QSC RMX1450A
Professional quality performance, incorporating road-proven QSC designs
Features
- Compact size up to 2500 watts in two rack spaces, or 5000 watts in three 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
- The 4000-watt RMX4050a operates on a standard 15 amp plug (120 V)
- Both the RMX4050a and the RMX5050a feature a dual mono, high-current power supply for increased reliability and performance
- The RMX4050a's particularly exceptional combination of cooling capacity and electrical efficiency provides robust thermal performance suitable for high continuous power in 2-ohm stereo or 4-ohm bridged applications.
- Balanced 1/4-inch (6.3 mm) TRS, XLR, and barrier strip inputs
- Touch-proof binding post and Neutrik SpeakonŽ outputs
- Front mounted gain controls for easy access
- Signal and clip LED indicators for monitoring performance
- Independent DC and thermal overload protection on each channel automatically protects amplifier and speakers
- 3-year warranty plus optional 3-year extended service contract
Specifications
Model | RMX 850a | RMX 1450a | RMX 2450a | RMX 4050a | RMX 5050a |
Power per Channel, Stereo Mode (both channels driven) | |||||
8, FTC 20 Hz20 kHz, 0.1% THD | 185 W | 260 W | 450 W | 800 (650**) W | 1050 W |
8, EIA 1 kHz, 0.1% THD | 200 W | 300 W | 500 W | 850 W | 1100 W |
4, FTC 20 Hz20 kHz, 0.1% THD | 280 W | 400 W | 650 W | 1300 W | 1600 W |
4, EIA 1 kHz, 0.1% THD | 300 W | 500 W (0.5% tdD) | 800 W | 1400 W | 1800 W |
2, FTC 20 Hz20 kHz, 1% THD | 1600 W | 2000 W | |||
2, EIA 1 kHz, 1% THD | 430 W | 700 W | 1200 W | 2000 W | 2500 W |
Power, Bridge-Mono Mode | |||||
8, FTC 20 Hz20 kHz, 0.1% THD | 530 W | 800 W | 1300 W | 2600 W | 3200 W |
8, EIA 1 kHz, 0.1% THD | 600 W | 900 W | 1500 W | 2800 W | 3600 W |
4, EIA 1 kHz, 1% THD | 830 W | 1400 W | 2400 W | 4000 W | 5000 W |
100 V Direct Drive, EIA 1 kHz, 1% THD | 600 W | 2300 W | |||
Signal to Noise (20 Hz20 kHz) | -100 dB | ||||
Distortion (SMPTE-IM) | < 0.01% | < 0.02% | |||
Input Sensitivity at 8 | 1.15V (+3.4dBu) | 1.23V | 1.42V (+5.3 dBu) | ||
Voltage Gain | 31.6x (30 dB) | 40x (32 dB) | 50x (34 dB) | 64x (36 dB) | |
Output Circuitry | Class AB | 2-tier Class H | 3-tier Class H | ||
Current Draw (120 V AC) |
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AC Mains Plug | NEMA 5-15 |
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Distortion (typical) |
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Frequency Response | 20 Hz20 kHz: +0/-1 dB -3 dB points: 5 Hz and 50 kHz (LF filter bypassed, 8) | ||||
Damping Factor (1 kHz and below) | > 300 at 8 | > 250 at 8 | |||
Input Impedance | 10 k unbalanced; 20 k balanced | ||||
Input Stage Clipping | 10 V rms (+22 dBu) | 6.4 V rms (+18 dBu) | |||
Cooling | Continuously variable speed fan, back-to-front air flow | ||||
Connectors (each channel) | Input: Active balanced; 3-pin Euro-style detachable terminal block and XLR (pin 2+) | ||||
Controls | Front: AC switch; Channel 1 & 2 gain knobs | ||||
LED Indicators | Power on: Green; Signal: Yellow (1 per channel); Clip/Protect: Red (1 per channel) | ||||
Amplifier Protection | Full short circuit, open circuit, tdermal, ultrasonic, RF protection. Stable into reactive or mismatched loads | ||||
Load Protection | Turn-on/off muting; AC coupling (850, 1450); Triac crowbar (1850HD, 2450, 4050HD, 5050) on each channel | ||||
Product Dimensions (H×W×D) | 89 (2 RU) × 482 × 404 mm | 132 (3 RU) × 482 × 404 mm | |||
Carton Dimensions (H×W×D) | 610 × 560 × 153 mm | 610 × 560 × 229 mm | |||
Net Weight | 15.9 kg / 35 lb | 18.2 kg / 40 lb | 20.2 kg / 44.5 lb | 30.8 kg / 68 lb | 33.1 kg / 75 lb |
Shipping Weight | 18.6 kg / 41 lb | 20.9 kg / 46 lb | 23 kg / 50.5 lb | 34.9 kg / 77 lb | 37.6 kg / 87 lb |
Power Requirements | 100, 120, 230 V AC (factory configured), 5060 Hz | ||||