QSC CX254 250-Watt Four-Channel Low-Z Power Amplifier

QSC
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  • 250Watts @4 Ohms; 450Watts @2 Ohms
  • Compact size — only 2 RU and 14″ deep for reduced rack cost and floor space
  • Bridgeable channels 1 + 2 and 3 + 4, for maximum flexibility
  • Active inrush limiting eliminates AC inrush current, removing the need for expensive power sequencers
  • HD15 DataPort connector for Q-SYS networked control and monitoring

$1,804.00 CAD

In stock

Description

About QSC CX254 250-Watt Four-Channel Low-Z Power Amplifier

The CX 4-channel series is a line of four channel amplifiers designed for installation applications requiring premium sound quality and high output. Recognized by sound contractors worldwide for their reliability, CX 4-channel amplifiers feature PowerLight™ power supply technology reducing weight, eliminating AC mains hum and improving audio quality. The highly efficient power supply also draws less power and produces less heat resulting in added energy savings. CX 4-channel amplifiers also feature advanced amplifier control and monitoring via the Q-SYS™ network audio platform.

  • Active Inrush Limiting gently brings amplifiers on-line eliminating the need for costly AC power sequencers.
  • Front-panel gain controls with1 dB detents allow for precise level adjustment and are protected by tamper-proof security covers.
  • DataPort connections enable remote control and monitoring of amplifier functions via Q-SYS™.
  • Selectable clip limiters and infra-sonic filters protect loudspeakers from damage due to distortion and over-excursion.
  • DataPort or Block Connector Inputs and touch-proof barrier-strip outputs.
  • Sleep (Standby) Mode for energy saving efficiency.
  • Transformer-less 70 volt model available (CX204V).

Additional information

Weight 27 lbs
Dimensions 24 x 18 x 5.5 in

Features

QSC CX254 250-Watt Four-Channel Low-Z Power Amplifier Features:

  • Compact size — only 2 RU and 14″ deep for reduced rack cost and floor space
  • Bridgeable channels 1 + 2 and 3 + 4, for maximum flexibility
  • Active inrush limiting eliminates AC inrush current, removing the need for expensive power sequencers
  • HD15 DataPort connector for Q-SYS networked 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 (50 Hz or 75 Hz)
  • 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
  • Lightweight—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.

Specifications

SPECIFICATIONS CX204V CX254 CX404
POWER PER CHANNEL, STEREO MODE (all channels driven)
8Ω, 20 Hz–20 kHz 0.05% THD 170 W 250 W
4Ω, 20 Hz–20 kHz 0.05% THD 250 W 400 W*
2Ω, 1 kHz 1% THD 450 W not recommended
70 V, 20 Hz–20 kHz 0.05% THD 200 W
70 V, 1 kHz 0.05% THD 220 W
70 V, 1 kHz 1% THD 300 W
POWER, BRIDGED MONO MODE
16Ω, 20 Hz–20 kHz 0.1% THD 340 W 500 W
8Ω, 20 Hz–20 kHz 0.1% THD 500 W 800 W*
4Ω, 1 kHz 1% THD 900 W not recommended
140 V, 20 Hz–20 kHz 0.1% THD 400 W
140 V, 1 kHz 0.05% THD 440 W
140 V, 1 kHz 1% THD 600 W
Noise, 20 Hz–20 kHz >106 dB >106 dB >105 dB
Input Sensitivity 1.26 V rms 1.22 V rms 1.22 V rms
Maximum Voltage Gain 35 dB 29 dB 31 dB
Input Clipping 10 V rms (+22 dBu) 10 V rms (+22 dBu) 10 V rms (+22 dBu)
Output Circuitry Class AB+B AB+B AB+B
Distortion(SMPTE-IM) Less than 0.02% Less than 0.01% Less than 0.01%
ALL MODELS
Distortion(Typical)
20 Hz–20 kHz: 10 dB below rated power
1.0 kHz and below: full rated power
Less than 0.01% THD
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
6 kΩ unbalanced, 12 kΩ balanced
Cooling
Variable 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 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
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
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 lb (12.3 kg) shipping
Power Requirements
100, 120, 230 V AC, 50–60 Hz

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