Qsc rmx 2450a power amp 750 watts/ch 4 ohm


The RMX2450a is perfectly suited for performing musicians and mobile entertainers.

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SKU: RMX2450A Categories: , ,



The RMXa Series is an update on a proven line of amplifiers line of amplifiers combining legendary QSC reliability, audio performance and affordability. Entertainers and touring users can continue to rely on the RMXa as one of the leading amplifier series in the world. For mid-power applications, the 2RU models offer 4Ω power ratings from 300 to 800 watts per channel. For premium loudspeaker systems with extremely high power capacity the 3RU models (RMX 4050a and RMX 5050a) are unchallenged.

With 800 W/CH into 4 ohms and 1200 W/CH into 2 ohms all in a chassis that is less than 16″ deep the RMX2450a is perfectly suited for performing musicians and mobile entertainers.


Power: 800 W/CH, 2400 W Bridged
Dimensions: 89mm x 482mm x 404mm (3.5” x 19” x 15.9”)
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 speaker
3-year warranty plus optional 3-year extended service contract


Stereo Mode (both channels driven) 450 W
8Ω/ FTC 20 Hz – 20 kHz / 0.1% THD 500 W
8Ω/ EIA 1 kHz / 0.1% THD 650 W
4Ω/ FTC 20 Hz – 20 kHz / 0.1% THD 750 W
4Ω/ EIA 1 kHz / 0.1% THD –
2Ω/ FTC 20 Hz – 20 kHz / 1% THD 1200 W
2Ω/ EIA 1 kHz / 1% THD
Bridge-Mono Mode 1300 W
8Ω/ FTC 20 Hz – 20 kHz / 0.1% THD 1500 W
8Ω/ EIA 1 kHz / 0.1% THD 2400 W
4Ω/ EIA 1 kHz / 1% THD
Signal to Noise (20 Hz – 20 kHz) 8Ω > -100 dB
Distortion (SMPTE-IM) < 0.02%
Input Sensitivity at 8Ω 1.23V (+4.0 dBu)
Voltage Gain 50x (34 dB)
Output Circuitry 2-tier Class H
Power Requirements 6.3 A
Typical, 1/8 power pink noise at 4Ω* 15.6 A
Severe, 1/3 power pink noise at 4Ω*
Supplied Plug Type, 100/120V NEMA 5-15
Supplied Plug Type, 230V CEE7/7
Weight 44.5 lb (20.2 kg)
Net 50.5 lb (23 kg)


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