QSC Audio Products, LLC. CX Series 800W 4-Channel Amplifier CX404

4-channel CX amplifiers give you four channels in only two rack spaces-without compromising on power. Each is equipped with QSC's 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.
With PowerLight technology, CX amplifiers take your sound to a whole new level. Not only does it give you tighter bass and clean transparent highs, PowerLight also cuts waste heat, boosts reliability and gets rid of unwanted noise and hum. PowerLight is a revolutionary switching power supply technology that provides ample current to the audio power circuitry by charging the supply rails 230,000 times a second through an ultra-low impedance circuit. So unlike amplifiers that use conventional supplies, the audio signal is never starved prematurely and remains crisp and clean.
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 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
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)
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