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User Manual for QSC CX404 4-Channel Power Amplifier Click to enlarge the picture
Contents of the user manual for the QSC CX404 4-Channel Power Amplifier
- 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 CX404 4-Channel Power Amplifier 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 QSC CX404 is a 4-channel power amplifier, designed primarily in support of fixed installation sound systems. The 2RU rackmountable unit is surprisingly lightweight, and provides a customized integrated security cover.Designed for a space and energy efficient working life in a facility rack, QSC has equipped the CX404 with a varispeed fan cooling system, featuring rear to front airflow exiting through the front panel grill, and the uniquely efficient Powerwave technology for the switching power supply. The Powerwave design sends current to the amp's power circuitry by charging the supply rails a staggering 230,000 times a second via a very low impedance circuit. The result is a consistently clean signal, and efficient, predictable power distribution that contributes to lowered heat buildup and improved signal reproduction. The CX404 is loaded with rear panel controls and front panel indicators, including dedicated, detented rotary gain control knobs, LF filter switches, and clip protection activation. An HD15 Dataport is located on the rear panel for computer-integrated remote control and system updating, using QSCcontrol software. The CX404 incorporates the design, cost-effective operation, and performance features that QSC is able to implement after three decades of experience building amplifiers serving all professional sound markets. - Three models that range in power from 170 watts to 450 watts per channel
- Compact size-all models only 2 RU and 14" deep for reduced rack cost and floor space
- Channels 1&2 and 3&4 bridgeable for maximum flexibility
- Active Inrush Limiting eliminates AC inrush current, removing the need for expensive power sequencers
- HD15 DataPort connector for Q-Sys and QSControl computer control and monitoring
- Custom integrated security cover for tamper-proof installations
- Variable speed fan for low noise
- 1dB detented gain controls for fast and accurate gain settings
- Detachable Euro style input connectors
- DIP switch control for clip limiters, high pass filters, bridge mono and parallel operation
- Exclusive PowerLight switch-mode power supply technology for high performance and compact size
- Selectable high-pass filters protect speakers and prevent speaker transformer saturation with minimal effect on program material (33Hz or 75Hz on non-V models, 50Hz or 75Hz 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
- High-performance Class AB+B complementary bipolar output circuitry
- Light weight-all models only 21 pounds (9.5 kg) for easier racking and shipping
- 3-year warranty plus optional 3-year extended service contract
- All CX Series amplifiers meet the European Union's, 2006 RoHS directive to restrict the use of hazardous materials used in electronic devices.
UPC: 684284001498 In the Box QSC CX404 4-Channel Power Amplifier Power Cable Owner's Manual 3 Year Warranty Table of Contents
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Technical parametersQSC CX404 Specs | Power Rating | Stereo @ 2 Ohms: Not Recommended
Stereo @ 4 Ohms: 400W per Channel
Stereo @ 8 Ohms: 250W per Channel
Bridge-Mono @ 4 Ohms: 900W per Channel
Bridge-Mono @ 8 Ohms: 800W per Channel
Bridge-Mono @ 16 Ohms: 500 Watts per Channel | | Damping Factor | >500(1kHz and below) | | Input Sensitivity | 1.22 Vrms | | Input Impedance | 12k ohms(Balanced)
6k ohms(Unbalanced) | | Gain | 31dB @ 8 ohms | | Frequency Response | 20Hz - 20kHz, +/- 0.2 dB
8Hz - 50kHz, +0, -3 dB | | Signal-to-Noise Ratio | < - 106dB | | Total Harmonic Distortion (THD) | < 0.01%, 10db | | Input Connections | Input: 3 position Euro-style detachable barrier block, Ch 1,2,3 & 4
DataPort: HD-15 Connector, Ch 1+2, Ch 3+4 | | Output Connectors | Output: Six-position barrier strip with monitor connections, Ch 1+2, Ch 3+4 | | Controls Front Panel | Controls Front: AC switch, Ch.1 and Ch.2 gain knobs | | Controls (Rear) | Rear: DIP switch for Ch.1 and Ch.2: clip limiter on/off, LF filter on/off, LF filter freq select 33 Hz or 75 Hz for non-V models; 50 Hz or 75 Hz for V models; inputs parallel or stereo; bridge mode | | Indicators | PARALLEL INPUTS: Red LED
BRIDGED: Yellow LED PWR-ON: Green LED
CLIP/PROT: Red LED (1 per channel) LEVEL-10 dB: Yellow LED (1 per channel)
LEVEL-20 dB: Yellow LED (1 per channel) SIGNAL -35 dB: Green LED (1 per channel) | | Cooling | Variable Speed Fan, Rear to Front Airflow through Tunnel Heat Sink | | Power Consumption | 100, 120, 230 VAC, 50-60 Hz | | Dimensions (WxHxD) | 19 x 3.5 x 14" (483 x 89 x 356mm) | | Weight | 21 lbs (9.5kg) | | Specialties | Powerwave Power Supply
Varispeed Fan Cooling
Custom Integrated Security Cover | | | | Package Weight | 27.3 lb | | Box Dimensions (LxWxH) | 24.0 x 18.0 x 6.0" |
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