Muscular Power Plant
The power supply is the heart of an amplifier, converting raw AC power from the wall to clean DC for the audio circuitry. The RMX uses a powerful high-current toroidal transformer and ample filter capacitance to ensure generous energy reserves. This makes a critical difference in sound quality, allowing the amp to effortlessly punch out high level transients, even when driving abusive 2 ohm speaker loads.

Superior Performance
RMX amplifiers deliver true studio-quality sound. A full complementary output circuit using the highest-grade linear output devices delivers ultra-low distortion (<0.05% THD) and a ruler-flat frequency response. SMT (Surface Mount Technology) triples small-signal component density, enabling us to pack up to 2400 watts of power in a chassis only 2 rack spaces and less than 16" deep. And unlike other designs, RMX output devices are direct-mounted to the heat sink for optimum thermal coupling and cooling.

Comprehensive Features
The RMX Series is packed full of professional features that increase performance and flexibility:
The RMX 1850HD provides improved thermal performance that gives you higher continuous power in 2 ohms stereo or 4 ohms bridged applications (a RMX 1850HD exclusive!)
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" 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.

FEATURES:

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• SPECIFICATIONS	RMX 850	RMX 1450	RMX 1850HD	RMX 2450
  	STEREO MODE (Both Channels Driven)
  8 ohms   FTC 20 Hz - 20 kHz, 0.1% THD   EIA 1 kHz, 0.1% THD	185 W 200 W	260 W 280 W	350 W 360 W	450 W 500 W
  4 ohms   FTC 20 Hz - 20 kHz, 0.1% THD   EIA 1 kHz, 0.1% THD	280 W 300 W	400 W 450 W	550 W 600 W	650 W 750 W
  2 ohms    EIA 1 kHz, 1% THD	430 W	700 W	900 W	1200 W
  	BRIDGE MONO MODE
  8 ohms   FTC 20 Hz - 20 kHz, 0.1% THD   EIA 1 kHz, 0.1% THD	530 W 600 W	800 W 900 W	1100 W 1200 W	1300 W 1500 W
  4 ohms    EIA 1 kHz, 1% THD	830 W	1400 W	1800 W	2400 W
  Signal to Noise, 20 Hz-20 kHz	100 dB	100 dB	100 dB	100 dB
  Distortion (SMPTE-IM)	Less than 0.01%	Less than 0.01%	Less than 0.02%	Less than 0.02%
  Input Sensitivity @ 8 ohms	1.15V (+3.4 dBu)	1.15V (+3.4 dBu)	1.16V (+3.5 dBu)	1.23V (+4.0 dBu)
  Voltage Gain	31.6x (30 dB)	40x (32 dB)	46x (33 dB)	50x (34 dB)
  Output Circuitry	AB	AB	Class H	Class H
  Power Requirements 1/8 power pink noise at 4 ohms *	5A	6A	6A	7A
  	ALL MODELS
  Distortion (Typical)   20 Hz - 20 kHz: 10 dB below rated power   1.0 kHz and below: full rated power	Less than 0.03% THD, 4 and 8 ohms 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	10k ohms unbalanced, 20k 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" (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	Stable into reactive or mismatched loads
  Load Protection	On/off muting, AC coupling (850, 1450), triac crowbar (1850HD, 2450, on each channel)
  Power Requirements	100, 120, 230 VAC, 50-60 Hz
  Dimensions	19" (48.3 cm) rack mounting, 3.5" (8.9 cm) tall (2 RU), 15.9" (40 cm) deep (rack mounting to rear support ears)
  Weight	35 lbs (15.9 kg) net	40 lbs (18.2 kg) net	44.5 lbs (20.2 kg) net	44.5 lbs (20.2 kg) net

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