjustable via software from -9 dB to +60 dB in 1 dB steps. A 20 dB attenuator is available for line mode switching. Digital gain is also adjustable.

How to use the control voltage (CV) inputs?

The 8 CV inputs accept 0-10 V DC. You can connect potentiometers, switches, or external voltage sources. Internal 10 V is available to power potentiometers.

What do the LEDs on the front panel mean?

The LEDs indicate: signal transmission/reception, transmission/reception error, fault, Ethernet link, conductor status, RS-485, and power presence. The 8 dBu-scaled level meters show analog level with a red clip LED.

How to connect word clock for redundancy?

Use the two front/rear BNC connectors to daisy-chain two CAB 8i units. If the first module fails, the second automatically takes over. Wiring is done in daisy-chain.

What are the minimum loads for the relay outputs?

The relays support up to 120 V AC/DC and 2 A maximum. They have normally open and normally closed contacts. Use them to control external devices (projectors, screens, etc.).

Can I use the CAB 8i for microphone and line signals simultaneously?

Yes, each channel can be individually configured as mic or line via software. The 20 dB attenuation applies in line mode. Note the impedance: mic 2.2 kΩ, line 22.2 kΩ.

How to rack mount the CAB 8i?

The device occupies 1U (44.5 mm) in a 19-inch rack. Attach the provided rack ears. Ensure adequate ventilation as cooling is active via fan.

Where to find drivers and software for the CAB 8i?

The CAB 8i is a CobraNet device. The MediaMatrix (NWare) control software is required to configure parameters. Download it from the Peavey website or from your dealer.

USER MANUAL MEDIAMATRIX CAB 8I PEAVEY

Exterior view of a beige audio acquisition unit (PEIMX) with multiple drive modules and control knobs (no readable text beyond branding)

MediaMatrix® CAB™ 8i and CAB™ 8o

Description

The CAB ^™ 8i and CAB ^™ 8o, respectively, are eight-input and eight-output MediaMatrix ^® gateways onto and off of an Ethernet network for real-time MediaMatrix ^® audio distribution and control. They employ Cobranet proprietary protocol to ensure seamless, error-free transmission of high-quality real-time audio without drop-outs or lossy compression across a 100baseT Ethernet network.

The CAB ^™ 8i uploads eight channels of either microphone-level or line-level analog audio signals onto an Ethernet network. Each input channel has software controlled, continuously variable analog input gain from -9 dB to +60 dB in 1 dB steps. Each has 48-volt phantom power and a 20 dB mic/line pad. Both functions are software switchable.

The CAB 80 downloads eight channels of line-level analog audio signals from an Ethernet network. Maximum output levels are individually jumper-selectable between +24 dBu, +18 dBu, +12 dBu, and +6 dBu.

In addition to eight input or output audio paths, both products incorporate eight voltage-control input ports, eight software controlled TTL outputs port, eight software controlled relays with both normally open and normally closed contacts, an RS-485 port with multi-drop connections, and two word-clock linking BNC connectors.

Features

- Eight channels of either microphone or line-level audio transmitted onto an Ethernet network using CobraNet™ protocol sampled at 48 kHz (CAB 8i).

- Eight channels of line-level audio transmitted from an Ethernet network using CobraNet protocol sampled at 48 kHz (CAB 8o).

- A/D converters are 24-bit, 64 times oversampling, using delta-sigma modulation (CAB 8i).

• D/A converters are 24-bit, 128 times oversampling, using delta-sigma modulation (CAB 8o).

- 48-volt phantom power for microphone inputs, individually software switchable on each input channel (CAB 8i).

- 24- or 20-bit transmission quantization at a 48 kHz sampling rate.

- Eight channels of analog control voltage input ports which allow external switches, potentiometers, or voltage sources to control MediaMatrix software parameters via an Ethernet link.

- Eight channels of TTL control outputs ports which are software controllable via an Ethernet link.

