QSC RMX1450 Power Amplifier (700 Watts)

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.

Features
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.

Technical Info

Stereo Mode (EIA: both channels driven)
8 ohms EIA 1 kHz 0.1% THD: 280W
4 ohms EIA 1 kHz 0.1% THD: 450W
2 ohms EIA 1 kHz 1% THD: 700W

Bridge Mono Mode
8 ohms EIA 1 kHz 0.1% THD: 900W
4 ohms EIA 1 kHz 1% THD: 1400W

Signal to Noise (20 Hz-20 kHz): 100dB

Distortion (SMPTE-IM): Less than 0.01%

Input Sensitivity @ 8 ohms: 1.12v (+3.4 dBu)

Voltage Gain: 40x (32 dB)

Output Circuitry: AB

Current Consumption (1/8 power pink noise at 4 ohms @ 120VAC,both channels driven; multiply current by .5 for 230V units.): 7A

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, ? 0/-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 (+22dBu)

Cooling: Continuously variable speed fan, rear-to-front air flow

Connectors (each channel): Input: Active balanced; barrier strip, XLR,and 1/4" (6.3 mm). 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: PWR-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: Turn-on/off muting, AC coupling (850, 1450), triac crowbar (2450, on each channel)

Power Requirements: 100, 120, 230 VAC, 50-60 Hz

Dimensions: rack mounting: 48.3cm (19"); 8.9cm (3.5") tall (2 rack spaces); 40cm (15.9") deep (rack mounting to rear support ears)

Net Weight: 18.2 kg (40 lbs.)

Note: Register your new product online with QSC and receive a Free 6-Year Extended Warranty upgrade (a $99 value).

Rebates

Steps up the output to 280 watts/channel at 8 ohms, 1,400 watts at 4 ohms bridged.