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QSC RMX4050a 2-Channel Power Amplifier - 850W/ch at 8 Ohms

QSC RMX4050a 2-Channel Power Amplifier - 850W/ch at 8 Ohms
 
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Product Code : RMX4050A
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DESCRIPTION SPECIFICATIONS
 

QSC RMX4050a 2-Channel Power Amplifier - 850W/ch at 8 Ohms

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 (120V)
  • 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” (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
ModelRMX 850aRMX 1450aRMX 2450aRMX 4050aRMX 5050a
Power per Channel, Stereo Mode (both channels driven)
8Ω, FTC 20 Hz–20 kHz, 0.1% tdD185 W260 W450 W800 (650**) W1050 W
8Ω, EIA 1 kHz, 0.1% tdD200 W300 W500 W850 W1100 W
4Ω, FTC 20 Hz–20 kHz, 0.1% tdD280 W400 W650 W1300 W1600 W
4Ω, EIA 1 kHz, 0.1% tdD300 W500 W (0.5% tdD)800 W1400 W1800 W
2Ω, FTC 20 Hz–20 kHz, 1% tdD–––1600 W2000 W
2Ω, EIA 1 kHz, 1% tdD430 W700 W1200 W2000 W2500 W
Power, Bridge-Mono Mode
8Ω, FTC 20 Hz–20 kHz, 0.1% tdD530 W800 W1300 W2600 W3200 W
8Ω, EIA 1 kHz, 0.1% tdD600 W900 W1500 W2800 W3600 W
4Ω, EIA 1 kHz, 1% tdD830 W1400 W2400 W4000 W5000 W
Signal to Noise (20 Hz–20 kHz)-100 dB
Distortion (SMPTE-IM)< 0.01%< 0.02%
Input Sensitivity at 8Ω1.15V (+3.4dBu)1.23V
(+4.0 dBu)		1.42V (+5.3 dBu)
Voltage Gain31.6x (30 dB)40x (32 dB)50x (34 dB)64x (36 dB)
Output CircuitryClass AB2-tier Class H3-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
Weight
Net
Shipping
35 lb (15.9 kg)
41 lb (18.6 kg)
40 lb (18.2 kg)
46 lb (20.9 kg)
44.5 lb (20.2 kg)
50.5 lb (23 kg)
68 lb (30.8 kg)
77 lb (34.9 kg)
75 lb (33.1 kg)
87 lb (37.2 kg)
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
Frequency Response20 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 Impedance10 kΩ unbalanced; 20 kΩ balanced
Input Stage Clipping10 V rms (+22 dBu)6.4 V rms (+18 dBu)
CoolingContinuously 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®
ControlsFront: AC switch; Channel 1 & 2 gain knobs
Rear: 10-position DIP switch
LED IndicatorsPower on: Green; Signal: Yellow (1 per channel); Clip/Protect: Red (1 per channel)
Amplifier ProtectionFull short circuit, open circuit, tdermal, ultrasonic, RF protection. Stable into reactive or mismatched loads
Load ProtectionTurn-on/off muting; AC coupling (850, 1450); Triac crowbar (1850HD, 2450, 4050HD, 5050) on each channel
Dimensions3.5” (8.9 cm) tall; 2 rack spaces5.25” (13.3 cm) tall; 3 rack spaces
Power Requirements100, 120, 230 V AC (factory configured), 50–60 Hz

All specifications are subject to change without notice.

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