QSC CX254 4 channels, 170 watts/ch at 8Ω, 250 watts/ch at 4Ω, 450 watts/ch at 2Ω

Vendor: QSC
Description QSC CX254 4 channels, 170 watts/ch at 8Ω, 250 watts/ch at 4Ω, 450 watts/ch at 2Ω With this 4-channel CX amplifiers it can give you four channels, without compromising the power, in...
$1,750.00
Title

QSC CX254 4 channels, 170 watts/ch at 8Ω, 250 watts/ch at 4Ω, 450 watts/ch at 2Ω

With this 4-channel CX amplifiers it can give you four channels, without compromising the power, in only two rack spaces. You can choose from three models, two low-impedance versions and a one direct 70 volt model. Each of this model is crafted with exclusive QSC Powerlight™ switching power supply technology to eliminate the hum and noise virtually. The CX Series is the perfect solution because it is designed with high-thermal capacity, high-output power, versatile loading options and unmatched reliability, to any permanently installed sound system. One of this amplifier is QSC CX254 4 channels, 170 watts/ch at 8Ω, 250 watts/ch at 4Ω, 450 watts/ch at 2Ω.

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 (33 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 CX254
  POWER PER CHANNEL, STEREO MODE (all channels driven)
8Ω, 20 Hz–20 kHz 0.05% THD 170 W
4Ω, 20 Hz–20 kHz 0.05% THD 250 W
2Ω, 1 kHz 1% THD 450 W
70 V, 20 Hz–20 kHz 0.05% THD -
70 V, 1 kHz 0.05% THD -
70 V, 1 kHz 1% THD -
  POWER, BRIDGED MONO MODE
16Ω, 20 Hz–20 kHz 0.1% THD 340 W
8Ω, 20 Hz–20 kHz 0.1% THD 500 W
4Ω, 1 kHz 1% THD 900 W
140 V, 20 Hz–20 kHz 0.1% THD -
140 V, 1 kHz 0.05% THD -
140 V, 1 kHz 1% THD -
Noise, 20 Hz–20 kHz >106 dB
Input Sensitivity 1.22 V rms
Maximum Voltage Gain 29 dB
Input Clipping 10 V rms (+22 dBu)
Output Circuitry Class AB+B
Distortion(SMPTE-IM) 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