QSC CX1102

3400W, 2 Channel Power Amplifier

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CX 2-Channel Series

The CX 2-Channel Series is designed to meet the specialized needs of sound contractors. Eight models have been designed from the ground up, combining QSC's exclusive PowerLight® technology with specific features to meet the requirements of fixed installations. With high output power, versatile loading options, high thermal capacity and proven reliability, the CX Series is the ideal solution to any permanently installed sound system.

Advanced monitoring and control when used with a Q-Sys or BASIS system. Learn more The model line incorporates QSC's exclusive PowerLight technology. Three models, the CX302V, CX602V and CX1202V, provide direct 70 volt capability ranging from 250 watts to 1000 watts per channel for distributed audio systems. The CX302, CX502, CX702, CX902 and CX1102 offer low impedance capability and range in power from 325 watts to 1100 watts per channel at 4 ohms (20 Hz -20 kHz, 0.05% THD). The versatile CX902 and CX1102 have the ability to drive both 70 volt and low impedance loads for maximum flexibility.

The CX amplifiers are equipped with many contractor specific features including 1 dB detented gain controls for easily repeatable settings and a custom security cover for tamper-proof installations. Active inrush limiting eliminates AC inrush current, cutting the need for power sequencers.

CX amplifiers also include an HD15 Data Port connector to interface with Q-Sys and QSControl networked audio systems, for remote amplifier monitoring and control.

General Features:
  • 2 Channel Professional Power Amplifier
  • 8 models to meet your exact power requirements:
    • Three 70 volt direct models
    • Five low impedance models, the CX902 and CX1102 also directly drive 70 volt loads
  • Exclusive PowerLight switch-mode power supply technology for high performance and compact size
  • Custom integrated security cover for tamper proof installations
  • Variable speed fan for low noise
  • 1 dB detented gain controls for fast and accurate gain settings
  • Active inrush limiting eliminates AC inrush current, removing the need for expensive power sequencers
  • XLR and detachable Euro style input connectors
  • HD15 DataPort connector for Q-Sys and QSControl computer control and monitoring
  • Dip switch control for clip limiters, high pass filters, bridge mono and parallel operation
  • Selectable high pass filters protect speakers and prevent speaker transformer saturation withminimal effect on program material (33 Hz or 75 Hz on non-V models, 50 Hz or 75 Hz on V models)
  • Comprehensive front panel indicators including signal, clip, protect and QSC's exclusive bridge mono and parallel input LEDs
  • Barrier strip output connector
  • Comprehensive protection circuitry including DC, infrasonic, thermal overload and short circuit protection
  • Class H complementary bipolar output circuitry for high efficiency (CX702, CX902, CX1102 & CX1202V)
  • Optional external transformer accessory pack for isolated 70 and 100 -volt outputs (converts CX302 to 400 watts per channel isolated output)
  • Compact size - all models are only 2 rack units high and 14" deep for reduced rack cost and floor space
  • Light weight - all models weigh only 21 pounds (9.5 kg) for easier racking and shipping
  • All CX Series amplifiers meet the European Union's, 2006 RoHS directive to restrict the use of hazardous materials used in electronic devices
  • 3-year Manufacturer's warranty
SPECIFICATIONS CX302 CX502 CX702 CX902 CX1102 CX302V CX602V CX1202V
  STEREO MODE, Both Channels Driven
8 ohms, 20 Hz-20 kHz, 0.05% THD 200 W 300 W 425 W 550 W 700 W - 550 W 700 W
4 ohms, 20 Hz-20 kHz, 0.05% THD 325 W 500 W 700 W 900 W 1100 W - - 1100 W
2 ohms, 1 kHz, 1% THD 600 W 800 W 1200 W 1500 W 1700 W - - -
70V, 20 Hz-20 kHz, 0.05% THD 400 W
(with IT-42*)
- - 400 W 800 W 200 W 400 W 800 W
70V, 1 kHz, 0.05% THD - - - 440 W 1000 W 250 W 440 W 1000 W
70V, 1 kHz, 1% THD - - - 600 W 1200 W 300 W 600 W 1200 W
16 ohms, 20 Hz-20 kHz, 0.1% THD 400 W 600 W 850 W 1100 W 1400 W - 1100 W 1400 W
8 ohms, 20 Hz-20 kHz, 0.1% THD 700 W 1100 W 1500 W 2000 W 2200 W - - 2200 W
4 ohms, 1 kHz, 1% THD 1200 W 1600 W 2400 W 3000 W 3400 W - - -
140V, 20 Hz-20 kHz, 0.05% THD - - - 800 W 1600 W 400 W 800 W 1600 W
140V, 1 kHz, 0.05% THD - - - 880 W 2000 W 500 W 880 W 2000 W
140V, 1 kHz, 1% THD - - - 1200 W 2400 W 600 W 1200 W 2400 W
Noise, 20 Hz-20 kHz >-107 dB >-107 dB >-106 dB >-106 dB >-106 dB >-106 dB >-106 dB >-106 dB
Input Sensitivity @ 8 ohms 1.26 Vrms 1.23 Vrms 1.16 Vrms 1.17 Vrms 1.35 Vrms 1.26 Vrms 1.26 Vrms 1.26 Vrms
Voltage Gain @ 8 ohms
30 dB 32 dB 34 dB 35 dB 35 dB 35 dB 35 dB 35 dB
Output Circuitry AB+B AB+B H, 2-tier H, 2-tier H, 2-tier AB+B AB+B H, 2-tier
Distortion (SMPTE-IM) Less than 0.02%
Distortion (Typical)
20 Hz-20 kHz: 10 dB below rated power
1.0 kHz and below: full rated power

