SPA4100 - Receiver QSC - Free user manual and instructions

Product Type	Professional audio power amplifier (receiver)
Brand	QSC
Model	SPA4100
Number of Channels	4 channels
Output Power (Stereo 8 Ω)	100 W per channel
Output Power (Stereo 4 Ω)	100 W per channel
Bridge Mode Power (8 Ω or 4 Ω)	200 W per pair
Bridge Mode Power 70 V / 100 V	350 W per pair
Frequency Response	20 Hz - 20 kHz ±0.1 dB
Signal-to-Noise Ratio	>100 dB (20 Hz - 20 kHz)
Output Circuit	Class D
Built-in Protections	Limiter, thermal protection, short circuit, automatic MUTE
Operating Modes	Stereo, Bridge 4 Ω/8 Ω, Bridge 70 V/100 V (with 80 Hz high-pass filter)
Input Connectors	Euroblock 3.5 mm 10-pin (green)
Output Connectors	2 × Euroblock 5 mm 4-pin (green)
Remote Control Connectors	Euroblock 3.5 mm 10-pin (black) for volume and standby
Power Supply	100-240 V~, 50-60 Hz, with active power factor correction
Dimensions (H × W × D)	43 mm × 220 mm × 241 mm (1U)
Net Weight	1.8 kg
Gross Weight	3.0 kg
Cooling	Natural convection
Operating Temperature	0 °C to 40 °C
Certifications	UL, CE, Energy Star, FCC Class B, RoHS/WEEE, UL 2043 with plenum kit
Box Contents	Amplifier, power cord, connectors, 19" rack ears, quick start guide, safety documentation
Warranty	Refer to document TD-000453 provided

Frequently Asked Questions - SPA4100 QSC

What are the operating modes of the SPA4100 amplifier?

The SPA4100 can be configured in stereo mode (4 Ω or 8 Ω), bridge mode (4 Ω or 8 Ω), or high-impedance bridge mode 70 V / 100 V. In 70 V and 100 V bridge modes, an 80 Hz high-pass filter is automatically activated.

How do I install the amplifier in a 19-inch rack?

Use the supplied mounting brackets (ref. CH-001344-00) and M4 screws. Leave 1U (44 mm) space above the amplifier and at least 152 mm behind for ventilation. You can mount one or two amplifiers side by side.

What do the front panel indicators mean?

The blue POWER LED indicates power on. Blue SIGNAL indicates signal presence. Orange LIMITER/PROTECT indicates the limiter is active, red indicates protection or MUTE. If no signal for 10 minutes, the amplifier enters MUTE (red), then standby after 25 minutes.

Can I connect 70 V or 100 V speakers?

Yes, in bridge 70 V or 100 V mode, the amplifier can power distributed audio systems. The 80 Hz high-pass filter is automatically engaged to protect transformers.

What is the maximum power in bridge mode?

In bridge 4 Ω or 8 Ω mode, power is 200 W per channel pair. In 70 V or 100 V mode, power reaches 350 W per pair.

How to use the remote control function?

Connect a 10 kΩ potentiometer (not supplied) to the REMOTE connector. The 0 to 10 V voltage controls volume (0 V = MUTE, 10 V = max). The STANDBY switch allows remote standby.

What if the LIMITER/PROTECT LED turns red?

This indicates active protection (thermal overload, short circuit, or MUTE). Check ventilation, speaker connections, and reduce volume. If persistent, turn off power for a few minutes to reset.

Does the amplifier support plenum installation?

Yes, provided you use the optional plenum kit (FG-000995-00) sold separately. It allows installation complying with UL 2043.

How to clean the amplifier?

Disconnect the unit before cleaning. Use a soft, dry cloth. Never use liquids, solvents, or abrasives. Avoid dust accumulation in ventilation grilles.

Where to find spare parts or accessories?

Spare parts (connectors, mounting brackets, plenum kit) are referenced in the manual. Contact QSC customer service or an authorized dealer. Warranty is provided with the product (document TD-000453).

