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Item # J01724

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QSC RMX4050a Power Amplifier
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      QSC RMX4050a Power Amplifier (J01724)
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Mail in Rebate

RECEIVE UP TO $150 BY MAIL WITH A QSC PREPAID REWARD CARD ON PLX2, RMX & RMXa SERIES. See PDF for details.

Click here to download rebate ››

Big power in a small size.

The RMXa Series amplifiers from QSC offer true professional-quality performance at an affordable price. The 3-rackspace RMX4050a provides 2000 watts per channel at 2 ohms. It features a compact chassis less than 16” deep. RMXa amplifiers include a comprehensive set of features including XLR and 1/4” balanced inputs, Speakon® and binding post outposts for convenient connectivity. User-defeatable clip limiters and selectable low-frequency filters optimize sonic performance.

The RMX 4050a is a “heavy duty” model designed to work as hard into 2 ohm loads as most competing amplifiers will at 4 ohms. It features a three-tier, Class H design that is extremely efficient at real world power levels. Less AC current is wasted and more available current goes into producing useful audio power. 120 volt versions of the RMX4050a accomplish all this with a standard 15 amp plug.

QSC RMX4050a Power Amplifier Features:

  • Compact size
    High-current toroidal transformers
    Independent user-defeatable clip limiters
    Selectable low-frequency
    Balanced 1/4” (6.3 mm) TRS, XLR, and barrier strip inputs
    Touch-proof binding post and Neutrik Speakon® outputs
    Independent DC and thermal overload protection


QSC RMX4050a Power Amplifier Specifications:

  • Stereo Mode (both channels driven):
    8O/ FTC 20 Hz – 20 kHz / 0.1% THD: 800W
    8O/ EIA 1 kHz / 0.1% THD: 850W
    4O/ FTC 20 Hz – 20 kHz / 0.1% THD: 1300W
    4O/ EIA 1 kHz / 0.1% THD: 1400W
    2O/ FTC 20 Hz – 20 kHz / 1% THD: 1600W
    2O/ EIA 1 kHz / 1% THD: 2000W
    Bridge-Mono Mode
    8O/ FTC 20 Hz – 20 kHz / 0.1% THD: 2600W
    8O/ EIA 1 kHz / 0.1% THD: 2800W
    4O/ EIA 1 kHz / 1% THD: 4000W
    Signal to Noise (20 – 20 kHz) 8O: > -100 dB
    Distortion (SMPTE-IM): <0.02%
    Input Sensitivity at 8O: 1.42V (+5.3 dBu)
    Voltage Gain: 64X (36dB)
    Output Circuitry: 3-tier Class H
    Power Requirements: 10A
    Typical, 1/8 power pink noise at 4O*: 20.1A
    Supplied Plug Type, 100/120V: NEMA 5-15
    Supplied Plug Type, 230V: CEE7/7
    Weight: 68lb
    Frequency Response : 20 Hz – 20 kHz: +0/-1 dB -3 dB points: 5 Hz and 50 kHz (LF filter bypassed / 8O)Damping Factor (1 kHz and below)
    Input Impedance: 10K ohms unbalanced, 20K ohms balanced
    Input Clipping: 6.4 Vrms (+18 dBu)
    Cooling: Continuously variable speed fan, back-to-front air flow
    Connectors (each channel): Input: Active balanced / 3-pin Euro-style detachable terminal block and XLR (pin 2+)
    Controls: Front: AC switch / Ch. 1 & 2 gain knobs
    Rear: 10-position DIP switch
    Indicators: Power-on: Green LED / Signal: Yellow LED (1 per channel) / Clip: Red LED (1 per channel) " Protect: Red LED
    Amplifier Protection: Full short circuit, open circuit, thermal, ultrasonic, RF protection. Stable into reactive or mismatched loads
    Load Protection: Turn-on/off muting / AC coupling (850, 1450) / Triac crowbar (1850HD, 2450, 4050HD, 5050) on each channel
    Dimensions: 5.25” tall / 3 rack spaces
    Power Requirements: 100, 120, 230 VAC, 50 – 60 Hz (factory configured)






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