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 PowerLightฎ 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 shipping
Distortion (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, ฑ 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 balanced
Cooling
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 & 4
DataPort: HD-15 Connector, Ch 1+2, Ch 3+4
Output: Six-position barrier strip with monitor connections, Ch 1+2, Ch 3+4
Amplifier 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 knobs
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
Dimensions
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) Shipping
Power 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%
Visit the official QSC website for more information on the
QSC 4 Channel 400x@4 ohms
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