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QSC CX404 4-Channel Contractor Amplifier

qsc cx404
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The new 4-channel CX amplifiers give you four channels in only two rack spaces-without compromising on power. It's equipped with our exclusive PowerLight switching power supply technology to virtually eliminate noise and hum. With high output power, versatile loading options, high thermal capacity and unmatched reliability, the CX Series is the perfect solution to any permanently installed sound system.

Features• Active Inrush Limiting eliminates AC inrush current, removing the need for expensive power sequencers • HD15 DataPort connector for QSControl computer control • 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 • 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 (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 • High-performance Class AB+B complementary bipolar output circuitry • Light weight-all models only 21 pounds (9.5 kg) for easier racking and shippingDistortion (Typical)• 20 Hz-20 kHz: 10 dB below rated power - Less than 0.01% THD• 1.0 kHz and below: full rated power - Less than 0.01% THD Frequency Response (typical) • 20 Hz-20 kHz, 0.2 dB • 8 Hz-50 kHz, +0/-3 dB Damping Factor • Greater than 500 (1 kHz and below) Input Impedance • 6k ohms unbalanced, 12k ohms balancedCooling • Variable speed fan, rear to front airflow through tunnel heat sink Connectors, each channel• Input: 3 position Euro-style detachable barrier block, Ch 1,2,3 & 4DataPort: HD-15 Connector, Ch 1+2, Ch 3+4Output: Six-position barrier strip with monitor connections, Ch 1+2, Ch 3+4Amplifier Protection• Full short circuit, open circuit, thermal, ultrasonic, & protection. Stable into reactive or mismatched loads.Load Protection• On/off muting, DC-fault power supply protection Indicators• 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)Controls• Controls Front: AC switch, Ch.1 and Ch.2 gain knobsRear: 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 modeDimensions• 19" (48.3 cm) rack mounting, 3.5" (8.9 cm) tall (2 rack spaces),14" (35.6 cm) deep (from front mounting rails)Weight • 21 lb (9.5 kg) net, 27 lbs (12.3 kg) ShippingPower Requirements • 100, 120, 230 Vac, 50-60 Hz Specifications• Stereo Mode • 8 ohms 20 Hz-20 kHz 0.05% THD - 250W • 4 ohms 20 Hz-20 kHz 0.05% THD - 400W*• Bridged MONO mode • 16 ohms 20 Hz-20 kHz 0.1% THD - 500W • 8 ohms 20 Hz-20 kHz 0.1% THD - 800W • Noise, 20Hz-20kHz - <-106 dB • Input Sensitivity - 1.22Vrms • Gain (for full-rated output power) - 31 dB @ 8 ohms • Input Clipping - Input Clipping • Output Circuitry - AB+B • Distortion (SMPTE-IM) - Less than 0.01%

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