QSC Rmx1450 Power Amp

QSC RMX series amplifiers give you clean, dynamic power with QSC's legendary sound quality and reliability that pros depend on. QSC combined their rugged, high-output designs with the latest circuit technology to deliver unmatched performance at a new breakthrough price. RMX amps have balanced XLR and 1/4" TRS inputs. Outputs include binding posts and Neutrik Speakon connections. These stereo power amps are only 2 rack spaces tall and 15.9" deep. Other features include ultra low distortion (.05% THD), a low-noise variable speed fan with rear-to-front air flow to keep your amplifier and racks cool, and selectable low-frequency filters to protect your speakers and increase headroom. QSC power amps are backed by a 3-year transferable warranty.

Muscular Power Plant

The power supply is the heart of anamplifier, converting raw AC power from the wall to clean DC for theaudio circuitry. The RMX uses a powerful high-current toroidaltransformer and ample filter capacitance to ensure generous energyreserves. This makes a critical difference in sound quality, allowingthe amp to effortlessly punch out high level transients, even whendriving abusive 2 ohm speaker loads.

Superior Performance

RMX amplifiers deliver true studio-quality sound. A full complementaryoutput circuit using the highest-grade linear output devices deliversultra-low distortion (<0.05% THD) and a ruler-flat frequencyresponse. SMT (Surface Mount Technology) triples small-signal componentdensity, enabling us to pack up to 2400 watts of power in a chassisonly 2 rack spaces and less than 16" deep. And unlike other designs,RMX output devices are direct-mounted to the heat sink for optimumthermal coupling and cooling.

Comprehensive Features

The RMX Series is packed full of professional features that increase performance and flexibility:

• The RMX 1850HD provides improved thermalperformance that gives you higher continuous power in 2 ohms stereo or4 ohms bridged applications (a RMX 1850HD exclusive!)
• Independent defeatable clip limiters reduce distortion without sacrificing peak performance.
• Selectablelow-frequency filters boost system response, protect speakers andensure low-end tightness by more precisely matching the amplifier'srange 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

Withover 30 years of building amplifiers for the largest touring companiesand venues around the world, you can count on QSC's reputation fordesigning the most reliable amps available.

FEATURES

• Compact size - up to 2400 watts in 2 rack spaces
• Professional quality performance - incorporates road-proven QSC designs
• High-current toroidal transformers for greater two-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" (6.3mm) 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
• Independent DC and thermal overload protection on each channel automatically protects amplifier and speakers
• 3-year warranty plus optional 3-year extended service contract
   

SPECIFICATIONS	RMX 1450
	STEREO MODE (Both Channels Driven)
8 ohms
FTC 20 Hz - 20 kHz, 0.1% THD	260 W
EIA 1 kHz, 0.1% THD	280 W
4 ohms
FTC 20 Hz - 20 kHz, 0.1% THD	400 W
EIA 1 kHz, 0.1% THD	450 W
2 ohms	700 W
EIA 1 kHz, 1% THD
	BRIDGE MONO MODE
8 ohms
FTC 20 Hz - 20 kHz, 0.1% THD	800 W
EIA 1 kHz, 0.1% THD	900 W
4 ohms	1400 W
EIA 1 kHz, 1% THD
Signal to Noise, 20 Hz-20 kHz	100 dB
Distortion (SMPTE-IM)	Less than 0.01%
Input Sensitivity @ 8 ohms	1.15V (+3.4 dBu)
Voltage Gain	40x (32 dB)
Output Circuitry	AB
Power Requirements	6A
1/8 power pink noise at 4 ohms *
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	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
* @ 120VAC, both channels driven; multiply current by 0.5 for 230V units