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CX 8-Channel Series

CX 8-Channel Series

Designed for permanently installed sound systems where rackspace is at a premium, QSC's CX108V and CX168 provide unprecedented levels of channel density for multi-channel amplifiers. The CX108V and CX168 provide 100 watts per channel at 70 volts and 90 watts per channel at 8 ohms respectively. With both models, each pair of channels may be bridged to configure these amplifiers as 4, 5, 6, or 7 channel units. Like the entire CX Series, the 8-channel models feature DataPorts for remote amplifier management or signal processing, incorporate QSC's legendary PowerLight® technology, and deliver our unmatched reputation for quality and reliability.


Amplifier Control and Monitoring

Q-Sys Compatible

Advanced monitoring and control when used with a Q-Sys or BASIS system. Learn more
QSC's PowerLight technology takes your audio to an entirely new level. Delivering tighter bass and clean, transparent highs, PowerLight also cuts waste heat, boosts reliability, and eliminates 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 per second through an ultra-low noise impedance circuit. Unlike amplifiers that use conventional supplies, the audio signal is never starved prematurely and remains crisp and clean.

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.



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CX SERIES AMPLIFIERS

DOCUMENTS

CX168 Users Manual (PDF 1.9MB)
CX108V Users Manual (PDF 3.6MB)
CX168 and 108V Specifications (PDF 280K)
CX Application Guide (PDF 1.2MB)

HI-RES IMAGES

Front (4554x1080, 1.04MB)
Rear (4068x1096, 844K)
Front Left (4982x1298, 696)
Front Right (4934x1400, 840)

RESOURCES

Architect's & Engineer's Specifications
Loudspeaker Impedance Calculator

CAD DRAWINGS

CX108V (DXF, zipped 1MB)
CX168 (DXF, zipped 37K)

ACCESSORIES

Handle:
2RU

DataPort Accessories:
DSP-3* | DSP-4* | DPX-4 | DDI-3

Transformers:
70-Volt Output: OT-300a

Input: XF-1

Limiters/Attenuators:
SPL-1 | SPA-3*

*Remote Mounting only, DPX-2 and DPX-4 Recommended

RoHS Compliant
RoHS Compliant



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SPECIFICATIONS CX168 CX108V
  STEREO MODE, All Channels Driven
Continuous Average Output Power Per Channel
  8 ohms 0.05% THD 20 Hz - 20 kHz 90W -
  4 ohms 0.1% THD 20 Hz - 20 kHz 130W -
Midband Ratings
  8 ohms 0.1% THD 1 kHz
  4 ohms 0.1% THD 1 kHz
  70V 0.2% THD 20 Hz-20 kHz		 All Channels
100W
140W
- 		Single Ch.
120W
180W
-
-
-
100W
  BRIDGE MONO MODE
16 ohms 0.1% THD 20 Hz - 20 kHz
8 ohms 0.1% THD 20 Hz - 20 kHz
140V 0.2% THD 20 Hz-20 kHz
 180W
260W
- 		-
-
200W
Noise (20 Hz - 20 kHz) -107 dB -100 dB
Input Sensitivity (for full-rated output power) 1.35 Vrms @ 8 ohms 1.26 Vrms @ 70V
Voltage Gain 20x (26 dB) 56x (35 dB)
Input Clipping 6 Vrms (+18 dBu) 6 Vrms (+18 dBu)
Output Circuitry Class AB+B Class AB+B
Frequency Response 20 Hz - 20 kHz, ± 0.2 dB
8 Hz - 50 kHz, +0/-3 dB 		20 Hz - 20 kHz, ± 0.4 dB
8 Hz - 70 kHz, +0/-3 dB
Damping Factor Greater than 200
(5 kHz and below) 		Greater than 500
(5 kHz and below)
Input Impedance 6 kilohms unbalanced,
12 k ohm balanced 		6 kilohms unbalanced,
12 k ohm balanced
Distortion (SMPTE-IM) Less than 0.02%
Distortion (typical)
  20 Hz - 20 kHz: 10 dB below rated power
  1.0 kHz and below: full rated power

Less than 0.1% THD
Less than 0.03% THD
Connectors Input: 3-pin Euro-style detachable terminal blocks, (one per ch.)
DataPort: HD-15 Connector, (Ch 1+2, 3+4, 5+6, 7+8)
Output: Two 8-pin Euro-style detachable terminal blocks
Cooling Variable 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-35db: Green LED
(1 per channel)
CLIP: Red LED (1 per channel)		 PARALLEL INPUTS: Orange LED (1 per ch. pair)
BRIDGED: Yellow LED (1 per ch. pair)
Amplifier Protection Full short circuit, open circuit, thermal, ultrasonic, and RF protection; Stable into reactive or mismatched loads
Load Protection On/off muting; Individual channel DC fault blocking
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 VAC, 50-60 Hz (configured at factory)

Current Consumption 120V
CX 168
CX 108V
Idle current
(Multiply currents by 0.5 for 230V units.)
0.6 A
0.6 A
1/8 Average Power*
(typical of program material at maximum
unclipped power) *Pink noise
8 ohms
4 ohms
70V
6.2 A
9.2 A
-
-
-
6.3 A
1/3 Average Power*
(typical of program material with
severe clipping) *Pink noise
8 ohms
4 ohms
70V
9.2 A
14.2 A
-
-
9.4 A

*(0.1%THD, 1 kHz)

All Specification Subject to Change Without Notice.

PowerLight is a registered trademark of QSC Audio Products, LLC

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