QSC RMX2450a 2 channels, 500 watts/ch at 8Ω, 750 watts/ch at 4Ω, 1200 watts/ch at 2Ω

Professional quality performance—incorporates road-proven QSC designs

• The 4000 watt RMX 4050a operates on a standard 15 amp plug (120V)
• Both the RMX 4050a and RMX 5050a feature a dual mono, high-current power supply for increased reliability and performance
  
• The RMX 4050a provides improved thermal performance yielding higher continuous power in 2 ohm stereo or 4 ohm bridged applications.
  
• Compact size — up to 2500 watts in 2 rack spaces or 5000 watts in 3 rack

spaces

• 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
  
• Touch-proof binding post and Neutrik Speakon® outputs
  
• Front mounted gain controls for easy access
  
• Signal and Clip LED indicators to monitor performance
  
• Independent DC and thermal overload protection on each channel automatically protects amplifier and speakers
• RMX Series Features
  
• The RMX Series is packed full of professional features that increase performance and flexibility:
  
• Independent defeatable clip limiters reduce distortion without sacrificing peak performance.
  
• Selectable low-frequency filters boost system response, protect speakers and ensure low-end tightness by more precisely matching the amplifier's range to the loudspeakers.
  
• Barrier strip, XLR, and 1/4 in. balanced inputs plus Speakon and binding post outputs provide easy connections.
  
• Low-noise variable speed fans with rear-to-front air flow keep amplifiers and racks cool.
  
• Proven Reliability
  
• With over 30 years of building amplifiers for the largest touring companies and venues around the world, you can count on QSC's reputation for designing the most reliable amps available.

Specifications

Continuous Power Rating

• 8 Ohms: 500 W
  
• 4 Ohms: 750 W
  
• 2 Ohms: 1200 W
  
• 8 Ohms Bridged Mono: 1500 W
  
• 4 Ohms Bridged Mono: 2400 W
  
• Current Consumption: 10 Amps
  Distortion (Typical): 20 Hz-20 kHz: 10 dB below rated power Less than 0.03% THD 4 and 8 ohms 1.0 kHz and below: full rated power Less than 0.03% THD 4 and 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 300 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
  

Connectors, each channel

• Input: Active balanced; barrier strip, XLR and 1/4 in. (6.3mm) TRS tip and XLR pin 2 positive
  
• Output: touch-proof binding posts and Neutrik Speakon
  

Controls

• Front: AC switch, Ch. 1 and Ch. 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
  

Amplifier Protection:

• Full short circuit, open circuit, thermal, ultrasonic, and RF protection
  
• Stable into reactive or mismatched loads
  
• Load Protection: On/off muting, AC coupling (850, 1450), triac crowbar (2450, on each channel)