- Eight relays, with both normally open and normally closed contacts, which allow software control of external devices via an Ethernet link.

- A non-Ethernet RS-485 control port with two multit-drop connections.

• Two word clock linking connectors that enable auto-switch-over to a second unit, should one unit fail.
• One rack-unit (1-3/4"), fan-cooled chassis.

Applications

• Stadiums
• Cruise ships
  • Multi-purpose facilities
• Auditoriums
  • Large-scale paging systems
• Schools
• Courts of law
  • University campus buildings
• Theme parks
  • Performing arts centers
• Distance learning
  • Hotel meeting rooms
• Houses of worship
• Conference centers
• Teleconferencing
  • Live sound microphone snakes
• Civic centers
• Music clubs
• Theaters
• Arenas
• Any facility requiring distribution of multiple microphone or line-level signals

AUDIO SPECIFICATIONS

Audio Channels:

CAB 8i: Eight input channels, line-level or microphone level with switchable 48-volt phantom power.

CAB 8o: Eight output channels, line-level with individual channel jumpers for a maximum output of +6, +12, +18, or +24 dBu (factory default is +12 dBu for unity I/O gain).

Note: See Digital specifications, Audio Channels per CAB 8i/8o for number of channels limitations.

Frequency Response:

20 Hz – 20 kHz, +0/-0.5 dB, with a +4 dBu input signal, unity gain in and out.*

Total Harmonic Distortion:

0.01% @ 1 kHz, 0.02% @ 20 kHz, with a +4 dBu input signal, unity gain in and out*

Note: Measurements made using a 10 Hz to 30 kHz input filter on Audio Precision System One for testing.

Dynamic Range:

Mic Level:

-123 dBu equivalent input noise with a 150 Ohm, -48 dBu input signal, no input pad, analog input gain at 60 dB, digital gain at 0 dB, analog output set for +12 dBu maximum (factory pre-set jumper for unity gain through-put)

Note: This is equivalent to 78 dBA, 75 dB unweighted.

Line level:

95 dBA, 93 dB unweighted, with a +12 dBu input signal, unity gain in and out*

Input CMRR (CAB 8i):

Better Than 65 dB at Any Gain Setting:

73 dB with +12 dBu input and unity gain in and out*, 69 dB with a +4 dBu input signal and unity gain in and out*, 68 dB with a -56 dBu input signal, no input pad, analog input gain at 60 dB, digital gain at 0 dB, analog output set for +12 dBu maximum (factory pre-set jumper for unity gain through-put).

Maximum Input Level (CAB 8i):

+29 dBu, with a 20 dB pad in and the analog input gain at 0 dB, +38 dBu with a 20 dB pad in and the analog input gain at -9 dB.

Note: The analog input gain control is not buffered with an electronically balanced amplifier and maintains a balanced input circuit with 1-dB-per-step precision and specified CMRR.

Maximum Output Level (CAB 8o):

+24 dBu @ 600 ohms

CAB 8i Gain:

Software controlled analog gain from -9d B to +60 dB, adjustable in 1 dB increments, with a software selectable analog Mic/Line input switch. (Line level selection inserts a 20 dB input pad.)

CAB 8o Gain:

Software controlled analog output gain from -95.5 dB to +31.5 dB, adjustable in 0.5 dB increments with internal analog output jumpers for maximum output levels of +6, +12, +18, or +24 dBu

Note: It is not recommended to use this as a microphone level output as noise will be a problem at extremely low output levels.

Input Impedance (CAB 8i):

22.2 k ohms for Line input selection and 2.2 k ohms for Mic input selection

Output Impedance (CAB 8o):

100 Ohms, designed to drive a minimum load of 600 Ohms

Analog LED Metering:

Eight peak-reading headroom meters, calibrated in dBu, monitor the analog level present at the input to the A/D converters for the CAB 8i, and at the output of the D/A converters for the CAB 8o, with the top-most red LED indicating A/D or D/A clipping.

