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QSC CMX 500V

QSC CMX 500V

The QSC CMX500Va 700W Professional Power Amplifier is a 2 RU power amplifier designed for live sound reinforcement applications such as for performance halls, houses of worship, sports clubs, gymnasiums, dance venues, pubs, and more. The amplifier uses a powerful, high-current toroidal transformer with filtering to ensure sufficient energy reserves, allowing the amplifier to handle high-level transients, even when driving 2-Ohm speaker loads.

The output section features a Class AB architecture, which reduces AC current draw and cuts down on unnecessary heat. Automatic current limiting protects the amplifier from damage until the short is corrected. It also features DC protection systems to prevent loudspeaker damage in the unlikely event of an output transistor failure. DC voltage from the power supply is never passed directly to your speakers, even in case of an output circuit breakdown.

A full complementary output circuit using high-grade linear output devices generates a flat-frequency response with low distortion. SMT (Surface Mount Technology) triples small-signal component density, enabling high power output in a 2 RU chassis, less than 16" deep. The output devices are directly mounted to the heat sink to improve thermal coupling and cooling.

The unit can directly drive 70 and/or 100V distributed loudspeakers in mono mode. For installations requiring a transformer isolated output, the CMX has optional accessories to accommodate different applications. The QSC CMX500Va ships with a power cord and a security plate.

More Information

Key Features

  • 260W per Channel at 8 Ohms
  • 1400W Bridged at 4 Ohms
  • Drives Loads as Low as 2 Ohms
  • Drives 70 and 100V Distribution Systems
  • Barrier Strip, XLR, and 1/4" TRS Inputs
  • NL4 speakON and Terminal Block Outputs
  • Security Cover for Gain Controls
  • Stereo, Parallel, and Bridged Mono Mode
  • Low-Frequency Filter Protection
  • Low-Noise Variable-Speed Fans

Technical Specification

 

QSC CMXa Specs
Number of Channels 2
Power Rating 8 Ohms:
260 W per Channel (Full Range, 0.1% THD)
300 W per Channel (1 kHz, 0.1% THD)
800 W Bridged (Full Range, 0.1% THD)
900 W Bridged (1 kHz, 0.1% THD)
4 Ohms:
400 W per Channel (Full Range, 0.1% THD)
500 W per Channel (1 kHz, 0.5% THD)
1400 W Bridged (1 kHz, 1% THD)
2 Ohms:
700 W per Channel (1 kHz, 1% THD)
70 V:
1200 W Bridged (1 kHz, 1% THD)
100 V:
600 W Bridged (1 kHz, 1% THD)
Amplifier Class Class-AB
Performance
Protections AC Coupling, On/Off Muting, Reactive/Mismatched Load
Frequency Response 20 Hz to 20 kHz ±1 dB
5 Hz to 50 kHz (-3 dB)
Damping Factor > 300 at 8 Ohms
Input Sensitivity 1.14 V / 3.4 dBu (at 8 Ohms)
Input Impedance 10 Kilohms (Unbalanced)
20 Kilohms (Balanced)
Max Gain 32 dB (at 8 Ohms)
Max Input Level +22 dB / 10 Vrms
SNR > -100 dB (at 8 Ohms)
THD 4 / 8 Ohms:
< 0.03% (Full Range, at Rated Power -10 dB)
< 0.03% (1 kHz, at Rated Power)
Intermodulation Distortion < 0.01% (SMPTE)
Connectivity
Analog Audio I/O 1 x Barrier Strip 5-Pin Input
2 x XLR Balanced Input
2 x 1/4" TRS Balanced Input
1 x Block 6-Pin Output
2 x speakON Output
Power
AC Input Power 120 VAC, 50 / 60 Hz
230 VAC, 50 / 60 Hz
Current Consumption 120 VAC, 4 Ohms:
5.4 A (Typical, 1/8 Power)
9.6 (Severe, 1/3 Power)
230 VAC, 4 Ohms:
2.7 A (Typical, 1/8 Power)
4.8 (Severe, 1/3 Power)
Physical
Display & Indicators Green LED (Power)
Green LED (Signal, per Channel)
Red LED (Clip, per Channel)
Cooling Fan (Variable Speed)
Dimensions 3.5 x 19.0 x 15.9" / 8.9 x 48.3 x 40.0 cm
Weight 40 lb / 18.2 kg
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