USER MANUAL SPA4100 QSC

System Power Amplifier (SPA)

Installation Guide

SPA2-60 Amplifier SPA4-60 Amplifier

SPA2-200 Amplifier SPA4-100 Amplifier

EXPLANATION OF SYMBOLS

The term "WARNING!" indicates instructions regarding personal safety. If the instructions are not followed the result may be bodily injury or death.

The term "CAUTION!" indicates instructions regarding possible damage to physical equipment. If these instructions are not followed, it may result in damage to the equipment that may not be covered under the warranty.

The term "IMPORTANT!" indicates instructions or information that are vital to the successful completion of the procedure.

The term "NOTE" is used to indicate additional useful information.

The intent of the lightning flash with arrowhead symbol in a triangle is to alert the user to the presence of un-insulated "dangerous" voltage within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to humans.

The intent of the exclamation point within an equilateral triangle is to alert the user to the presence of important safety, and operating and maintenance instructions in this manual.

What's in the Box

	(1x)	(1x)	(2x)	(2x)
SPA2-60SPA2-200SPA4-60SPA4-100		AC Power Cord,US	Rack EarQSC P/NCH-001344-00	Joining PlateQSC P/NCH-001345-00
(2x)		(6x)	(6x)	(4x)
Rack-Ear SpacerQSC P/NCH-001386-00	[2DXA]	Phillips Pan HeadM4 x 7 mm[3DX2]	Phillips FlatheadM3 x 6 mm[208T]	Foam SpacerQSC P/NPL-001023-00[1H876]
(1x)		SPA 2-channel (1x)SPA 4-channel (2x)	SPA 2-channel (1x)	SPA 2-channel (1x)
Rack-Ear Cover LabelQSC P/NLB-001138-00		Euro Plug 3.5 mm,4 pos, grnQSC P/NCO-000646-00	Euro Plug 3.5 mm,5 pos, grnQSC P/NCO-000644-00	Euro Plug 3.5 mm,4 pos, blkQSC P/NCO-000645-00
SPA 4-channel (1x)		SPA 4-channel (1x)	(1x)	(1x)
Plug 3.5 mm,10 pos, grnQSC P/NCO-000647-00	[233G]	Plug 3.5 mm,10 pos, grnQSC P/NCO-000648-00	WarrantyTD-000453	Safety InformationTD-000337

Installation

Ventilation

• Recommend 1RU (1.75 in / 44.45 mm) space above the amplifier.
  • Minimum open space of 6 inches measured from back of amplifier.

NOTE: QSC System Power Amplifiers contain advanced protection circuitry which allows them to reduce output power in order to maintain safe operating temperatures. Insufficient ventilation may result in the amplifier reducing output power during normal operation (indicated by Limiter/Protect LEDs illuminating red). To reduce the possibility of thermal limiting, and allow proper heat dissipation, we recommend that you keep the space directly above and to the rear of these amplifiers free of obstacles.

• Figure 1 -

Select the Amplifier Installation Configuration

Choose one of the following configuration options:

A. One Amplifier 19-inch Rack (Left or Right Mount) on page 3 D. Under Table or on Wall on page 4
B. Two Amplifiers 19-inch Rack (Front or Rear Facing Out) on page 3 E. Free-Standing on Desk/Table on page 5
C. One Amplifier Half Rack (Front or Rear Facing Out) on page 4 F. Plenum Installation on page 5

A. One Amplifier 19-inch Rack (Left or Right Mount)

Figure 2

B. Two Amplifiers 19-inch Rack (Front or Rear Facing Out)

Figure 3

• Figure 3 -

C. One Amplifier Half Rack (Front or Rear Facing Out)

Figure 4

• Figure 4 -

D. Under Table or on Wall

Figure 5.

1. (6)
2. (4) Not supplied – use appropriate screws for mounting surface.
3. Mounting Surface

• Figure 5 -

E. Free-Standing on Desk/Table

Figure 6
1. (1)

1. (4)
   

• Figure 6 -

F. Plenum Installation

Configure amplifier per option D Under Table or on Wall.

Figure 7
1. (1)

1. (1)
   

Plenum Kit - Suitable for Air Handling Spaces only when used with optional Plenum Kit (FG-000995-00) sold separately.

