



QSC RMX850a Power Amplifier (300 W per Channel)
Model: RMX850A








| Package Weight | 36.4 lb |
|---|---|
| Box Dimensions (LxWxH) | 24.0 x 22.0 x 6.0" |
| Distortion | SMPTE-IM: For 8 and 4 Ω load THD for 20 to 20,000 Hz at 10 dB below rated power: less than 0.03% THD for 1,000 Hz at full rated power: less than 0.03% |
|---|---|
| Input Sensitivity | 1.15 V (+3.4 dBU) at 8 Ω |
| Voltage Gain | 31.6x (30 dB) |
| Circuit Type | Class AB |
| Power Consumption | 4.5 A 1/8 power pink noise at 4Ω 6.6 A |
| Damping Factor | > 300 at 8Ω |
| Input Impedance | 10 kΩ balanced 20 kΩ unbalanced |
| Frequency Response | 20 to 20,000 Hz +0/-1 dB -3 dB points 5 Hz to 50,000 Hz (LF filter bypassed/8 Ω) |
| Input Connections | Active balanced 3-pin Euro-style detachable terminal block 2 x 3-pin XLR 2 x 1/4" TRS |
| Cooling | Continuously variable speed fan, back-to-front airflow |
| Power Rating | Stereo mode (both channels driven) 8 Ω FTC 20 to 20,000 Hz at 0.1% THD: 185 W 8 Ω EIA 1,000 Hz at 0.1% THD: 200 W 4 Ω FTC 20 to 20,000 Hz at 0.1% THD: 280 W 4 Ω EIA 1,000 Hz at 0.1% THD: 300 W 2 Ω EIA 1,000 Hz at 0.1% THD: 430 W Bridge-mono mode 8 Ω FTC 20 to 20,000 Hz at 0.1% THD: 530 WBridge-mono mode 8 Ω EIA 1,000 Hz at 0.1% THD: 600 W Bridge-mono mode 4 Ω EIA 1,000 Hz at 0.1% THD: 830 W |
| Controls Front Panel | AC switch Channel 1 gain knob Channel 2 gain knob |
| Controls Rear Panel | 10-position DIP switch |
| Indicators | Power-on: green LED Signal: yellow LED (1 per channel) Clip: red LED (1 per channel) Protect: red LED (1 per channel) |
| Power Requirements | 100, 120, 230 VAC at 50 to 60 Hz (factory configured) |
| Protection | Amplifier: Full short circuit, open circuit, thermal, ultrasonic, RF protection. Stable into reactive or mismatched loads Load: Turn-on/off muting/AC coupling (850, 1450)/ Triac Crowbar (1050HD, 2450, 4050HD, 5050) on each channel |
| Rack Spaces | 2 |
| Plug Type | 100/120V: NEMA 5-15 230V: CEE7/7 |
| Dimensions (H x W x D) | 3.5 x 19.0 x 15.9" (89.0 x 482 x 404 mm) |
| Weight | 35.0 lb (15.9 kg) |
| Output Connectors | Touch-proof binding posts 2 x Neutrik Speakon |
| Signal-to-Noise Ratio | > -100 dB |