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QSC CMX300Va Contractor Power Amplifier - 2 Channel - 430W - 2RU
  • QSC CMX300Va Contractor Power Amplifier - 2 Channel - 430W - 2RU
  • QSC CMX300Va Contractor Power Amplifier - 2 Channel - 430W - 2RU
  • QSC CMX300Va Contractor Power Amplifier - 2 Channel - 430W - 2RU
  • QSC CMX300Va Contractor Power Amplifier - 2 Channel - 430W - 2RU
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QSC CMX300Va Contractor Power Amplifier - 2 Channel - 430W - 2RU

Manufacturer: QSC

Item #: QSC-CMX300VA   •   MFG #: CMX300VA


Our Price:$645.00

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Availability: In Stock
Item is Available for immediate shipping from our warehouse.

    California Residents:
    Cancer and Reproductive Harm -


    The New CMXa Series is an economical and rugged power amplifier designed to meet the needs of system integrators. It is based upon the proven, rock-solid, reliable performance found in the award winning RMX Series. The CMXa feature sets are designed for wide-ranging application in facilities such as performance halls, houses of worship, sports clubs, gymnasiums, dance venues, pubs, and FGM/BGM systems. The CMXa Series provides unmatched performance, the right power for the job and an affordable price point.

    Proven and Reliable Power Plant

    CMXa amplifiers incorporate everything QSC has learned in more than forty years of striving to deliver worry-free perations without failures. The design of these amplifiers starts with our world-class power supplies. The CMXa uses a powerful, high-current toroidal transformer and filtering to ensure generous energy reserves. This allows the amplifiers to effortlessly handle high-level transients, even when driving abusive 2 ohm speaker loads.

    The amplifier output sections feature rugged class AB and class H architecture depending on power level. Efficient class H output sections on the CMX 800Va and CMX 2000Va reduce AC current draw and cut down on waste heat.

    All CMXa amplifiers are protected from damage from shorted outputs. Automatic current limiting protects the amplifier from damage until the short is corrected.

    CMXa amplifiers also feature 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 the event of an output circuit failure.

    Superior Performance

    The CMXa amplifiers deliver true and accurate studio-quality sound. A full complementary output circuit using high-grade linear output devices generates accurate, flat-frequency response with low distortion. SMT (Surface Mount Technology) triples small-signal component density, enabling high power output in a 2 rack unit chassis (3 RU for the CMX 2000Va). Unlike other designs, CMXa output devices are directly mounted to the heat sink for optimum thermal coupling and cooling.

    The CMXa Series is available in four models. Three 2-rackspace models range in power from 300 to 800 watts per channel at 4 ohms. One 3-rackspace model provides 2500 watts per channel at 2 ohms. All four models feature a compact chassis less than 16" deep.

    The V in the model name designates the ability to directly drive 70-volt and/or 100-volt distributed loudspeakers. The CMX 300Va and CMX 500Va must be configured for bridged-mono operation in order to directly drive high-impedance systems while the CMX 800Va and 2000Va may be used in either stereo or mono mode.

    • Features

      • "Flex-Use" loading options allow you to drive low-impedance loads down to 2 ohms and certain models to drive 70 and 100V distributed loudspeaker systems
      • "Flex-Use" Input connectivity choices including actively balanced barrier strip, XLR, or 1/4" TRS
      • "Flex-Use" Output connectivity choices include NL4 SpeakonT and detachable terminal block
      • Rack mountable with chassis less than 16" or 40.6 mm deep
      • 1 dB recessed, detented gain controls for fast, accurate and repeatable settings
      • Tamper-proof security cover for gain controls
      • Recessed rear DIP switches for easy selection of stereo, parallel, or bridged mode operation, and the additional choice of enabling/disabling low frequency filter protection
      • Low-noise variable-speed fans with rear-to-front airflow keep amplifiers and racks cool
    • Specifications

      • Stereo Mode (both channels driven):
      • - 8O FTC 0.1% THD: 185W
      • - 8O EIA 0.1% THD: 200W
      • - 4O FTC 0.1% THD: 280W
      • - 4O EIA 0.5% THD: 300W
      • - 2O EIA 1% THD: 430W
      • Signal to Noise (20 Hz-20 kHz, 8O): > 100 dB
      • Input Sensitivity into 8O: 1.15 V (+3.4 dBu)
      • Max Voltage Gain: 31.6x (30 dB)
      • Current Draw (pink noise program):
      • - Typical, 1/8 power 4O, 120 V: 4.4A
      • - Typical, 1/8 power 4O, 230 V: 2.2A
      • - Severe, 1/3 power 4O, 120 V: 6.6A
      • - Severe, 1/3 power 4O, 230 V: 3.3A
      • Distortion (SMPTE-IM): < 0.02%
      • Distortion (typical):
      • - 20 Hz-20 kHz: 10 dB below rated power: < 0.03% THD / 4O and 8O
      • - 1.0 kHz and below: full rated power: < 0.03% THD / 4O and 8O
      • Frequency Response: 20 Hz-20 kHz: ±1 dB; -3 dB points: 5 Hz and 50 kHz
      • Damping Factor (1 kHz and below): > 300 at 8O
      • Input Impedance: 10 kO unbalanced, 20 kO balanced
      • Input Clipping: 10 V rms (+22 dBu)
      • Cooling: Continuously variable-speed fan, rear-to-front air flow
      • Connectors (each channel):
      • - Input: Active balanced; barrier strip, XLR and 1/4"" (6.3 mm) - TRS tip and XLR pin 2 positive
      • - Output: Detachable terminal block and Neutrik Speakon
      • Controls:
      • - Front: AC switch, Channels 1 & 2 gain knobs
      • - Rear: 10-position DIP switch
      • Indicators: Power-on: Green LED / Signal: Green LED (1 per channel) / Clip: Red LED (1 per channel)
      • Amplifier Protection: Stable into reactive or mismatched loads
      • Load Protection: On/off muting, AC coupling (CMX 300Va and CMX 500Va), triac crowbar (CMX 800Va and CMX 2000Va on each channel)
      • Power Requirements: 120 or 230 VAC, 50 - 60 Hz
      • Net Weight: 35 lb
      • Shipping Weight:41lb
    • GTIN:


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