• Figure 7 -

Rack-Mounting Options

All Configurations

Figure 8

Using the examples shown, you can mount any of the amplifier configurations. The example at the lower right of Figure 8 can be flipped to accommodate a single amplifier on the left side.

1. Equipment Rack (not supplied)

2. (2)
   

Optional – to bring flush with Q-Sys Core 110

1. (2)
   

2. (4) Rack-Mounting Screws and Washers (not supplied)

• Figure 8 -

Front Panel

2 CHANNEL AMPLIFIER SPA2

4 CHANNEL AMPLIFIER SPA4

• Figure 9 -

Rear Panel

• Figure 10 -

• Output Channels 1 & 2

• Remote Control Channels 1 & 2
• Input Channels 1 & 2

• Channel 1 thru Channel 4 Status LEDs
  a. Green - Normal Signal Level
  b. Amber - Input or Output Overload/Clipping or Thermal Limiting
  c. Red - Limit or Protect Mode
  d. Red - Thermal Limit or Protect Mode
  e. Red - Mute

• Channel 1 Attenuator Control

• Channel 2 Attenuator Control
• Mode Configuration Switches Channel 1&2
• AC Power Connection

• Output Channels 3 & 4

• Remote Control Channel 3 & 4

• Input Channels 3 & 4
• Mode Configuration Switches Channel 3 & 4
• Channel 3 Attenuator Control
• Channel 4 Attenuator Control

Connections

Wire

IMPORTANT: Class 2 Wiring

Strip Length = 5mm

DO NOT TIN!

- Figure 11 -

Output Connectors

IMPORTANT: Class 2 Wiring

Figure 12 - Figure 13
SPA 2-channel
(1)

SPA 4-channel
(2)

- Figure 12 -

• Figure 13 -

Input Connectors

SPA 2-channel Connector

Figure 14 - Figure 15

(1)

SPA 4-channel Connector

Figure 16 - Figure 17

(1)

Technical diagram of a screwdriver connector with pin layout and wiring (no text or symbols)

• Figure 14 -

Diagram of a screwdriver inserted into an electrical connector with three red indicator lights (no text or symbols)

• Figure 16 -

• Figure 15 -

• Figure 17 -

Balanced and Unbalanced Inputs
Figure 18

• Figure 18 -
  Unbalanced Inputs: jumper between (-) negative and ground.

Stereo Mode
Figure 19 – Figure 21

• Figure 19 -

• Figure 20 -
  

• Figure 21 -

CAUTION!: Do not connect any output to ground.

4 or 8-ohm Bridged Mode

Figure 22 - Figure 25

• Figure 22 -

Inputs

• Figure 23 -
  Outputs
  

• Figure 24 -

CAUTION!: Do not connect any output to ground.

IMPORTANT: When using 4 or 8-ohm Bridged Mode, use both signal inputs of a channel pair (for example parallel CH1&2 inputs and parallel CH3&4 inputs), and set the attenuation for each channel pair to the same level.

NOTE: 80 Hz (high-pass filter) is auto-engaged in bridged 70 V and 100 V modes
Figure 26 - Figure 29

• Figure 26 -

Minimum Load Impedance:

• 70V Bridged = 16 Ω
• 100V Bridged = 26 Ω

• Figure 27 -

• Figure 29 -

Remote

Figure 30 - Figure 32
SPA 2-channel
(1)

3.5mm, 5-pin

SPA 4-channel
(1)

3.5mm, 10-pin

When the potentiometer is at the minimum position, the amplifier goes into Mute mode. On the SPA 4-channel amplifier, the remote level controls for channel 1 & 2 are independent from channels 3 & 4 remote level control.

On the SPA 4-channel model, closing the "Standby Switch" between the first two pins of either Ch1-Ch2 or Ch3-Ch4 causes all four channels to go into Standby.

