[DISCONTINUED] QSC CX168 8-Channel 90W Power Amplifier

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 CX168 Features

• 100 watts per channel at 70 volts (CX108V)
• 90 watts per channel at 8 ohms and 130 watts per channel at 4 ohms (CX168)
• Compact size - only two rack spaces and 14" deep for reduced rack space
• Channel pairs bridgeable for maximum flexibility
• Exclusive PowerLight switch-mode power supply technology for high performance and compact size
• Active Inrush Limiting eliminates AC inrush current, removing the need for expensive power sequencers
• Four HD15 DataPorts (one per channel pair) for Q-Sys and QSControl computer control and monitoring
• Custom integrated gain control security cover for tamper-proof installations
• 1 dB recessed detented gain controls for fast and accurate settings
• Detachable Euro style input and output connectors
• DIP switch control for clip limiters, high-pass filters, bridge mono and parallel operation
• Selectable high-pass filters protect speakers and prevent speaker transformer saturation with minimal effect on program material (50 Hz or 75 Hz; CX108V) (33 Hz or 70 Hz; CX168)
• Comprehensive front panel indicators including signal, clip, bridge mono and parallel input LEDs
• Fully protected - including DC, infrasonic and ultrasonic, thermal overload and short circuit protection
• High-performance Class AB+B complementary bipolar output circuitry
• Light weight - 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.

• CX168 8-Channel 90W Power Amplifier1

• STEREO MODE, All Channels Driven (Continuous Average Output Power Per Channel)
  • 8Ω, 0.05% THD 20 Hz–20 kHz: 90W
  • 4Ω, 0.1% THD 20 Hz–20 kHz: 130W
• Midband Ratings
  • 8Ω, 0.1% THD 1 kHz
  • 4Ω, 0.1% THD 1 kHz
• All channels
  • 100 W
  • 140 W
• Single channel
  • 120 W
  • 180 W
• BRIDGE MONO MODE
  • 16Ω, 0.1% THD 20 Hz–20 kHz: 180W
  • 8Ω, 0.1% THD 20 Hz–20 kHz: 260W
  • 140 V, 0.2% THD 20 Hz-20 kHz: NA
• Input Sensitivity (for full-rated output power)1.35 V rms @ 8 ohms
• Voltage Gain20× (26 dB)
• Input Clipping6 V rms (+18 dBu)
• Output Circuitry ClassClass AB+B
• Frequency Response
  • 20 Hz–20 kHz, ± 0.2 dB
  • 8 Hz–50 kHz, +0/-3 dB
• Damping FactorGreater than 200 (5 kHz and below)
• Input Impedance6 kΩ unbalanced, 12 kΩ balanced
• Distortion (SMPTE-IM)Less than 0.02%
• Distortion (typical) 20 Hz–20 kHz: 10 dB below rated powerLess than 0.1% THD
• 1.0 kHz and below: at full rated powerLess than 0.03% THD
• Connectors
  • Input: 3-pin Euro-style detachable terminal blocks, (one per ch.)
  • DataPort: HD-15 Connector, (one per channel pair: Ch 1+2, 3+4, 5+6, 7+8)
  • Output: Two 8-pin Euro-style detachable terminal blocks
• CoolingVariable speed fan, rear-to-front airflow through tunnel heat sink
• Controls
  • Front: AC switch, Ch 1, 2, 3, 4, 5, 6, 7 & 8 gain knobs
  • Rear: DIP switches for Ch. 1–Ch. 8, clip limiter on/off, LF filter on/off, LF filter freq select 33 or 70 Hz for CX168, LF filter freq select 50 or 75 Hz for CX108V, inputs parallel or stereo; bridge mode
• Indicators
  • PWR-ON: Green LED
  • SIGNAL-35 dB: Green LED (1 per channel)
  • CLIP: Red LED (1 per channel)
• Amplifier ProtectionFull short circuit, open circuit, thermal, ultrasonic, and RF protection; Stable into reactive or mismatched loads
• Load ProtectionOn/off muting; Individual channel DC fault blocking
• Dimensions (HWD)3.5 x 19 x 14 / 2RU inches (89 x 483 x 356 / 2RU mm)
• Weight21 lb (9.5 kg) net, 27 lb (12.3 kg) shipping
• Power Requirements100, 120, 230 VAC, 50–60 Hz (configured at factory)