QSC RMX 1450
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RMX 1450
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.
SPECIFICATIONS |
RMX 1450 | |||
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STEREO MODE (Both Channels Driven) | ||||
8 ohms FTC 20 Hz - 20 kHz, 0.1% THD EIA 1 kHz, 0.1% THD |
260 W 280 W |
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4 ohms FTC 20 Hz - 20 kHz, 0.1% THD EIA 1 kHz, 0.1% THD |
400 W 450 W |
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2 ohms EIA 1 kHz, 1% THD |
700 W |
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BRIDGE MONO MODE | ||||
8 ohms FTC 20 Hz - 20 kHz, 0.1% THD EIA 1 kHz, 0.1% THD |
800 W 900 W |
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4 ohms EIA 1 kHz, 1% THD |
1400 W |
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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 1/8 power pink noise at 4 ohms * |
6A | |||
ALL MODELS | ||||
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, ±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 | |||
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® |
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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 | Power-On: Green LED Signal: Yellow LED (1 per channel) Clip: Red LED (1 per channel) |
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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) |