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Model Options:
QSC RMX2450 Power AmplifierQSC 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. The new RMX Series amplifiers give you clean, dynamic power with the legendary QSC sound quality and reliability that pros depend on. We combined our rugged high output designs with the latest circuit technology to deliver unmatched performance at a new breakthrough price.
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) & 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 & less than 16" deep. And unlike other designs, RMX output devices are direct-mounted to the heat sink for optimum thermal coupling & cooling.
Comprehensive Features
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" 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.
RMX SPECIFICATIONS
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RMX SPECIFICATIONS |
RMX 850 |
RMX 1450 |
RMX 2450 |
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Stereo Mode (EIA: both channels driven) |
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8 ohms EIA 1 kHz 0.1% THD |
200W |
280W |
500W |
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4 ohms EIA 1 kHz 0.1% THD |
300W |
450W |
750W |
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2 ohms EIA 1 kHz 1% THD |
430W |
700W |
1200W |
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Bridge Mono Mode |
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8 ohms EIA 1 kHz 0.1% THD |
600W |
900W |
1500W |
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4 ohms EIA 1 kHz 1% THD |
830W |
1400W |
2400W |
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Signal to Noise (20 Hz-20 kHz) |
100 dB |
100 dB |
100 dB |
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Distortion (SMPTE-IM) |
Less than 0.01% |
Less than 0.01% |
Less than 0.02% |
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Input Sensitivity @ 8 ohms |
1.15v (+3.4 dBu) |
1.15v (+3.4 dBu) |
1.23v (+4.0 dBu) |
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Voltage Gain |
31.6x (30 dB) |
40x (32 dB) |
50x (34 dB) |
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Output Circuitry |
AB |
AB |
Class H |
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Current Consumption (1/8 power pink noise at 4 ohms @ 120VAC,
both channels driven; multiply current by .5 for 230V units.) |
5A |
7A |
10A |
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Weight (Net) |
35lb. (15.9 kg) |
40lb. (18.2 kg) |
44.5lb. (20.2 kg) |
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All Models |
All Models |
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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 |
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Frequency Response |
20 Hz-20 kHz, ± 0/-1 dB, -3 dB points: 5 Hz-50 kHz |
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Damping Factor (1 kHz and below) |
Greater than 300 at 8 ohms |
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Input Impedance |
10 K ohms unbalanced, 20 K ohms balanced |
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Input Clipping |
10 Vrms (+22dBu) |
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Cooling |
Continuously variable speed fan, rear-to-front air flow |
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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 |
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Controls |
Front: AC switch, Ch.1 and Ch.2 gain knobs
Rear: 10-position DIP switch |
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Indicators |
PWR-ON: Green LED SIGNAL: Yellow LED (1 per channel)
CLIP: Red LED (1 per channel) |
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Amplifier Protection |
Full short circuit, open circuit, thermal, ultrasonic, & RF protection.
Stable into reactive or mismatched loads. |
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Load Protection |
Turn-on/off muting, AC coupling (850, 1450), triac crowbar
(2450, on each channel) |
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Dimensions |
19" (48.3cm) rack mounting, 3.5" (8.9 cm) tall (2 rack spaces),
15.9" (40 cm) deep (rack mounting to rear support ears) |
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Power Requirements |
100, 120, 230 VAC, 50-60 Hz |
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