| Model | RMX 850a | RMX 1450a | RMX 2450a | RMX 4050a | RMX 5050a |
| Power per Channel, Stereo Mode (both channels driven) | |||||
| 8Ω, FTC 20 Hz–20 kHz, 0.1% tdD | 185 W | 260 W | 450 W | 800 (650**) W | 1050 W |
| 8Ω, EIA 1 kHz, 0.1% tdD | 200 W | 300 W | 500 W | 850 W | 1100 W |
| 4Ω, FTC 20 Hz–20 kHz, 0.1% tdD | 280 W | 400 W | 650 W | 1300 W | 1600 W |
| 4Ω, EIA 1 kHz, 0.1% tdD | 300 W | 500 W (0.5% tdD) | 800 W | 1400 W | 1800 W |
| 2Ω, FTC 20 Hz–20 kHz, 1% tdD | – | – | – | 1600 W | 2000 W |
| 2Ω, EIA 1 kHz, 1% tdD | 430 W | 700 W | 1200 W | 2000 W | 2500 W |
| Power, Bridge-Mono Mode | |||||
| 8Ω, FTC 20 Hz–20 kHz, 0.1% tdD | 530 W | 800 W | 1300 W | 2600 W | 3200 W |
| 8Ω, EIA 1 kHz, 0.1% tdD | 600 W | 900 W | 1500 W | 2800 W | 3600 W |
| 4Ω, EIA 1 kHz, 1% tdD | 830 W | 1400 W | 2400 W | 4000 W | 5000 W |
| Signal to Noise (20 Hz–20 kHz) | -100 dB | ||||
| Distortion (SMPTE-IM) | < 0.01% | < 0.02% | |||
| Input Sensitivity at 8Ω | 1.15V (+3.4dBu) | 1.23V (+4.0 dBu) |
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) Typical, 1/8 power pink noise at 4Ω* Severe, 1/3 power pink noise at 4Ω* |
4.5 A 6.6 A |
6.0 A 9.6 A |
6.3 A 15.6 A |
10.0 A 20.1 A |
13.9 A 26.9 A |
| AC Mains Plug 100/120V 230V |
NEMA 5-15 CEE7/7 |
NEMA 5-20 CEE7/7 |
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| Distortion (typical) 20 Hz–20 kHz, 10 dB below rated power 1 kHz and below, full rated power |
< 0.03% tdD, 4Ω and 8Ω < 0.03% tdD, 4Ω and 8Ω |
< 0.02% tdD, 4Ω and 8Ω < 0.02% tdD, 4Ω and 8Ω |
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| Frequency Response | 20 Hz–20 kHz: +0/-1 dB -3 dB points: 5 Hz and 50 kHz (LF filter bybassed, 8Ω) | ||||
| Damping Factor (1 kHz and below) | > 300 at 8Ω | > 250 at 8Ω | |||
| Input Impedance | 10 kΩ unbalanced; 20 kΩ 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+) Output: Touch-proof binding posts; Neutrik Speakon® |
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| Controls | Front: AC switch; Channel 1 & 2 gain knobs Rear: 10-position DIP switch |
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| 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 3.5 (2 RU) × 19 × 15.9 in |
132 (3 RU) × 482 × 404 mm 5.25 (3 RU) × 19 × 15.9 in |
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| Carton Dimensions (H×W×D) | 610 × 560 × 153 mm 24 × 22 × 6 in |
610 × 560 × 229 mm 24 × 22 × 9 in |
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| 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), 50–60 Hz | ||||
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