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collapse expand iconDescription

The RMXa Series amplifiers from QSC offer true professional-quality performance at an affordable price. The 2-rackspace model RMX2450a features output power of 450 watts per channel at 8 ohms. It has 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 amplifiers are among the most reliable products in pro audio. It takes some real effort to blow these things up. The RMX design has had a long time to be tested in the marketplace and the results are in. This amp is a beast. Long hours, long roads, hot environments, indoors, outdoors, you name it. The RMX amps are among the best built, most reliable power sources you will find.
Open Box QSC RMX2450a Power Amplifier Level 1
Open Box QSC RMX2450a Power Amplifier Level 1
Open Box QSC RMX2450a Power Amplifier Level 1

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: 450W
  • 8Î/ EIA 1 kHz / 0.1% THD: 500W
  • 4Î/ FTC 20 Hz - 20 kHz / 0.1% THD: 650W
  • 4Î/ EIA 1 kHz / 0.1% THD: 750W
  • 2Î/ FTC 20 Hz - 20 kHz / 1% THD: --
  • 2Î/ EIA 1 kHz / 1% THD: 1200W
Bridge-Mono Mode
  • 8Î/ FTC 20 Hz - 20 kHz / 0.1% THD: 1300W
  • 8Î/ EIA 1 kHz / 0.1% THD: 1500W
  • 4Î/ EIA 1 kHz / 1% THD: 2400
  • Signal to Noise (20 - 20 kHz) 8Î: > -100 dB
  • Distortion (SMPTE-IM): <0.02%
  • Input Sensitivity at 8Î: 1.23V (+4.0 dBu)
  • Voltage Gain: 50X (34dB)
  • Output Circuitry: 2-tier Class H
  • Power Requirements: 6.3A
  • Typical, 1/8 power pink noise at 4Î*: 15.6A
  • Supplied Plug Type, 100/120V: NEMA 5-15
  • Supplied Plug Type, 230V: CEE7/7
  • Weight: 44.5lb
  • 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: 10 Vrms (+22 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: 3.5" (8.9 cm) tall / 2 rack spaces
  • Power Requirements: 100, 120, 230 VAC, 50 - 60 Hz (factory configured)

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