QSC RMX5050a Power Amplifier

PA SKU # QSC RMX5050A MFR # RMX5050A UPC # 684284003935
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  • Product Highlights
  • Dual Mono, High-Current Power Supply
  • Deafeat-able Clip Limiters
  • Selectable Low-Frequency Filters
  • Touch-Proof Binding Post
  • Neutric Speaker Outputs
  • DC & Thermal Overload Protection
  • 3 Year Warranty
Model: 5050a 1450a 2450a 4050a 5050a 850a

RMX5050a Power Amplifier

The RMXa Series amplifiers from QSC offer true professional-quality performance at an affordable price. Three 2-rackspace models range in power from 430 to 1200 watts per channel at 2 ohms. Two 3-rackspace models provide 2000 to 2500 watts per channel at 2 ohms. All five models feature a compact chassis less than 16" deep. RMXa amplifiers include a comprehensive set of features including XLR and 1/4" balanced inputs, Speakon and binding post outposts for convenient connectivity. User-defeatable clip limiters and selectable low-frequency filters optimize sonic performance.

RMX 5050a

QSC's RMX 5050a power amplifier represents state-of-the-art in professional quality performance at an affordable price. Perfectly suited for a wide range of

RMX Power Amplifiers

sound reinforcement applications including professional touring, performing musicians, and mobile entertainers, the RMX 5050a is optimized to deliver high levels of sustained power, extraordinary audio performance and road-proven reliability.

RMX 4050a

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 RMX4050a accomplish all this with a standard 15 amp plug.

  • 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
  • Power per Channel, Stereo Mode (both channels driven)
  • 8Ω, FTC 20 Hz-20 kHz, 0.1% tdD: 1050 W
  • 8Ω, EIA 1 kHz, 0.1% tdD: 1100 W
  • 4Ω, FTC 20 Hz-20 kHz, 0.1% tdD: 1600 W
  • 4Ω, EIA 1 kHz, 0.1% tdD: 1800 W
  • 2Ω, FTC 20 Hz-20 kHz, 1% tdD: 2000 W
  • 2Ω, EIA 1 kHz, 1% tdD: 2500 W
  • Power, Bridge-Mono Mode
  • 8Ω, FTC 20 Hz-20 kHz, 0.1% tdD: 3200 W
  • 8Ω, EIA 1 kHz, 0.1% tdD: 3600 W
  • 4Ω, EIA 1 kHz, 1% tdD: 5000 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
  • Current Draw (120 V AC):
  • Typical, 1/8 power pink noise at 4Ω*: 10.0 A
  • Severe, 1/3 power pink noise at 4Ω*: 20.1 A
  • AC Mains Plug
  • 100/120V: NEMA 5-20
  • 230V: CEE7/7
  • Weight
  • Net: 75 lb (33.1 kg)
  • Shipping: 87 lb (37.2 kg)
  • Distortion (typical)
  • 20 Hz-20 kHz, 10 dB below rated power: < 0.02% tdD, 4Ω and 8Ω
  • 1 kHz and below, full rated power: < 0.02% tdD, 4Ω and 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
  • Dimensions: 5.25" (13.3 cm) tall; 3 rack spaces
  • Power Requirements: 100, 120, 230 V AC (factory configured), 50-60 Hz
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