Features
• 8 models to meet your exact power requirements
• Exclusive PowerLight switch-mode power supply technology for high performance and
compact size
• 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
• Active inrush limiting eliminates AC inrush current, removing the need for expensive
power sequencers
• XLR and detachable Euro-style input connectors
• HD15 DataPort connector for QSControl computer control or signal processing
accessories
• 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 (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
• Class H complementary bipolar output circuitry for high efficiency (CX702, CX902,
CX1102 & CX1202V)
• Optional external transformer accessory pack for isolated 70 and 100 volt outputs
(converts CX302 to 400 watts per channel isolated output)
• Compact size – all models only 2 RU and 14" deep for reduced rack cost and
floor space
• Lightweight – all models only 21 pounds (9.5 kg) for easier racking and shipping
• 3-year warranty plus optional 3-year extended service contract
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.
CX 2-channel
Professional Power Amplifiers
CX 2-channel Amplifiers
Watts per channel
Model 70 V* 8Ω** 4Ω** 2Ω†
CX302 − 200 325 600
CX502 − 300 500 800
CX702 − 425 700 1200
CX902 440 550 900 1500
CX1102 1000 700 1100 1700
CX302V 250 − − −
CX602V 440 550 − −
CX1202V 1000 700 1100 −
*1 kHz, 0.05% THD
**20 Hz – 20 kHz, 0.05% THD
†
1 kHz, 1% THD
CX302 | CX502 | CX702 | CX902 | CX1102 | CX302V | CX602V | CX1202V
All models include an
integrated security cover for
tamper-proof installations
CX302 CX502 CX702 CX902 CX1102 CX302V CX602V CX1202V
Stereo Mode (both channels driven) Continuous average output power per channel
8Ω / 20 Hz – 20 kHz / 0.05% THD 200 W 300 W 425 W 550 W 700 W – 550 W 700 W
4Ω / 20 Hz – 20 kHz / 0.05% THD 325 W 500 W 700 W 900 W 1100 W – – 1100 W
2Ω / 1 kHZ / 1% THD 600 W 800 W 1200 W 1500 W 1700 W – – -
70V / 20 Hz – 20 kHz / 0.05% THD − — — 400 W 800 W 200 W 400 W 800 W
70V / 1 kHz / 0.05% THD — — — 440 W 1000 W 250 W 440 W 1000 W
70V / 1 kHz / 1% THD — — — 600 W 1200 W 300 W 600 W 1200 W
Bridge-Mono Mode Bridge-mono mode operation
16Ω / 20 Hz – 20 kHz / 0.1% THD 400 W 600 W 850 W 1100 W 1400 W — 1100 W 1400 W
8Ω / 20 Hz – 20 kHz / 0.1% THD 700 W 1100 W 1500 W 2000 W 2200 W – – 2200 W
4Ω / 1 kHz / 1% THD 1200 W 1600 W 2400 W 3000 W 3400 W – – –
140V / 20 Hz – 20 kHz / 0.1% THD — — — 800 W 1600 W 400 W 800 W 1600 W
140V / 1 kHz / 0.05% THD — — — 880 W 2000 W 500 W 880 W 2000 W
140V / 1 kHz / 1% THD — — — 1200 W 2400 W 600 W 1200 W 2400 W
Signal to Noise (20 Hz – 20 kHz) > -107 dB > -107 dB > -106 dB > -106 dB > -106 dB > -106 dB > -106 dB > -106 dB
Input Sensitivity at 8Ω 1.26 Vrms 1.23 Vrms 1.16 Vrms 1.17 Vrms 1.35 Vrms 1.26 Vrms 1.26 Vrms 1.26 Vrms
Gain at 8Ω 30 dB 32 dB 34 dB 35 dB 35 dB 35 dB 35 dB 35 dB
Output Circuitry Class AB+B Class AB+B 2-tier Class H 2-tier Class H 2-tier Class H Class AB+B Class AB+B 2-tier Class H
Distortion (SMPTE-IM) < 0.02%
Distortion (typical)
20 Hz – 20 kHz: 10 dB below rated power < 0.01% THD
1.0 kHz and below: full rated power < 0.01% THD
Frequency Response 20 Hz - 20 kHz, ± 0.2 dB
Damping Factor > 500
Input Impedance 6k ohms unbalanced, 12k ohms balanced
Input Clipping 10 Vrms (+22 dBu)
Cooling Variable-speed fan, rear-to-front air flow
Connectors Input: 3-pin XLR & 3-pin detachable terminal blocks (1 each per channel) Output: Safety shrouded barrier strip
Amplifier Protection Full short circuit, open circuit, thermal, ultrasonic, RF protection. Stable into reactive or mismatched loads
Load Protection On/off muting, DC-fault power supply shutdown
Dimensions (HWD) 3.5" (8.9 cm) 2 RU x 19" (48.3 cm) rack mounting x 14" (35.6 cm) from front mounting rails
Weight - Net / Shipping 21 lb (9.5 kg) / 27 lb (12.3 kg)
120V Current Consumption Idle 0.8 A 0.9 A 0.9 A 0.9 A 0.9 A 0.8 A 0.9 A 0.9 A
1/8 power pink noise 8Ω 3.8 A 5.6 A 5.0 A 6.0 A 7.6 A – – –
4Ω 6.0 A 9.0 A 7.9 A 9.5 A 11.6 A – – –
2Ω 9.6 A 14.0 A 11.8 A 14.0 A 16.6 A – – –
70V – – – – – 5.7 A 8.7 A 12.0 A
1/3 power pink noise 8Ω 5.4 A 8.0 A 8.4 A 11.0 A 13.1 A – – –
4Ω 8.9 A 13.3 A 13.5 A 17.0 A 20.0 A – – –
2Ω 14.3 A 21.0 A 22.0 A 27.0 A – – – –
70V – – – – – 8.0 A 13.0 A 19.0 A
CX2-Channel Specifications
1675 MacArthur Boulevard • Costa Mesa, CA 92626 • Ph: 800/854-4079 or 714/957-7100 • Fax: 714/754-6174 qscaudio.com
CX 2-channel Spec Sheet - 05/15/09
Specifications subject to change without notice.
(typical of program material
with severe clipping)
(typical of program material at
maximum unclipped power)
QSC, the QSC logo and PowerLight are registered trademarks of QSC Audio Products, LLC in the U.S. Patent and Trademark office and other countries.
All other trademarks are the property of their respective owners. Patents may apply or be pending.
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