CH 1&2

• Figure 30 -
  V = +10Vdc reference output
  C = 0-10Vdc control input C @ 10V = Max Volume C @ 0V = Mute

Technical diagram of a screwdriver inserted into an electrical connector housing (no text or symbols visible)

• Figure 31 -

• Figure 32 -

Specifications

	SPA2-602 Channels	SPA4-604 Channels	SPA2-2002 Channels	SPA4-1004 Channels
Stereo Mode (all channels driven)
8 Ω 60 W 60 W 200 W 100 W
4 Ω 60 W 60 W 200 W 100 W
Bridged Outputs (per bridged output pair)
8 Ω and 4 Ω 200 W 200 W 400 W 200 W
70 V 250 W 250 W		;	350 W 350 W	;
100 V 250 W 250 W		;	350 W 350 W	;
Frequency Response (4 Ω and 8 Ω) 20 Hz - 20 kHz +/- 0.1 dB
Signal to Noise (20 Hz - 20 kHz) >100 dB
Input Sensitivity 1.23 V (+4 dBu)
Gain at 8 Ω 25 dB 25 dB 30 dB 27 dB
Output Circuitry Class D
Input Impedance >10k, balanced or unbalanced
Maximum Input Level 12.3 V (+24 dBu)
Cooling	Convection
Input Connectors
SPA 2-channel	3.5 mm Euro, 5 pin (green)
SPA 4-channel	3.5 mm Euro, 10 pin (green)
Remote Connectors
SPA 2-channel	3.5 mm Euro, 5 pin (black)
SPA 4-channel	3.5 mm Euro, 10 pin (black)
Output Connectors
SPA 2-channel	One 5 mm Euro, 4 pin (green)
SPA 4-channel	Two 5 mm Euro, 4 pin (green)
Front Panel Indicators Power, Signal (per channel), Limit/Mute/Protect (per channel)
Rear Panel Indicators	Two-colored LED Signal/Limit/Mute/Protect (per channel)
User-configurable Operating Modes(4-channel or equivalent operating mode can be independently configured per channel pair	Low Impedance 4 Ω and 8 Ω operation, orHigh-impedance bridged direct drive of 70V & 100V distributed audio systems
General Purpose Inputs (GPI)	Remote Volume, Remote Standby, on 3.5 mm connectors (10k potentiometer is not included)
Highpass Filter	80 Hz auto-engaged in Bridged 70 V & 100 V modes
Dimensions 1.7" x 8.7" x 9.5" (43 mm x 220 mm x 241 mm)
Net Weight	3.5 lb (1.6 kg)	4.0 lb (1.8 kg)	3.5 lb (1.6 kg)	4.0 lb (1.8 kg)
Shipping Weight	6 lb (2.7 kg)	6.5 lb (3.0 kg)	6 lb (2.7 kg)	6.5 lb (3.0 kg)
Power Requirements	Universal Power Supply (with active power factor correction), 100 - 240 VAC, 50 - 60 Hz
Agency Approvals	UL, CE, Energy Star, RoHS/WEEE compliant, FCC Class B (Conducted and Radiated emissions), UL 2043 with PL-KIT
Carton Contents	IEC Cable, Installation Guide, Connector Pack, Rack Mount Ears, Mounting Brackets

1 Peak Power – dependent on channel loading

QSC™

Mailing Address:

QSC, LLC

1675 MacArthur Boulevard

Costa Mesa, CA 92626-1468 USA

Telephone Numbers:

Main Number: [phone]

Sales & Marketing: [phone] or toll free (USA only) [phone]

Customer Service: [phone] or toll free (USA only) [phone]

Facsimile Numbers:

Sales & Marketing FAX: [phone]

Customer Service FAX: [phone]

World Wide Web:

www.qsc.com

E-mail:

[e-mail]

[e-mail]

System Power Amplifier (SPA)

Guía de instalación

• Figura 1 -

Technical diagram of a screwdriver inserted into an electrical connector housing (no text or symbols visible)

• Figura 14 -

Technical diagram of a screwdriver inserted into an electrical connector housing (no text or symbols visible)

• Figura 16 -

• Figura 15 -

Technical line drawing of an electronic device rear panel with a green connector block attached (no visible text or symbols)

