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The RMX 4050a is a “heavy duty” model designed to work as hard into 2 ohm loads as most competing amplifiers will at 4 ohms.
Both the RMX 5050a and RMX 4050a feature a three-tier, Class H design that is extremely efficient at real world power levels. Less AC current is wasted and more available current goes into producing useful audio power. 120 volt versions of the RMX 4050a accomplish all this with a standard 15 amp plug.
FEATURES
- • Professional quality performance--incorporates road-proven QSC designs
• The 4000 watt RMX 4050a operates on a standard 15 amp plug (120V)
• The RMX 4050a features a dual mono, high-current power supply for increased reliability and performance
• The RMX 4050a provides improved thermal performance yielding higher continuous power in 2 ohm stereo or 4 ohm bridged applications.
• 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
• 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 to monitor 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
SPECIFICATIONS
- Power per Channel, Stereo Mode (both channels driven):
8Ω, FTC 20 Hz–20 kHz, 0.1% THD: 800 (650**) W
8Ω, EIA 1 kHz, 0.1% THD: 850 W
4Ω, FTC 20 Hz–20 kHz, 0.1% THD: 1300 W
4Ω, EIA 1 kHz, 0.1% THD: 1400 W
2Ω, FTC 20 Hz–20 kHz, 1% THD: 1600 W
2Ω, EIA 1 kHz, 1% THD: 2000 W
Power, Bridge-Mono Mode:
8Ω, FTC 20 Hz–20 kHz, 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 (20 Hz–20 kHz): -100 dB
Distortion (SMPTE-IM): < 0.02%
Input Sensitivity at 8Ω: 1.42V (+5.3 dBu)
Voltage Gain: 64x (36 dB)
Output Circuitry: 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
Supplied Plug Type, 100/120V: NEMA 5-15
Supplied Plug Type, 230V: CEE7/7
Distortion (typical) 20 Hz – 20 kHz: 10 dB below rated power 1.0 kHz and below: < 0.02% THD / 4Ω and 8Ω
full rated power: < 0.02% THD / 4Ω and 8Ω
Frequency Response: 20 Hz–20 kHz: +0/-1 dB -3 dB points: 5 Hz and 50 kHz (LF filter bypassed, 8Ω)
Damping Factor (1 kHz and below): > 250 at 8Ω
Input Impedance: 10 kΩ unbalanced; 20 kΩ balanced
Input Stage Clipping: 6.4 V rms (+18 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): 132 (3 RU) × 482 × 404 mm or 5.25 (3 RU) × 19 × 15.9 in
Net Weight: 30.8 kg / 68 lb
Shipping Weight: 34.9 kg / 77 lb
Power Requirements: 100, 120, 230 V AC (factory configured), 50–60 Hz
CONTENTS
- (1) QSC RMX4050a Professional Power Amplifier
(4) Adhesive Rubber Feet (for non racked applications)
(1) Rack Ear Mounting Kit
(1) IEC US Power Cord
(1) Operator's Instructions
BYFP ipCases
Microphone
Video
DJ
Speaker
Lighting
Mixer
Control
Utility
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