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QSC RMX4050a 2000W Professional Low-Z Power Amplifier

BH #QSRMX4050A • MFR #RMX4050A
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QSC RMX4050a 2000W Professional Low-Z Power Amplifier
Key Features
  • 850W per Channel at 8Ω
  • 1400W per Channel at 4Ω
  • 2000W per Channel at 2Ω
  • Independent User-Defeatable Limiters
The QSC RMX4050a 2000W Professional Low-Z Power Amplifier is a 3RU unit designed for high power live sound reinforcement applications. The amplifier features both XLR and 1/4" balanced inputs as well as Speakon and touch-proof binding post output connectors. The integrated user-defeatable clip limiters and selectable low-frequency filters allow you to adjust the amplifier to your application.
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QSC RMXa Overview

The QSC RMX4050a 2000W Professional Low-Z Power Amplifier is a 3RU unit designed for high power live sound reinforcement applications. The amplifier features both XLR and 1/4" balanced inputs as well as Speakon and touch-proof binding post output connectors. The integrated user-defeatable clip limiters and selectable low-frequency filters allow you to adjust the amplifier to your application.

The amplifier is rated at 850W per channel at 8Ω from 20 to 20,000 Hz, 1400W per channel at 4Ω from 20 to 20,000 Hz, 2000W per channel at 2Ω from 20 to 20,000 Hz, and 2800W in bridge mono mode at 8Ω from 20 to 20,000 Hz.

This unit is less than 16" deep and features a three-tier Class H output circuit design for efficient power management. As a result, less AC current is wasted and more available current is utilized for amplification.

2000W amplifier features a dual mono, high-current power supply for increased reliability and performance
Improved thermal performance yielding higher continuous power in 2Ω stereo or 4Ω bridged applications
Compact 3RU size
High-current toroidal transformers for increased 2Ω power and lower noise
Independent user-defeatable clip limiters reduce distortion
Selectable low-frequency filters (30 or 50 Hz) protect speakers and increase headroom
Balanced 1/4" (6.3mm) 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 performance monitoring
Independent DC and thermal overload protection on each channel automatically protects amplifier and speakers
4000W amplifier operates on a standard 15A plug (120V)
UPC: 684284062864

QSC RMXa Specs

Connectors
Input (active balanced): 2 x 3-pin Euro-style detachable terminal block
2 x 3-Pin XLR (pin 2+)

Output: 2 x touch-proof binding posts
2 x Neutrik Speakon connectors
Stereo FTC Power
8Ω / FTC 20 to 20,000 Hz / 0.1% THD: 800 W (650 W @ 1 1.0 kHz sine wave, 1% THD, 1 channel driven)
8Ω / EIA 1,000 Hz / 0.1% THD: 850 W
4Ω / FTC 20 to 20,000 Hz / 0.1% THD: 1300 W
4Ω / EIA 1,000 Hz / 0.1% THD: 1400 W
2Ω / FTC 20 to 20,000 Hz / 1% THD: 1600 W
2Ω / EIA 1,000 Hz / 1% THD: 2000 W
Bridge
8Ω / FTC 20 to 20,000 Hz / 0.1% THD: 2600 W
8Ω / EIA 1 kHz / 0.1% THD: 2800 W
4Ω / EIA 1 kHz / 1% THD: 4000 W
Signal to Noise Ratio
> - 100 dB (20 to 20,000 Hz at 8 Ω)
Distortion
SMPTE-M: < 0.02%
Typical: 20 Hz to 20 kHz 10 dB below rated power < 0.02% THD / 4 Ω and 8 Ω
1.0 kHz and below full rated power 0.02% THD / 4 Ω and 8 Ω
Input Sensitivity @ 8 ohms
1.42 V (5.3 dBu)
Voltage Gain
64x (36 dB)
Output Circuit
3-tier Class H
Power Requirements
Typical, 1/8 Power Pink Noise at 4Ω: 10.0 A
Severe, 1/3 Power Pink Noise at 4Ω: 20.1 A
Plug Type
Supplied: NEMA 5-15 (100 / 120 V)
CEE7/7 (230 V)
Frequency Response
20 Hz to 20 kHz: 0/-1 dB
-3 dB Points: 5 Hz and 50 kHz (LF filter bypassed / 8 Ω)
Damping Factor
> 250 at 8Ω (1,000 Hz and below)
Input Impedance
10 kΩ unbalanced / 20 kΩ balanced
Input Clipping Level
6.4 Vrms (+18 dBu)
Cooling
Continuously variable speed fan, back-to-front air flow
Controls
Front: AC switch / channel 1 & 2 gain knobs
Rear: 10-position DIP switch
Indicators
Power-On: Green LED
Signal: Yellow LED (1 per channel)
Clip: Red LED (1 per channel)
Protect: Red LED
Protection
Amplifier: Stable into reactive or mismatched loads
Load: On/off muting, Triac crowbar on each channel
Current Consumption
@ 120 V

2Ω
Typical: 14.5 A, Full: 30.6 A, Maximum: 65.7 A

4Ω
Typical: 10.0 A, Full: 20.1 A, Maximum: 42.2 A

8Ω
Typical: 6.4 A, Full: 12.5 A, Maximum: 25.5 A
Power Requirement
100, 120, 230 VAC, 50 to 60 Hz (factory configured)
Dimensions
5.2 x 19.0 x 15.9" (132.0 x 483.0 x 404.0 mm)
Weight
68.0 lb (30.8 kg)
Packaging Info
Package Weight
78 lb
Box Dimensions (LxWxH)
23.858 x 21.811 x 8.189"

QSC RMXa Reviews

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