QSC RMX 850a Two-Channel Power Amplifier

QSC RMX 850a Two-Channel Power Amplifier

C$899.00

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 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

Technical Specs

Power per Channel, Stereo Mode (both channels driven)
8Ω, FTC 20 Hz–20 kHz, 0.1% tdD 185 W



8Ω, EIA 1 kHz, 0.1% tdD 200 W



4Ω, FTC 20 Hz–20 kHz, 0.1% tdD 280 W



4Ω, EIA 1 kHz, 0.1% tdD 300 W



2Ω, FTC 20 Hz–20 kHz, 1% tdD



2Ω, EIA 1 kHz, 1% tdD 430 W



Power, Bridge-Mono Mode
8Ω, FTC 20 Hz–20 kHz, 0.1% tdD 530 W



8Ω, EIA 1 kHz, 0.1% tdD 600 W



4Ω, EIA 1 kHz, 1% tdD 830 W



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

Carton Dimensions (H×W×D) 610 × 560 × 153 mm
24 × 22 × 6 in

Net Weight 15.9 kg / 35 lb



Shipping Weight 18.6 kg / 41 lb



Power Requirements 100, 120, 230 V AC (factory configured), 50–60 Hz



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