QSC RMX4050HD
4000W @ 4 Ohms Bridged Mono Power Amplifier

RMX4050HD

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 15-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 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" (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.

Power, Stereo Mode (both channels driven)

• 8 ohms / FTC 20 Hz - 20 kHz / 0.1% THD: 800W
• 8 ohms / EIA 1 kHz / 0.1% THD: 850W
• 4 ohms / FTC 20 Hz - 20 kHz / 0.1% THD: 1300W
• 4 ohms / EIA 1 kHz / 0.1% THD: 1400W
• 2 ohms / FTC 20 Hz - 20 kHz / 1% THD: 1600W
• 2 ohms / EIA 1 kHz / 1% THD: 2000W

Power, Bridged Mono Mode

• 8 ohms / FTC 20 Hz - 20 kHz / 0.1% THD: 2600W
• 8 ohms / EIA 1 kHz / 0.1% THD: 2800W
• 4 ohms / EIA 1 kHz / 1% THD: 4000W

Specifications

• Signal to Noise (20Hz-20kHz) 8 ohms: >-100dB
• Distortion (SMPTE-IM): <0.02%
• Input Sensitivity at 8 ohms: 1.25V (+4.1 dBu)
• Voltage Gain: 64x (36dB)
• Output Circuitry: Class H, 3-tier
• Power Requirements:
  Typical, 1/8 power pink noise at 4 ohms: 10.0 A
  Severe, 1/3 power pink noise at 4 ohms: 20.1 A
• Supplied Plug Type, 100/120V: NEMA 5-15
• Weight:
  Net: 68 lbs
  Shipping: 77 lbs
• Distortion (typical)
  20 Hz - 20 kHz: 10 dB below rated power: <0.02% THD/4 and 8 ohms
  1.0 kHz and below: full rated power: <0.02% THD/4 and 8 ohms
• Frequency Response: 20 Hz - 20 kHz: +0/-1 dB -3 dB points: 5 Hz and 50 kHz (LF filter bybassed / 8 ohms)
• Damping Factor (1 kHz and below): >250 at 8 ohms
• 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+)
  Output: Touch-proof binding posts/Neutrik Speakon
• 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: Triac Crowbar on each channel
• Dimensions: 5.25" tall/3 rack spaces
• Power Requirements: 100, 120, 230 VAC, 50-60Hz (factory configured)

Our Part #  RMX4050HD