null Skip to main content
QSC CX254 4-Channel 170W Power Amplifier
[DISCONTINUED] QSC CX254 4-Channel 170W Power Amplifier

[DISCONTINUED] QSC CX254 4-Channel 170W Power Amplifier

(No reviews yet)
SoundPro Item: 47548
MPN: CX254
No Longer Available for Purchase
Add to Wish List

Account manager
Have a Question? Ask an Account Manager

The CX Series is designed to meet the specialized needs of sound contractors. Eight 2-channel models have been designed from the ground up, combining the exclusive QSC PowerLight™ technology with specific features to meet the requirements of fixed installations. 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.

QSC CX254 Features

  • 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
  • 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
  • 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.
  • CX254 4-Channel 170W Power Amplifier1
  • POWER PER CHANNEL, STEREO MODE (all channels driven)
    • 8Ω, 20 Hz–20 kHz 0.05% THD: 170W
    • 4Ω, 20 Hz–20 kHz 0.05% THD: 250W
    • 2Ω, 1 kHz 1% THD: 450W
    • 16Ω, 20 Hz–20 kHz 0.1% THD: 340W
  • Noise, 20 Hz–20 kHz>106 dB
  • Input Sensitivity1.22 V rms
  • Maximum Voltage Gain29 dB
  • Input Clipping10 V rms (+22 dBu)
  • Output Circuitry ClassAB+B
  • Distortion (SMPTE-IM)Less than 0.01%
  • Distortion (Typical) 20 Hz–20 kHz: 10 dB below rated powerLess than 0.01% THD
  • 1.0 kHz and below: full rated powerLess than 0.01% THD
  • Frequency Response (typical)20 Hz–20 kHz, ± 0.2 dB 8 Hz–50 kHz, +0/-3 dB
  • Damping FactorGreater than 500 (1 kHz and below)
  • Input Impedance6 kΩ unbalanced, 12 kΩ balanced
  • CoolingVariable speed fan, rear to front airflow through tunnel heat sink
  • Connectors, each channel
    • Input: 3 position Euro-style detachable barrier block, channels 1, 2, 3, 4
    • DataPort: two HD-15 connectors—Ch 1+2, Ch 3+4
    • Output: Six-position barrier strip with monitor connections, Ch 1+2, Ch 3+4
  • Amplifier ProtectionFull short circuit, open circuit, thermal, ultrasonic, & protection. Stable into reactive or mismatched loads.
  • Load ProtectionOn/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, four gain knobs
    • Rear: Two DIP switch gangs—channels 1 and 2; channels 3 and 4: 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
  • Dimensions19" (48.3 cm) rack mounting, 3.5" (8.9 cm) tall (2 rack spaces), 14" (35.6 cm) deep (from front mounting rails)
  • Weight21 lb (9.5 kg) net, 27 lb (12.3 kg) shipping
  • Power Requirements100, 120, 230 V AC, 50–60 Hz

In The Box

QSC CX254 4-Channel 170W Power Amplifier

Customer Reviews