Less than 0.01% THD
Less than 0.01% THD
Frequency Response 20 Hz-20 kHz, +/- 0.2 dB
Damping Factor
Greater than 500
Input Impedance
6k ohms unbalanced, 12k ohms balanced
Input Clipping
10 Vrms (+22 dB)
Variable-speed fan, rear-to-front air flow
Connectors, each channel

Input: 3-pin XLR & 3-pin detachable terminal blocks (1 each per channel)
Output: Safety-shrouded barrier strip
Amplifier Protection
Full short circuit, open circuit, thermal, ultrasonic, and RF protection.
Stable into reactive or mismatched loads.
Load Protection
On/Off muting, DC-fault power supply shutdown

19" (48.3 cm) wide, 3.5" (8.9 cm) tall (2 RU),
14" (35.6 cm) deep (from front mounting rails)
21 lbs (9.5 kg) net
27 lbs (12.3 kg) shipping

Power Specifications

Number of Channels
This is the number of channels that the professional amplifier is designed to power.
2 Channels
Continuous Power @ 8 ohm
This is the continuous (RMS) power output of the amplifier at an 8 ohm impedance.
700 watts x 2 channels
Continuous Power @ 4 ohm
This is the continuous (RMS) power output of the amplifier at an 4 ohm impedance.
1100 watts x 2 channels
Continuous Power @ 2 ohm
This is the continuous (RMS) power output of the amplifier at an 2 ohm impedance.
1700 watts x 2 channels
Continuous Power @ 8 ohm (Bridged)
This is the continuous (RMS) power output of the amplifier at a bridged 8 ohm impedance.
2200 watts x 1 channels
Continuous Power @ 4 ohm (Bridged)
This is the continuous (RMS) power output of the amplifier at a bridged 4 ohm impedance.
3400 watts x 1 channels
Total Continuous Power
This is the total continuous power rating (RMS) that the amplifier is able to output.
3400 watts

Amplifier Specifications

Amplifier Class

An amplifier increases the power of the signal being fed to it by taking energy from its power supply and matching the signal but increasing its amplitude. Amplifiers use many different methods for converting these electrical signals and have been categorized into classes.

Class A/B: Greater than 50% of the input signal is amplified while the other percentage is “off”. These amplifiers have a small amount of current flowing through the output transistors all the time which almost eliminates crossover distortion. Class A/B has great sound quality but is not as efficient as class D. These amps are most commonly used to drive speakers.

Class D: Also known as switching amplifiers, class D amps have output transistors that are completely turned “on” or “off”. This means that when the transistors are on, there is almost no voltage across them but when they are off there is significant voltage but no current flowing through it which makes these amplifiers very efficient at the cost of sound quality. These amps are most commonly used to drive subwoofers.

Other Classes: You may see classes such as GH, bD, X, FD, etc. by some manufactures. These amplifiers tend to be either class A/B, D or a hybrid of the two but with improvements to their designs that can make them more efficient or offer better sound quality.

Signal-to-Noise Ratio
This spec compares the strength of the signal to the level of background noise. A higher value indicates less background noise.
> -106 dB
Frequency Response
The range of frequencies the amplifier will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
20 - 20000 Hz
Input Sensitivity
This is the input sensitivity of the amplifier.
1.35 volts
THD (Total Harmonic Distortion)
The amount of change in harmonic content of the signal as it is amplified. A lower figure indicates less change and a more accurate amp. THD below 0.10% is inaudible.
Voltage Gain
This is the voltage gain of the amplifier measured in decibels.
35 dB
Cooling Options
These are the different cooling systems used in the amplifier to keep it cool.
Cooling Fan
These are the type of input connections that the amplifier has.
These are the types of output connections that the amplifier has.

Physical Specifications

The height of the item, measured from top to bottom, in inches.
The width of the item from left to right (side-to-side) measured in inches.
The front-to-rear depth of the item, in inches. If the item is angled or slanted, this value is the bottom measurement.
Weight (Pounds)
This is the weight of the item in pounds (lbs).
21 lbs
Rackmount Spaces
This is the total number of spaces that the preamplifier will occupy when mounted on a rack.

Specials with this Item

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Warranty and Return Policy

Parts Warranty Duration
3 years
Labor Warranty Duration
3 years
Warranty Provider

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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: QSC CX1102

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QSC CX1102

3400W, 2 Channel Power Amplifier


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