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QSC

collapse expand iconDescription

The RMXa Series amplifiers from QSC offer true professional-quality performance at an affordable price. The 3-rackspace RMX4050a provides 2000 watts per channel at 2 ohms. It features a compact chassis less than 16" deep. RMXa amplifiers include a comprehensive set of features including XLR and 1/4" balanced inputs, Speakon and binding post outposts for convenient connectivity. User-defeatable clip limiters and selectable low-frequency filters optimize sonic performance.

The RMX 4050a is a "heavy duty" model designed to work as hard into 2 ohm loads as most competing amplifiers will at 4 ohms. It features a three-tier, Class H design that is extremely efficient at real world power levels. Less AC current is wasted and more available current goes into producing useful audio power. 120 volt versions of the RMX4050a accomplish all this with a standard 15 amp plug.
QSC RMX4050a Power Amplifier

collapse expand iconFeatures

  • Compact size
  • High-current toroidal transformers
  • Independent user-defeatable clip limiters
  • Selectable low-frequency
  • Balanced 1/4" (6.3 mm) TRS, XLR, and barrier strip inputs
  • Touch-proof binding post and Neutrik Speakon outputs
  • Independent DC and thermal overload protection

collapse expand iconSpecs

  • Stereo Mode (both channels driven):
  • 8Î/ FTC 20 Hz - 20 kHz / 0.1% THD: 800W
  • 8Î/ EIA 1 kHz / 0.1% THD: 850W
  • 4Î/ FTC 20 Hz - 20 kHz / 0.1% THD: 1300W
  • 4Î/ EIA 1 kHz / 0.1% THD: 1400W
  • 2Î/ FTC 20 Hz - 20 kHz / 1% THD: 1600W
  • 2Î/ EIA 1 kHz / 1% THD: 2000W
  • Bridge-Mono Mode
  • 8Î/ FTC 20 Hz - 20 kHz / 0.1% THD: 2600W
  • 8Î/ EIA 1 kHz / 0.1% THD: 2800W
  • 4Î/ EIA 1 kHz / 1% THD: 4000W
  • Signal to Noise (20 - 20 kHz) 8Î: > -100 dB
  • Distortion (SMPTE-IM): <0.02%
  • Input Sensitivity at 8Î: 1.42V (+5.3 dBu)
  • Voltage Gain: 64X (36dB)
  • Output Circuitry: 3-tier Class H
  • Power Requirements: 10A
  • Typical, 1/8 power pink noise at 4Î*: 20.1A
  • Supplied Plug Type, 100/120V: NEMA 5-15
  • Supplied Plug Type, 230V: CEE7/7
  • Weight: 68lb
  • Frequency Response : 20 Hz - 20 kHz: +0/-1 dB -3 dB points: 5 Hz and 50 kHz (LF filter bypassed / 8Î)Damping Factor (1 kHz and below)
  • 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+)
  • 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: Turn-on/off muting / AC coupling (850, 1450) / Triac crowbar (1850HD, 2450, 4050HD, 5050) on each channel
  • Dimensions: 5.25" tall / 3 rack spaces
  • Power Requirements: 100, 120, 230 VAC, 50 - 60 Hz (factory configured)