Note: The top-most red LED should never illuminate during normal operation.

Note 1: Audio specifications are measured from the input into the CAB 8i and the output out of the CAB 8o where relevant.

Note 2: All specifications are typical.

*Indicates no input pad, analog input gain at 0 dB, digital gain at 0 dB, analog output set for +12 dBu maximum (factory pre-set jumper for unity gain through-put).

DIGITAL SPECIFICATIONS

A/D and D/A quantization:

24-bit resolution

Audio Transmission Quantization via CobraNet™:

Software switchable, 24 or 20-bit resolution

Digital Processing:

24-bit DSP's, 56-bit accumulators

Audio Sampling Rate and Clock Speeds:

48 kHz audio sampling, 80 MHz DSP's, 12.288 MHz master clock

Audio Channels Per CAB 8i/8o:

• Eight with 20-bit transmission quantization selected
• Seven with 24-bit transmission quantization selected

CONTROL SPECIFICATIONS

CobraNet™ I/O:

100BaseT Ethernet via a standard eight-conductor RJ-45 jack

RS-485:

One port with two 3-cond. half duplex, multi-drop connections

Control Ports:

Control voltage in:

0 VDC to +10 VDC, external-potentiometer or external-voltage-source controlled (internal 10 VDC supply provided)

Software controlled TTL (Transistor-to-Transistor Logic) out:

0 VDC or +5 VDC, with a maximum current of 28 mA distributed to 8 outputs

Eight Software Controlled Relays With Both NO and NC Contact:

Maximum contact voltage:

120 VAC or DC

Maximum contact current:

2 A

Word-Clock Ports:

Two BNC I/O ports

Note: Can be used for redundancy back-up that automatically switches from one CAB 8 to another if the first should fail.

GENERAL SPECIFICATIONS

Dimensions:

CAB 8i CAB 8o:

1.730" H x 19" W x 11.698" D

(4.39 cm H x 48.26 cm W x 29.71 cm D)

Net Weight:

CAB 8i: 8.5 lbs. (3.86 kg)

CAB 80: 8.4 lbs. (3.81 kg)

AC Power:

Universal Power Supply:

1.4 A maximum, 100 to 240 VAC, 47 to 63 Hz

Power Consumption and Heat Generation:

CAB 8i: 25 W, 85 BTU/Hr

CAB 8o: 20 W, 68 BTU/Hr

Maximum In-Rush Current:

CAB 8i and CAB 8o: less than 1.4 Amps

Finish:

Grey powder-coat painted steel

Accessories:

One detachable AC cord, four rubber adhesive feet

Product Agency Compliance Listings:

UL, CUL, CE and FCC part 15, A

Frequency Response

T.H.D. versus Frequency

Functional Block Diagram

graph TD
    A["Main Circuit Board"] --> B["Clock"]
    A --> C["CPU"]
    A --> D["Buffer"]
    A --> E["Memory"]
    A --> F["External HS-403 Control"]
    A --> G["AC Power Input"]
    H["Control Outputs"] --> I["Balge: 80-48C"]
    J["Control Inputs"] --> K["Voltage Control Inputs"]
    L["Logic Outputs"] --> M["TTL Outputs"]
    N["External Out"] --> O["Audio Out"]
    P["External In"] --> Q["Audio In"]
    R["BU"] --> S["BU"]
    T["BU"] --> U["BU"]
    V["BU"] --> W["BU"]
    X["BU"] --> Y["BU"]
    Z["BU"] --> AA["BU"]
    AB["BU"] --> AC["BU"]
    AD["BU"] --> AE["BU"]
    AF["BU"] --> AG["BU"]
    AH["BU"] --> AI["BU"]
    AJ["BU"] --> AK["BU"]
    AL["BU"] --> AM["BU"]
    AN["BU"] --> AO["BU"]
    AP["BU"] --> AQ["BU"]
    AR["BU"] --> AS["BU"]
    AT["BU"] --> AU["BU"]
    AV["BU"] --> AW["BU"]
    AX["BU"] --> AY["BU"]
    AZ["BU"] --> BA["BU"]
    BB["BU"] --> BC["BU"]
    BD["BU"] --> BE["BU"]
    BF["BU"] --> BG["BU"]
    BH["BU"] --> BI["BU"]
    BJ["BU"] --> BK["BU"]
    BL["BU"] --> BM["BU"]
    BN["BU"] --> BO["BU"]
    BP["BU"] --> BQ["BU"]
    BR["BU"] --> BS["BU"]
    BT["BU"] --> BU["BU"]
    BV["BU"] --> BW["BU"]
    BX["BU"] --> BY["BU"]
    BZ["BU"] --> CA["BU"]
    CB["BU"] --> DA["BU"]
    DB["BU"] --> DB
    DC["BU"] --> DB
    DB --> DB
    DB --> DB
    DB --> DB
    DB --> DB
    DB --> DB
    DB --> DB
    DB --> DB
    DB --> DB
    DB --> DB
    DB --> DB
    DB --> DB
    DB --> DB
    DB --> DB
    DB --> DB
    DB --> DB
    DB --> DB

Mechanical Diagram

19.0" 482.6mm

1.730" 43.942mm

1.730" 43.942mm

ARCHITECTS' AND ENGINEERS' SPECIFICATIONS

Audio specifications are measured with the input fed into the CAB 8i, digitally transmitted through an Ethernet hub, and the output fed out of the CAB 8o where relevant.

CAB 8i:

The Peavey CAB 8i shall provide eight channels of either microphone or line-level audio transmitted onto an Ethernet network. It shall provide full-bandwidth, high-quality audio transmission via 100BaseT (fast) Ethernet without lossy compression techniques, drop-outs or signal degradation by employing CobraNet audio transmission protocol to make Ethernet signal distribution deterministic. It shall employ 24-bit A/D converters with 20- or 24-bit selectable transmission quantization utilizing a 48 kHz sampling rate.

It shall have a frequency response from 20 Hz to 20 kHz, +0/-0.5 dB or better. Its total harmonic distortion shall be no more than 0.01% at 1 kHz and 0.02% at 20 kHz with a +4 dBu input signal. It shall have a dynamic range of 95 dBA and 93 dB unweighted for line-level signals, and an equivalent input noise level of -124 dB for microphone level signals. Input-common-mode-rejection ratio (CMRR) shall be greater than 65 dB at any gain setting. Maximum input level without clipping shall be +38 dBu while maintaining specified CMRR. CAB 8i input gain shall be from -9 dB to +60 dB in 1-dB steps. The CAB 8i input impedance shall be 2.2 k ohms at microphone level (20 dB pad out), and 22.2 k ohms at line level (20 dB pad in).

Control features shall include eight relays with both normally open and normally closed contacts, and eight channels of TTL control outputs, both of which are software controllable via an Ethernet link. Also included are eight channels of analog voltage-control ports that allow external switches, potentiometers or voltage sources to control MediaMatrix software parameters via an Ethernet link.

Front-panel indicators shall display the following status conditions: signal transmission, signal reception, transmission error, reception error, fault indication, link indication, conductor status, RS-485 control indication, and power presence. It shall have eight peak-reading headroom meters to monitor the analog level present at the input to the A/D converters, with the top-most red LED indicating A/D clipping.

Rear panel features shall include a detectable AC power cord, an AC power switch, and an AC power receptacle with a built-in auto-resetting circuit breaker. External or internal fuses shall not be acceptable. It shall have two word-clock connectors to enable auto-switch-over should a unit fail. It shall employ detachable, euro-style, bare-wire capturing, screw-terminal connectors for ease of hook-up and trouble-shooting. These connectors shall be used for all line-level, microphone-level, control-voltage, TTL, relay, and RS-485 connections. The unit shall use a standard eight-conductor RJ-45 I/O jack for Ethernet connection.

