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 RMX 4050HD is optimized to deliver high levels of sustained power, extraordinary audio performance, and road-proven reliability.

Like its smaller sibling (the RMX 1850HD), the RMX 4050HD is one of two RMX “Heavy Duty” models designed to work as hard into 2-ohm loads as most competing amplifiers will at 4-ohms. With a three-tier, Class H design, the RMX 4050HD is extremely efficient at real world power levels. Less AC current is wasted and more goes into producing useful audio power. The RMX 4050HD accomplishes all this with a standard 10-Amp plug.

Like all RMX amps, the RMX 4050HD 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.

FEATURES

• The 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" 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
• Selectablelow-frequency filters (30 Hz or 50 Hz) protect speakers and increase headroom
• Balanced 1/4" (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. An optional 3-year extended service contract is available. Ask your dealer for details.

RMX 4050 SPECIFICATIONS:

• STEREO MODE, EIA: Both Channels Driven  
• 8 ohms FTC 1 kHz, 0.1% THD: 650W, 4 ohms FTC 1 kHz, 0.1% THD: 1300W, 2 ohms FTC 1 kHz, 1% THD: 1600W, 2 ohms EIA 1 kHz, 1% THD: 2000W,
• Brighde Mode: 8 ohms EIA 1 kHz, 0.1% THD: 2800W,  4 ohms EIA 1 kHz, 0.1% THD: 4000W
• Signal to Noise, 20 Hz-20 kHz: 100 dB
• Distortion (SMPTE-IM): Less than 0.02%
• Input Sensitivity @ 8 ohms: 1.15v (+3.4 dBu)
• Voltage Gain: 64 x (36 dB)
• Output Circuitry: Class H
• Weight: 68 lb (31 kg) net

• Distortion (Typical): 20 Hz-20 kHz: 10 dB below rated power & 1.0 kHz and below: full rated power: Less than 0.02% THD 4 & 0.01% THD 8 ohms
  Frequency Response:  20 Hz-20 kHz, +/- 1 dB, -3 dB points: 5 Hz-50 kHz
• Damping Factor, 1 kHz and below: Greater than 250 at 8 ohms
• Input Impedance: 10 k ohms unbalanced, 20 k ohms balanced
• Input Clipping: 10 Vrms (+22 dB)
• Cooling: Continuously variable-speed fan, rear-to-front air flow
• XLR female, TRS (1/4-inch), and barrier-strip screw terminals, each channel Binding posts and Speakon outputs (Ch. 1 Speakon wired for biamp)
• Controls: Front: AC switch, Ch. 1 and Ch. 2 gain knobs, 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.
• Indicators: Power-On: Green LED, Signal: Yellow LED (1 per channel), Clip: Red LED (1 per channel)
• Amplifier Protection: Stable into reactive or mismatched loads
• Load Protection: On/off muting, AC coupling (850, 1450), triac crowbar (1850HD, 2450, on each channel)
• Dimensions: 19" 19.0" (48.3 cm) wide, 5.20" (13.2 cm) tall, 15.9" (40.39 cm) overall depth
• Power Requirements: 100, 120, 230 VAC, 50-60 Hz

 
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