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CX Series
CX 2-Channel Series
The CX 2-Channel Series is designed to meet the specialized needs of sound contractors. Five low impedance models and three 70 volt direct models have been designed from the ground up, combining QSC's exclusive PowerLight® technology with specific features to meet the requirements of fixed installations. With high output power, versatile loading options, high thermal capacity and reliability, the CX Series is the ideal solution to any permanently installed sound system.

The expanded eight model line now incorporates QSC's exclusive PowerLight technology. Three models, the CX302V, CX602V and CX1202V, add direct 70 volt capability ranging from 250 watts to 1000 watts per channel for distributed audio systems. The CX302, CX502, CX702, CX902 and CX1102 are low impedance versions ranging in power from 325 watts to 1100 watts per channel at 4 ohms (20 Hz -20 kHz, 0.05% THD).

The new CX amplifiers are equipped with many contractor specific features including 1 dB detented gain controls for easily repeatable settings and a custom security cover for tamper-proof installations. Active inrush limiting eliminates AC inrush current, cutting the need for power sequencers.

CX amplifiers also include an HD15 Data Port connector to interface with QSControl, QSC's computer-controlled audio system, that allowes remote amplifier monitoring and control via a standard Ethernet network.



FEATURES
8 models to meet your exact power requirements (five low impedance models, three 70 volt direct models)
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
Selectable high pass filters protect speakers and prevent speaker transformer saturation withminimal 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 are only 2 rack units high and 14" deep for reduced rack cost and floor space
Light weight - all models weigh 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 CX302 CX502 CX702 CX902 CX1102 CX302V CX602V CX1202V
  STEREO MODE, Both Channels Driven
8 ohms, 20 Hz-20 kHz, 0.05% THD 200 W 300 W 425 W 550 W 700 W - 550 W 700 W
4 ohms, 20 Hz-20 kHz, 0.05% THD 325 W 500 W 700 W 900 W 1100 W - - 1100 W
2 ohms, 1 kHz, 1% THD 600 W 800 W 1200 W 1500 W 1700 W - - -
70V, 20 Hz-20 kHz, 0.05% THD 400 W
(with IT-42*)
- - - - 200 W 400 W 800 W
70V, 1 kHz, 0.05% THD - - - - - 250 W 440 W 1000 W
70V, 1 kHz, 1% THD - - - - - 300 W 600 W 1200 W
  BRIDGED MONO MODE
16 ohms, 20 Hz-20 kHz, 0.1% THD 400 W 600 W 850 W 1100 W 1400 W - 1100 W 1400 W
8 ohms, 20 Hz-20 kHz, 0.1% THD 700 W 1100 W 1500 W 2000 W 2200 W - - 2200 W
4 ohms, 1 kHz, 1% THD 1200 W 1600 W 2400 W 3000 W 3400 W - - -
140V, 20 Hz-20 kHz, 0.05% THD - - - - - 400 W 800 W 1600 W
140V, 1 kHz, 0.05% THD - - - - - 500 W 880 W 2000 W
140V, 1 kHz, 1% THD - - - - - 600 W 1200 W 2400 W
Noise, 20 Hz-20 kHz >-107 dB >-107 dB >-106 dB >-106 dB >-106 dB >-106 dB >-106 dB >-106 dB
Input Sensitivity @ 8 ohms 1.26 Vrms 1.23 Vrms 1.16 Vrms 1.17 Vrms 1.35 Vrms 1.26 Vrms 1.26 Vrms 1.26 Vrms
Voltage Gain @ 8 ohms
30 dB 32 dB 34 dB 35 dB 35 dB 35 dB 35 dB 35 dB
Output Circuitry AB+B AB+B H, 2-tier H, 2-tier H, 2-tier AB+B AB+B H, 2-tier
  ALL MODELS
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 0.01% THD
Less than 0.01% THD
Frequency Response 20 Hz-20 kHz, +/- 0.2 dB
Damping Factor
Greater than 500
Input Impedance
6k ohms unbalanced, 12k ohms balanced
Input Clipping
10 Vrms (+22 dB)
Cooling
Variable-speed fan, rear-to-front air flow
Connectors, each channel

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, and RF protection.
Stable into reactive or mismatched loads.
Load Protection
On/Off muting, DC-fault power supply shutdown
Dimensions

19" (48.3 cm) wide, 3.5" (8.9 cm) tall (2 RU),
14" (35.6 cm) deep (from front mounting rails)
Weight
21 lbs (9.5 kg) net
27 lbs (12.3 kg) shipping
* An isolation transformer is available for the CX302, which converts its low-impedance outputs to isolated 400 W per channel constant-voltage outputs.

CURRENT CONSUMPTION (120V) CX302 CX502 CX702 CX902 CX1102 CX302V CX602V CX1202V
Idle current
(no audio program material)
  0.8A 0.9A 0.9A 0.9A 0.9A 0.8A 0.9A 0.9A
1/8 Power pink noise
(typical of program material at maximum unclipped or rarely clipping power)
8 ohms
4 ohms
2 ohms
70 volts
3.8A
6.0A
9.6A
-
5.6A
9.0A
14.0A
-
5.0A
7.9A
11.8A
-
6.0A
9.5A
14.0A
-
7.6A
11.6A
16.6A
-
-
-
-
5.7A
-
-
-
8.7A
-
-
-
12.0A
1/3 Power pink noise
(typical of program material with severe clipping)
8 ohms
4 ohms
2 ohms
70 volts
5.4A
8.9A
14.3A
-
8.0A
13.3
21.0A
-
8.4A
13.5A
22.0A
-
11.0A
17.0A
27.0A
-
13.1A
20.0A
30.4A
-
-
-
-
8.0A
-
-
-
13.0A
-
-
-
19.0A

THERMAL LOSSES (ALL MODELS)
  Idle 1/8 Power pink noise 1/3 Power pink noise Full Power (sine)
Model Load BTU/hr kcal/hr BTU/hr kcal/hr BTU/hr kcal/hr BTU/hr kcal/hr
CX302 8 ohms + 8 ohms
4 ohms + 4 ohms
2 ohms + 2 ohms
200
200
200
50
50
50
565
995
1740
145
250
440
720
1245
2255
180
315
570
715
1295
2425
180
325
610
CX502 8 ohms + 8 ohms
4 ohms + 4 ohms
2 ohms + 2 ohms
165
165
165
40
40
40
910
1570
2560
230
395
645
1130
1945
3470
285
490
875
1090
1875
3585
275
475
905
CX702 8 ohms + 8 ohms
4 ohms + 4 ohms
2 ohms + 2 ohms
200
200
200
50
50
50
790
1310
2255
200
330
570
1080
1910
3190
275
480
805
1245
2320
4610
315
585
1160
CX902 8 ohms + 8 ohms
4 ohms + 4 ohms
2 ohms + 2 ohms
220
220
220
55
55
55
900
1525
2305
225
385
580
1415
2560
4265
355
645
1075
1705
3070
5835
430
775
1470
CX1102 8 ohms + 8 ohms
4 ohms + 4 ohms
2 ohms + 2 ohms
225
225
225
57
57
57
1195
2135
3975
300
540
1000
1760
2335
5210
445
590
1315
2050
3755
NA
515
945
NA
CX302V 70 volts + 70 volts 200 50 1125 285 1295 325 1080 270
CX602V 70 volts + 70 volts 165 40 1785 450 2260 570 2055 520
CX1202V 70 volts + 70 volts 200 50 2175 550 2605 655 4230 1065
 


 
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