Its dimensions shall be 19 inches (48.26 cm) wide, 12 7/8 inches (32.70 cm), and 1 3/4 inches (4.44 cm) high without feet. Its net weight shall be 8.5 pounds (3.86 kg.), and its 1 rack-unit (1 3/4"), fan-cooled, steel chassis, shall be finished in grey powder coat.

It shall consume no more than 25 Watts of power and draw no more than 1.4 Amps of current. It shall be supplied with a detachable AC cable and four rubber feet. It shall be UL, CUL, CE listed and comply with FCC part 15, A. The unit shall be Peavey Electronics Corporation model CAB 8i.

CAB 80:

The Peavey CAB 80 shall provide eight channels of line-level audio transmitted from an Ethernet network. It shall provide full-bandwidth, high-quality audio transmission via 100BaseT (fast) Ethernet without lossy compression techniques, drop-outs or signal degradation by employing CobraNet audio transmission protocol to make Ethernet deterministic. It shall employ 24-bit A/D converters with 20- or 24-bit selectable transmission quantization utilizing a 48 kHz sampling rate.

It shall have a frequency response from 20 Hz to 20 kHz, +0/-0.5 dB or better. Its total harmonic distortion shall be no more than 0.01% at 1 kHz and 0.02% at 20 kHz with a +4 dBu output signal. It shall have a dynamic range of 95 dBA and 93 dB unweighted. Maximum output level shall be +24 dBu with a load of 600 ohms or greater. CAB 80 gain shall be from -95.5 dB to +31.5 dB in 0.5 dB steps. The output impedance of the CAB 8o shall be 100 ohms and designed to drive a load of 600 ohms or greater.

Control features shall include eight relays with both normally open and normally closed contacts, and eight channels of TTL control outputs, both of which are software controllable via an Ethernet link. Also included are eight channels of analog voltage-control ports that allow external switches potentiometers or voltage sources to control MediaMatrix software parameters via an Ethernet link.

Front-panel indicators shall display the following status conditions: signal transmission, signal reception, transmission error, reception error, fault indication, link indication, conductor status, RS-485 control indication, and power presence. It shall have eight peak-reading headroom meters to monitor the analog level present at the output of the D/A converters, with the top-most red LED indicating D/A clipping.

Rear panel features shall include a detachable AC power cord, an AC power switch, and an AC power receptacle with a built-in auto-resetting circuit breaker. External or internal fuses shall not be acceptable. It shall have two word-clock connectors to enable auto-switch-over should a unit fail. It shall employ detachable, euro-style, bare-wire capturing, screw-terminal connectors for ease of hook-up and trouble-shooting. These connectors shall be used for all line-level, control-voltage, TTL, relay, and RS-485 connections. The unit shall use a standard eight-conductor RJ-45 I/O jack for Ethernet connection.

Its dimensions shall be 19 inches (48.26 cm) wide, 12 7/8 inches (32.70 cm), and 1 3/4 inches (4.44 cm) high without feet. Its net weight shall be 8.4 pounds (3.81 kg.), and its 1 rack-unit (1 3/4"), fan-cooled, steel chassis, shall be finished in grey powder coat.

It shall consume no more than 20 Watts of power and draw no more than 1.4 Amps of current. It shall be supplied with a detachable AC cable and four rubber feet. It shall be UL, CUL, CE listed and comply with FCC part 15, A. The unit shall be Peavey Electronics Corp. model CAB 8o.

