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.
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 in. deep. And unlike other designs, RMX output devices are direct-mounted to the heat sink for optimum thermal coupling and cooling.
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.
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.
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
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
Front: AC switch, Ch. 1 and Ch. 2 gain knobs
Rear: 10-position DIP switch
Power On: Green LED
Signal: Yellow LED, 1 per channel
Clip: Red LED, 1 per channel
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)