User Manual for QSC CX-902 2 Channel Direct Output Power Amplifier Click to enlarge the picture
Contents of the user manual for the QSC CX-902 2 Channel Direct Output
- Product category: Standard Amplifiers QSC
- Brand: QSC
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for QSC Standard Amplifiers
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User manual for the QSC CX-902 2 Channel Direct Output contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any QSC product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official QSC user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a QSC product will considerably shorten its lifespan!
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Product description The CX-902 2 Channel Direct Output Power Amplifier from QSC is a 2 channel, low impedance 550W output amplifier. It features PowerLight switch-mode power supply technology for high performance and has an integrated security cover designed for tamper-proof installations. This unit has a variable speed fan to maintain low noise, and 1 dB detented gain controls for fast and accurate gain settings. The active inrush limiting is designed to eliminate AC inrush current, and a class H complementary bipolar output circuitry is integrated for high efficiency.
The CX-902 features XLR and detachable Euro style input connectors and a barrier strip output connector. It also has an HD15 DataPort connector for Q-Sys and QSControl computer control and monitoring, as well as a DIP switch control for clip limiters, high pass filters, bridge-mono, and parallel operation. The selectable high pass filters protect speakers and prevent speaker transformer saturation. The unit's front panel indicators include signal, clip, protect, bridge mono, and parallel input LEDs. A comprehensive protection circuitry with DC, infrasonic, thermal overload, and short circuit protection is also featured. This unit is rackmountable and 14" deep for reduced rack cost and floor space. It is RoHS compliant and cULus listed. - 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 designed to eliminate AC inrush current
- XLR and detachable Euro style input connectors, barrier strip output connector
- 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
- Comprehensive front panel indicators including signal, clip, protect, bridge mono, and parallel input LEDs
- Comprehensive protection circuitry with DC, infrasonic, thermal overload, and short circuit protection
- Class H complementary bipolar output circuitry
- 2RU rackmountable and 14" deep for reduced rack cost and floor space
- Lightweight at 21 lb for easier racking and shipping
- RoHS compliant, cULus listed
UPC: 684284003621 In the Box QSC CX-902 2 Channel Direct Output Power Amplifier (550W, 8Ω) Security Cover for Gain Controls Adhesive Rubber Feet Table of Contents
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Technical parametersQSC CX-902 Specs | Power Rating | Stereo Mode (Both Channels Driven):
8 Ω: 550 W, 20 Hz - 20 kHz, 0.05% THD
4 Ω: 900 W, 20 Hz - 20 kHz, 0.05% THD
2 Ω: 1500 W, 1 kHz, 1% THD
70 V: 400 W, 20 Hz-20 kHz, 0.05% THD
70 V: 440 W, 1 kHz, 0.05% THD
70 V: 600 W, 1 kHz, 1% THD
Bridged Mono Mode:
16 Ω: 1100 W, 20 Hz - 20 kHz, 0.1% THD
8 Ω: 2000 W, 20 Hz - 20 kHz, 0.1% THD
4 Ω: 3000 W, 1 kHz, 1% THD
140 V: 800 W, 20 Hz - 20 kHz, 0.05% THD
140 V: 880 W, 1 kHz, 0.05% THD
140 V: 1200 W, 1 kHz, 1% THD | | Damping Factor | >500 | | Input Sensitivity | 1.17 V rms (+3.6 dBu) @ 8 Ω rated power
1.06 V rms (+2.7 dBu) @ 4 Ω rated power | | Input Impedance | Balanced: 12 kΩ
Unbalanced: 6 kΩ | | Headroom | 2 dB @ 4 Ω, dynamic | | Input Clipping Level | 10 V rms (+22 dBu) | | Voltage Gain | 35 dB | | Output Circuit | H, 2-tier | | Frequency Response | 20 Hz - 20 kHz, ± 0.2 dB | | Noise | 20 Hz - 20 kHz: >-106 dB | | Distortion | SMPTE-IM:
<0.02%
20 Hz - 20 kHz: 10 dB below rated power: <0.01% THD
<= 1.0 kHz: full rated power: <0.01% THD | | Connectors | 1 x 3-pin, power input
1 x 3-pin XLR, channel 1 input
1 x 3-pin XLR, channel 2 input
1 x 3-pin terminal block, channel 1 input
1 x 3-pin terminal block, channel 2 input
1 x HD15 15-pin, DataPort | | Controls | Front Panel:
1 x Channel 1 attenuation knob
1 x Channel 2 attenuation knob
1 x Power On/Off switch
Rear Panel:
1 x 10-position DIP switch, channel 1
1 x 10-position DIP switch, channel 2
1 x LF filter On/Off, channel 1
1 x LF filter On/Off, channel 2
1 x Mode selection switch (stereo / parallel / bridge) | | LED Indicators | 1 x Power, green
1 x Bridge, yellow
1 x Parallel, yellow
2 x Clip, red
2 x -10 dB, green
2 x -20 dB, green
2 x Signal, green | | Cooling | Variable-speed fan, rear-to-front air flow | | Power Consumption | Idle: 0.9 A
1/8 Power Pink Noise:
8 Ω: 6.0 A
4 Ω: 9.5 A
2 Ω: 14.0 A
1/3 Power Pink Noise:
8 Ω: 11.0 A
4 Ω: 17.0 A
2 Ω: 27.0 A | | Dimensions (W x L x D) | 19.0 x 3.5 x 14.0" (48.3 x 8.9 x 35.6 cm) | | Weight | 21 lb (9.5 kg) | | | | Package Weight | 28.5 lb | | Box Dimensions (LxWxH) | 24.0 x 18.0 x 6.0" |
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