CAB 8i Front

1 +12 0 [phone] LEVEL (dB) LEVEL (dB) LEVEL (dB) LEVEL (dB) LEVEL (dB) LEVEL (dB) LEVEL (dB) 2 +12 0 [phone] LEVEL (dB) LEVEL (dB) LEVEL (dB) LEVEL (dB) LEVEL (dB) 3 +12 0 [phone] LEVEL (dB) LEVEL (dB) LEVEL (dB) LEVEL (dB) 4 +12 0 [phone] LEVEL (dB) LEVEL (dB) LEVEL (dB) LEVEL (dB) 5 +12 0 [phone] LEVEL (dB) LEVEL (dB) LEVEL (dB) LEVEL (dB) 6 +12 0 [phone] LEVEL (dB) LEVEL (dB) LEVEL (dB) LEVEL (dB) 7 +12 0 [phone] LEVEL (dB) LEVEL (dB) LEVEL (dB) LEVEL (dB) 8 +12 0 [phone] LEVEL (dB) LEVEL (dB) LEVEL (dB) LEVEL (dB) BANK CN ADDRESS CAB™ 8i - AUDIO INPUT BRIDGE TX RX TX ERROR RX ERROR FAULT LINK CONDUCT RS485 POWER PEAVEY® ARCHITECTURAL ACOUSTICS®

CAB 8i Rear

THIS UNIT COMPLIES WITH THE LIMITS FOR A CLASS B COMPUTING DEVICE PURSUANT TO SUBPART J OF FCC RULES. POWER IN -LINK- OUT CobraNet™ I/O RELAY PORT 1 2 3 4 + - CV IN PS 485 A DIVISION OF PEAVEY ELEC CORP. TRS OUT CM NC NO 5 CM NC NO 6 CM NC NO 7 CM NC NO 8 + - THRU 1 + | + | + | + | + | + | + | + | + | + | + | 1 IN 1 IN 3 IN 5 IN 7 120 VAC 60 Hz 50 WATTS OFF ARCHITECTURAL ACQUSTICS® MOUNT IN RACK ONLY-INSTALLER SUR SUPPORT DE MONTAGE SEULEMENT MERIDIAN, MS MADE IN U.S.A.

CAB 8o Front

1 +12 2 +12 3 +12 4 +12 5 +12 6 +12 7 +12 8 [phone] -6 -6 -6 -6 -6 -12 -12 -12 LEVEL (dB) LEVEL (dB) LEVEL (dB) LEVEL (dB) LEVEL (dB) LEVEL (dB) LEVEL (dB) BANK CN ADDRESS CAB™ 8o- AUDIO INPUT BRIDGE TX RX TX ERROR RX ERROR FAULT LINK CONDUCT RS485 POWER PEAVEY® ARCHITECTURAL ACOUSTICS®

CAB 8o Rear

THIS UNIT COMPLIES WITH THE LIMITS FOR A CLASS B COMPUTING DEVICE PURSUANT TO SUBPART J OF FCC RULES. POWER IN OUT -LINK- CobraNet™ I/O 120 VAC 60 Hz 50 WATTS OFF MOUNT IN RACK ONLY-INSTALLER SUR SUPPORT DE MONTAGE SEULEMENT MERIDIAN, MS MADE IN U.S.A. RELAY PORT CM NC NO 5 CM NC NO 6 CM NC NO 7 CM NC NO 8 + - THRU PS 485 CV IN TTL OUT OUT 1 OUT 3 OUT 5 OUT 7 O 1 O 2 O 3 O 4 O 5 O 6 O 7 O 8 OUT 2 OUT 4 OUT 6 OUT 8 + SH + SH + SH + SH

ESPAÑOL

Descripción

Distorsion harmonique total:

NOTE: For details, refer to the warranty statement. Copies of this statement may be obtained by contacting

Peavey Electronics Corporation

P.O. Box 2898, Meridian, Mississippi 39301-2898.

PEAVEY®

ARCHITECTURAL ACOUSTICS®

Features and specifications subject to change without notice.

Peavey Electronics Corporation • 711 A Street • Meridian • MS • 39301

[phone] • FAX [phone] • aa.peavey.com