• Figura 17 -

Entradas balanceadas y no balanceadas
Figura 18

No balanceada

4 - 8 Ω Bridged Load

• Figura 25 -

Technical diagram of a screwdriver inserted into an electrical connector housing (no text or symbols visible)

• Figura 31 -

• Figura 32 -

Especificaciones

• Figure 1 -

• Figure 13 -

Figure 16 – Figure 17
(1)

Technical line drawing of a screwdriver connector with pin layout (no text or symbols)

• Figure 14 -

Technical diagram of a screwdriver inserted into an electrical terminal block with red indicator lights (no text or symbols)

• Figure 16 -

• Figure 15 -

Technical line drawing of an electronic device rear panel with a green connector base (no visible text or symbols)

• Figure 17 -

Figure 19 - Figure 21

• Figure 19 -

Entrées

• Figure 20 -

Sorties

• Figure 21 -

Figure 22 - Figure 25

Figure 26 - Figure 29

• Figure 26 -
  

• Figure 27 -

• Figure 28 -
  

• Figure 29 -

Impédance minimum:

• 70V Bridge = 16 Ω
• 100V Bridge = 26 Ω

Télécommande

Figure 30 - Figure 32
SPA 2-canaux
(1)

3,5 mm, 5 broches

SPA 4-canaux
(1)

3,5 mm, 10 broches

Technical diagram of a mechanical component with red and black vertical lines indicating internal structure (no text or symbols)

• Figure 31 -

• Figure 32 -

• Abbildung 1 -

DE

Technical diagram of a screwdriver inserted into an electrical connector housing (no text or symbols visible)

- Abbildung 14 -

Technical diagram of a screwdriver inserted into a terminal block with red indicator lights (no text or symbols)

- Abbildung 16 -

- Abbildung 15 -

Technical line drawing of an electronic device rear panel with labeled ports and a green connector block (no text or symbols present)

- Abbildung 17 -

• Abbildung 26 -

Technical diagram of a screwdriver inserted into an electrical terminal block with three vertical slots (no text or symbols)

- Abbildung 31 -

- Abbildung 32 -

Technische Daten

一图1一

请选择放大器安装配置

请选择以下其中一个配置方案：

一 图 8 一

前面板

一图9一

后面板

一图10一

Technical diagram of a screwdriver inserted into a connector housing (no text or symbols visible)

一图14一

Diagram of a screwdriver inserted into a base with red and black vertical bars indicating mounting points (no text or symbols present)

一 图 16 —

一图15一

一 图 17 —

平衡输入和非平衡输入

图 18

一图25一

70V / 100V 桥接模式

Diagram of a screwdriver inserted into a base with three vertical pins, no text or symbols present

一图31一

一图32一

规格

Technical diagram of a mechanical assembly with a screwdriver and connector housing (no text or symbols)

—Рис.14—

—Рис.15—

Diagram of a screwdriver inserted into a housing with three vertical pins (no text or symbols present)

—Рис.16—

Technical line drawing of an electronic device rear panel with internal components and a green connector block (no text or symbols visible)

—Рис.17—

—1—

التهوية

الصوت.

LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED LED

ال clkقية مطفة.

— 11—

Diagram of a screwdriver inserted into a terminal block with red and black vertical bars indicating pins (no text or symbols present)

الشكل —16—

الشكل —17—

Technical diagram of a mechanical assembly with a screwdriver and connector housing (no text or symbols)

الشكل —14—

الشكل —15—

موصلات الإخراج

: هام

$$ 3 1 - 2 1 \text { الشكل } $$

2 قنوات SPA

(1)

4 قتوات SPA

(2)

موصلات الإدخال

قُنوات 2 موصل SPA

$$ 5 1 - 4 1 \text { الشكل } $$

قُنوات 4 موصل SPA

$$ 7 1 - 6 1 \text { الشكل } $$

Diagram of a screwdriver inserted into a terminal block with three red vertical bars (no text or symbols)

الشكل—31—

CH 1&2

QSC Audio Products, LLC

1675 MacArthur Boulevard

Costa Mesa, CA 926261468 USA

أرقام الهETF:

[phone] : الرقمический