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    QSC RMX 4050HD Professional Power Amplifier, 2000 Watts

    800 watts per channel at 8 ohms in stereo mode. Capable of 2-ohm operation.

    This product has been discontinued or is no longer sold by SameDayMusic.

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    QSC RMX 4050a Power Amplifier



    The QSC RMX 4050a Power Amplifier is a heavy duty amp designed for mid-size to large systems and works as hard into 2 ohm loads as most competing amps will at 4 ohms. > More

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    Product Rated 9.6 Out of 10 (27 ratings)

    QSC RMX4050HD Power Amplifier Product Description

    QSC's RMX 4050HD power amplifier represents the state of the art in professional-quality performance at an affordable price. Perfectly suited for a wide range of sound reinforcement applications including professional touring, performing musicians, and mobile DJs, the RMX4050HD is optimized to deliver high levels of sustained power, extraordinary audio performance, and road-proven reliability.

    Like its smaller sibling (the RMX 1850HD), the QSC RMX 4050HD is 1 of 2 RMX "Heavy Duty" models designed to work as hard into 2-ohm loads as most competing amplifiers will at 4-ohms. With a 3-tier, Class H design, the RMX4050HD is extremely efficient at real world power levels. Less AC current is wasted and more goes into producing useful audio power. The QSC RMX 4050HD accomplishes all this with a standard 15-Amp plug.

    Like all RMX amps, the QSC RMX 4050HD features balanced 1/4 in. TRS, XLR and barrier strip inputs, binding posts and Neutrik Speakon outputs, front-mounted gain controls, plus signal and clip LED indicators to monitor performance.

    The QSC RMX 4050HD provides improved thermal performance that gives you higher continuous power in 2-ohms stereo or 4-ohms bridged applications


    - Dual mono, high current power supply for increased reliability and performance
    - 3RU chassis only 16 in. deep
    - Professional quality performance--incorporates road-proven QSC designs
    - High-current toroidal transformers for greater 2-ohm power and low noise
    - Independent user-defeatable clip limiters reduce distortion
    - Selectable low-frequency filters (30 Hz or 50 Hz) protect speakers and increase headroom
    - Balanced 1/4 in. (6.3 mm) TRS, XLR, and barrier strip inputs
    - Binding post and Neutrik Speakon outputs
    - Front mounted gain controls for easy access
    - Signal and Clip LED indicators to monitor performance
    - 3-year warranty

    Same Day Music is an authorized dealer of QSC products.

    QSC RMX 4050HD Technical Description

    Output Power Wattage:
    Stereo Mode, Both Channels Driven Continuous, Per Channel:
    8 ohms FTC 20 Hz-20 kHz 0.1% THD: 800 Watts
    4 ohms FTC 20 Hz-20 kHz 0.1% THD: 1300 Watts
    2 ohms FTC 20 Hz-20 kHz 0.1% THD: 1600 Watts
    8 ohms EIC 1 kHz 0.1% THD: 850 Watts
    4 ohms EIC 1 kHz 0.1% THD: 1400 Watts
    2 ohms EIC 1 kHz 1% THD: 2000 Watts

    Bridge-Mono Mode Operation:
    8 ohms FTC 20 Hz-20 kHz 0.1% THD: 2600 Watts
    8 ohms EIA 1 kHz 0.1% THD: 2800 Watts
    4 ohms EIA 1 kHz 1% THD: 4000 Watts

    Distortion (SMPTE-IM): Less than 0.02%

    Distortion (Typical)
    20 Hz-20 kHz: 10 dB below rated power: Less than 0.02% 4 ohm, less than 0.01% 8 ohms
    1 kHz and below: full rated power: Less than 0.02% 4 ohm, less than 0.01% 8 ohms

    Frequency Response:
    20 Hz to 20 kHz, 8 ohms, LF filter bypassed, +0/-1 dB
    5 Hz to 50 kHz, 8 ohms, LF filter bypassed, +0/-3 dB

    Damping Factor: Greater than 250 @ 8 ohm

    Noise (unweighted): 100 dB below rated output (20 Hz to 20 kHz, 8 ohm load)

    Input Sensitivity: 1.25 Vrms for 800 watts into 8 ohms

    Controls Front: AC power switch, Ch. 1 and Ch. 2 gain control

    Controls Rear: 10-pole DIP switch featuring LF filter on/off, LF filter 30/50 Hz, Clip Limiter on/off controls for each channel and switches for selecting Stereo, Parallel, or Bridge mode. Push-button circuit breaker for each channel.

    Voltage Gain: 64x (36 dB) for 8 ohm load

    Input Impedance: 20 k ohm balanced, 10 k ohm unbalanced

    Power-On: Green LED, Protect: Red LED
    Signal -30dB: Yellow LED, Clip: Red LED

    Connectors Input: XLR female, TRS (1/4 in.), and barrier-strip screw terminals, each channel

    Connectors Output: Binding posts and Speakon outputs (Ch. 1 Speakon wired for biamp)

    Cooling: Continuously variable-speed fan, rear-to-front air flow

    Amplifier Protection: Short circuit, open circuit, thermal, ultrasonic, and RF protection. Stable into reactive or mismatched loads

    Load Protection: On/off muting, DC fault output crowbar

    Power Requirements: 100, 120 or 240 Volts AC (+/-10%) 50-60 Hz (factory configured)

    Dimensions W x H x D: 19 x 5.25 x 15.9 in. (48.3 x 13.3 x 40.39 cm)

    Weight: 68 lbs. (30.84 kg) net, 77 lbs. (34.43 kg) shipping

    Note: Specifications subject to change without notice.

    Note: Register your new product online with QSC and receive a Free 6-Year Extended Warranty upgrade (a $99 value).

    Same Day Music is an authorized dealer of QSC products.

    QSC RMX4050HD Power Amplifier Catalog Description

    Reliable, clean, dynamic QSC power@Flat frequency response and super-low distortion@Defeatable clip limiters on each channel; switchable low-cut filter@Variable-speed fans with rear-to-front air flow@800 watts per side at 8 ohms; 4000 watts at 4 ohms bridged mono@Barrier strip, XLR, and 1/4" inputs; Speakon and binding post outputs

    Same Day Music is an authorized dealer of QSC products.

    User Reviews for QSC RMX4050HD Power Amplifier

    Product Rated 9.6 Out of 10 (27 ratings)
    • "Price, Power, Professional. You can't go wrong with the qsc4050HD" - Read More
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