Description
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 Speakon® 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
Please see manufacturer’s product page for more information HERE.
Model | RMX850a |
| Power per Channel, Stereo Mode (both channels driven) | |
| 8Ω, FTC 20 Hz–20 kHz, 0.1% THD | 185 W |
| 8Ω, EIA 1 kHz, 0.1% THD | 200 W |
| 4Ω, FTC 20 Hz–20 kHz, 0.1% THD | 280 W |
| 4Ω, EIA 1 kHz, 0.1% THD | 300 W |
| 2Ω, FTC 20 Hz–20 kHz, 1% THD | – |
| 2Ω, EIA 1 kHz, 1% THD | 430 W |
| Power, Bridge-Mono Mode | |
| 8Ω, FTC 20 Hz–20 kHz, 0.1% THD | 530 W |
| 8Ω, EIA 1 kHz, 0.1% THD | 600 W |
| 4Ω, EIA 1 kHz, 1% THD | 830 W |
| 100 V Direct Drive, EIA 1 kHz, 1% THD | – |
| Signal to Noise (20 Hz–20 kHz) | -100 dB |
| Distortion (SMPTE-IM) | < 0.01% |
| Input Sensitivity at 8Ω | 1.15V (+3.4dBu) |
| Voltage Gain | 31.6x (30 dB) |
| Output Circuitry | Class AB |
| 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 |
| AC Mains Plug 100/120V 230V | NEMA 5-15 CEE7/7 |
| 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 |
| 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 |
| Input Impedance | 10 kΩ unbalanced; 20 kΩ balanced |
| Input Stage Clipping | 10 V rms (+22 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® |
| Controls | Front: AC switch; Channel 1 & 2 gain knobs Rear: 10-position DIP switch |
| 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 |
| Net Weight | 15.9 kg / 35 lb |
| Power Requirements | 100, 120, 230 V AC (factory configured), 50–60 Hz |
