QSC CMX300Va 430W Professional Power Amplifier (2RU)

QSC CMX300Va 430W Professional Power Amplifier (2RU)

QSC CMX300Va 430W Professional Power Amplifier (2RU)

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QSC CMX300VA overview

  • 1Description

The CMX300Va 430W Professional Power Amplifier from QSC is a 2RU rugged unit designed to meet the needs of system integrators. This amplifier is used in facilities such as performance halls, houses of worship, sports clubs, gymnasiums, dance venues, pubs, and FGM/BGM systems. 

The amplifier uses a powerful, high-current toroidal transformer with filtering to ensure generous energy reserves. This allows the amplifier to effortlessly handle high-level transients, even when driving rigorous 2Ω speaker loads. 

The amplifier output sections feature rugged class AB architecture. 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. 

This CMXa amplifier delivers 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 RU chassis, less than 16" deep. Unlike other designs, CMXa output devices are directly mounted to the heat sink for optimum thermal coupling and cooling. 

The unit has the ability to directly drive 70 and/or 100V distributed loudspeakers. The CMX 300Va must be configured for bridged-mono operation in order to directly drive high-impedance systems. For installations requiring a transformer isolated output, the CMX has optional accessories to cover your needs.

Flex-use loading options can drive low-impedance loads down to 2Ω and even 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 Speakon and detachable terminal block
Rack mountable chassis less than 16" deep
1 dB recessed, detented gain control provides 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 prevent amplifiers and racks from overheating
Used in facilities such as performance halls, houses of worship, sports clubs, gymnasiums, dance venues, pubs, and FGM/BGM systems
UPC: 684284062932
In the Box
QSC CMX300Va 430W Professional Power Amplifier (2RU)
  • Limited 3-Year Warranty
  • Table of Contents
    • 1Description

    QSC CMX300VA specs

    Watts 430 W @ 1 kHz, 1% THD
    Stereo FTC Power 8 Ω / FTC 20 Hz to 20 kHz / 0.1% THD: 185 W
    8 Ω / EIA 1 kHz / 0.1% THD: 200 W
    4 Ω / FTC 20 Hz to 20 kHz / 0.1% THD: 280 W
    4 Ω / EIA 1 kHz / 0.5% THD: 300 W
    2 Ω / EIA 1 kHz / 1% THD: 430 W
    Bridge 8 Ω / FTC 20 Hz to 20 kHz / 0.1% THD: 530 W
    8 Ω / EIA 1 kHz / 0.1% THD: 600 W
    4 Ω / EIA 1 kHz / 1% THD: 830 W
    70 V Direct Drive / EIA 1 kHz / 1% THD: 600 W
    Signal to Noise Ratio > - 100 dB (20 Hz to 20 kHz, 8Ω)
    Input Sensitivity @ 8 ohms 1.15 V (3.4 dBu)
    Voltage Gain At 8 Ω 31.6 x (30 dB)
    Output Circuit Class AB
    Power Requirements Typical, 1/8 Power Pink Noise at 4 Ω, 120 VAC: 4.4 A
    Typical, 1/8 Power Pink Noise at 4 Ω, 230 VAC: 2.2 A
    Severe, 1/3 Power Pink Noise at 4 Ω, 120 VAC: 6.6 A
    Severe, 1/3 Power Pink Noise at 4 Ω, 230 VAC: 3.3 A
    Distortion SMPTE-M: < 0.02%
    Typical: 20 Hz to 20 kHz 10 dB below rated power < 0.03% THD / 4 Ω and 8 Ω
    1.0 kHz and below full-rated power <0.03% THD / 4 Ω and 8 Ω
    Frequency Response 20 Hz to 20 kHz: ±1 dB
    -3 dB Points: 5 Hz to 50 kHz
    Damping Factor > 300 at 8 Ω (1 kHz and below)
    Input Impedance 10 kΩ unbalanced, 20 kΩ balanced
    Input Clipping Level 10 VRMS (+22 dB)
    Cooling Continuously variable-speed fan, rear-to-front air flow
    Connectors Input: Active balanced; barrier strip, XLR and 1/4" (6.3 mm) to TRS tip and XLR pin 2 positive
    Output: Detachable terminal block and Neutrik Speakon
    Controls Front: AC switch, channel 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)
    Protection Amplifier: Stable into reactive or mismatched loads
    Load: On/off muting, AC coupling
    Power Requirement 120 and 230 VAC, 50 to 60 Hz
    Dimensions (H x W x D) 3.5 x 19.0 x 15.9" (8.9 x 48.3 x 40.0 cm)
    Weight 35.0 lb (15.9 kg)
    Packaging Infovaqsawwawfcfvwavetywdrbtarrfubyyt
    Package Weight 37.5 lb
    Box Dimensions (LxWxH) 24.0 x 22.0 x 6.0"

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