QSC RMX4050a 2000W Professional Low-Z Power Amplifier

QSC RMX4050a 2000W Professional Low-Z Power Amplifier

QSC RMX4050a 2000W Professional Low-Z Power Amplifier

B&H # QSRMX4050A MFR # RMX4050A
QSC RMX4050a 2000W Professional Low-Z Power Amplifier

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Product Highlights

  • 850W per Channel at 8Ω
  • 1400W per Channel at 4Ω
  • 2000W per Channel at 2Ω
  • Independent User-Defeatable Limiters
  • Selectable 30 and 50 Hz Low Pass Filters
  • Signal and Clip LED Indicators
  • 2800W Bridged at 8Ω
  • 3RU
  • Less than 16" Deep
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  • 1Description
The QSC RMX4050a 2000W Professional Low-Z Power Amplifier is a 3RU unit designed for high power live sound reinforcement applications. The amplifier features both XLR and 1/4" balanced inputs as well as Speakon and touch-proof binding post output connectors. The integrated user-defeatable clip limiters and selectable low-frequency filters allow you to adjust the amplifier to your application.

The amplifier is rated at 850W per channel at 8Ω from 20 to 20,000 Hz, 1400W per channel at 4Ω from 20 to 20,000 Hz, 2000W per channel at 2Ω from 20 to 20,000 Hz, and 2800W in bridge mono mode at 8Ω from 20 to 20,000 Hz.

This unit is less than 16" deep and features a three-tier Class H output circuit design for efficient power management. As a result, less AC current is wasted and more available current is utilized for amplification.
2000W amplifier features a dual mono, high-current power supply for increased reliability and performance
Improved thermal performance yielding higher continuous power in 2Ω stereo or 4Ω bridged applications
Compact 3RU size
High-current toroidal transformers for increased 2Ω power and lower noise
Independent user-defeatable clip limiters reduce distortion
Selectable low-frequency filters (30 or 50 Hz) protect speakers and increase headroom
Balanced 1/4" (6.3mm) TRS, XLR, and barrier strip inputs
Touch-proof binding post and Neutrik Speakon outputs
Front mounted gain controls for easy access
Signal and Clip LED indicators for performance monitoring
Independent DC and thermal overload protection on each channel automatically protects amplifier and speakers
4000W amplifier operates on a standard 15A plug (120V)
UPC: 684284062864
In the Box
QSC RMX4050a 2000W Professional Low-Z Power Amplifier
  • Adhesive Rubber Feet (For Non-Rack Mount Applications)
  • Rear Rack Ear Mounting Kit
  • IEC-Type Detachable Power Cord
  • Limited 3-Year Warranty, Extendable to 6 Years With Registration
  • Table of Contents
    • 1Description
    Connectors Input (active balanced): 2 x 3-pin Euro-style detachable terminal block
    2 x 3-Pin XLR (pin 2+)

    Output: 2 x touch-proof binding posts
    2 x Neutrik Speakon connectors
    Stereo FTC Power 8Ω / FTC 20 to 20,000 Hz / 0.1% THD: 800 W (650 W @ 1 1.0 kHz sine wave, 1% THD, 1 channel driven)
    8Ω / EIA 1,000 Hz / 0.1% THD: 850 W
    4Ω / FTC 20 to 20,000 Hz / 0.1% THD: 1300 W
    4Ω / EIA 1,000 Hz / 0.1% THD: 1400 W
    2Ω / FTC 20 to 20,000 Hz / 1% THD: 1600 W
    2Ω / EIA 1,000 Hz / 1% THD: 2000 W
    Bridge 8Ω / FTC 20 to 20,000 Hz / 0.1% THD: 2600 W
    8Ω / EIA 1 kHz / 0.1% THD: 2800 W
    4Ω / EIA 1 kHz / 1% THD: 4000 W
    Signal to Noise Ratio > - 100 dB (20 to 20,000 Hz at 8 Ω)
    Distortion SMPTE-M: < 0.02%
    Typical: 20 Hz to 20 kHz 10 dB below rated power < 0.02% THD / 4 Ω and 8 Ω
    1.0 kHz and below full rated power 0.02% THD / 4 Ω and 8 Ω
    Input Sensitivity @ 8 ohms 1.42 V (5.3 dBu)
    Voltage Gain 64x (36 dB)
    Output Circuit 3-tier Class H
    Power Requirements Typical, 1/8 Power Pink Noise at 4Ω: 10.0 A
    Severe, 1/3 Power Pink Noise at 4Ω: 20.1 A
    Plug Type Supplied: NEMA 5-15 (100 / 120 V)
    CEE7/7 (230 V)
    Frequency Response 20 Hz to 20 kHz: 0/-1 dB
    -3 dB Points: 5 Hz and 50 kHz (LF filter bypassed / 8 Ω)
    Damping Factor > 250 at 8Ω (1,000 Hz and below)
    Input Impedance 10 kΩ unbalanced / 20 kΩ balanced
    Input Clipping Level 6.4 Vrms (+18 dBu)
    Cooling Continuously variable speed fan, back-to-front air flow
    Controls Front: AC switch / channel 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
    Protection Amplifier: Stable into reactive or mismatched loads
    Load: On/off muting, Triac crowbar on each channel
    Current Consumption @ 120 V


    Typical: 14.5 A, Full: 30.6 A, Maximum: 65.7 A


    Typical: 10.0 A, Full: 20.1 A, Maximum: 42.2 A


    Typical: 6.4 A, Full: 12.5 A, Maximum: 25.5 A
    Power Requirement 100, 120, 230 VAC, 50 to 60 Hz (factory configured)
    Dimensions (H x W x D) 5.2 x 19.0 x 15.9" (132.0 x 483.0 x 404.0 mm)
    Weight 68.0 lb (30.8 kg)
    Packaging Info
    Package Weight 79.8 lb
    Box Dimensions (LxWxH) 23.858 x 21.811 x 8.189"

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