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QSC RMX 5050

1600w Per Channel @ 4 ohms Power Amplifier

Product Code 21259

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QSC's RMX 5050 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 entertainers, the RMX 5050 is optimized to deliver high levels of sustained power, extraordinary audio performance and road-proven reliability.

Like its smaller sibling (the RMX 4050HD), the RMX 5050 features a three-tier, Class H design. The RMX 5050 is extremely efficient at real world power levels. Less AC current is wasted and more goes into producing useful audio power. The RMX 5050 uses the best available component upgrades to increase peak power by 25% over the RMX 4050HD.

Like all RMX amps, the RMX 5050 features balanced 1/4" 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 new flagship of the RMX line, the RMX 5050 provides extremely high power and represents tremendous value

The RMX 5050 provides advanced thermal performance, delivering 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" deep

Professional quality performance—incorporates road-proven QSC designs

High-current toroidal transformers for greater two-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" (6.3 mm) TRS, XLR, and barrier strip inputs for maximum flexibility

Binding post and Neutrik Speakon™ outputs

Front mounted gain controls for easy access

Signal and Clip LED indicators to monitor performance

3-year warranty. An optional 3-year extended service contract is available.
Ask your dealer for details.

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MPN: RMX5050

STEREO MODE, Both Channels Driven

8 ohms FTC 20 Hz-20 kHz 0.1% THD 1050 Watts
4 ohms FTC 20 Hz-20 kHz 0.1% THD 1600 Watts
2 ohms FTC 20 Hz-20 kHz 0.1% THD 2000 Watts
8 ohms EIA 1 kHz 0.1% THD 1100 Watts
4 ohms EIA 1 kHz 0.1% THD 1800 Watts
2 ohms EIA 1 kHz 1% THD 2500 Watts


8 ohms FTC 20 Hz-20 kHz 0.1% THD 3200 Watts
8 ohms EIA 1 kHz 0.1% THD 3600 Watts
4 ohms EIA 1 kHz 1% THD 5000 Watts
Distortion (SMPTE-IM) Less than 0.02%
Distortion (Typical)
20 Hz-20 kHz: 10 dB below rated power
1 kHz and below: full rated power
Less than 0.02%
Less than 0.02%
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 1.42 Vrms for 1050 watts into 8 ohms
Controls Front:
Controls Rear:

AC power switch, Ch. 1 and Ch. 2 gain control
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:
Connectors Output: XLR female, TRS (1/4-inch), and barrier-strip screw terminals, each channel
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)120V models require 20 Amp, 120V service and are supplied with a NEMA 5-20 plug on the cordset.
Dimensions 19" 19.0" (48.3 cm) wide, 5.25" (13.3 cm) tall, 15.9" (40.39 cm) overall depth
Weight 75 lb (34.02 kg) net, 87 lb (39.46 kg) shipping
All Specification Subject to Change Without Notice.


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