QSC RMX5050a Power Amplifier

Extend Your Sound with the Legendary Audio Performance of the QSC RMX5050a Power Amplifier

The RMXa Series is an update to a proven line of amplifiers, combining legendary QSC reliability, audio performance, and affordability. Entertainers and touring users can continue to rely on the RMXa as one of the leading amplifier series in the world. For mid-power applications, the 2RU models offer 4-ohm power ratings from 300 to 800 watts per channel. For premium loudspeaker systems with extremely high power capacity, the 3RU models (RMX 4050a and RMX 5050a) are unchallenged.

• 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
• Both the RMX4050a and the RMX5050a feature a dual mono, high-current power supply for increased reliability and performance
• The RMX5050a'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

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-inch deep. RMXa amplifiers include a comprehensive set of features, including XLR and 1/4-inch balanced inputs, Speakon and binding post outputs for convenient connectivity. User-defeatable clip limiters and selectable low-frequency filters optimize sonic performance.

SPECIFICATIONS

Power per Channel, Stereo Mode (Both Channels Driven)

• 8Ω, FTC 20 Hz–20 kHz, 0.1% THD: 1050 W
• 8Ω, EIA 1 kHz, 0.1% THD: 1100 W
• 4Ω, FTC 20 Hz–20 kHz, 0.1% THD: 1600 W
• 4Ω, EIA 1 kHz, 0.1% THD: 1800 W
• 2Ω, FTC 20 Hz–20 kHz, 1% THD: 2000 W
• 2Ω, EIA 1 kHz, 1% THD: 2500 W

Power, Bridge-Mono Mode

• 8Ω, FTC 20 Hz–20 kHz, 0.1% THD: 3200 W
• 8Ω, EIA 1 kHz, 0.1% THD: 3600 W
• 4Ω, EIA 1 kHz, 1% THD: 5000 W

Audio Performance

• Signal to Noise (20 Hz–20 kHz): -100 dB
• Distortion (SMPTE-IM): < 0.02%
• Distortion (Typical), 20 Hz–20 kHz, 10 dB below rated power: < 0.02% THD, 4Ω and 8Ω
• Distortion (Typical), 1 kHz and below, 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
• Voltage Gain: 64x (36 dB)
• Input Sensitivity at 8Ω: 1.42V (+5.3 dBu)
• Input Impedance: 10 kΩ unbalanced; 20 kΩ balanced
• Input Stage Clipping: 6.4 V rms (+18 dBu)

Output Circuitry

• Output Circuitry: 3-tier Class H

Current Draw (120 V AC)

• Typical, 1/8 power pink noise at 4Ω: 13.9 A
• Severe, 1/3 power pink noise at 4Ω: 26.9 A

AC Mains Plug

• 100/120V: NEMA 5-20
• 230V: CEE7/7

Cooling

• 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 and 2 gain knobs
• Rear: 10-position DIP switch

LED Indicators

• Power On: Green
• Signal: Yellow (1 per channel)
• Clip/Protect: Red (1 per channel)

Protection

• Amplifier Protection: Full short circuit, open circuit, thermal, ultrasonic, RF protection; stable into reactive or mismatched loads
• Load Protection: Turn-on/off muting; Triac crowbar on each channel

Dimensions and Weight

• Product Dimensions (H x W x D): 132 x 482 x 404 mm
• Product Dimensions (H x W x D): 5.25 x 19 x 15.9 in
• Carton Dimensions (H x W x D): 610 x 560 x 229 mm
• Carton Dimensions (H x W x D): 24 x 22 x 9 in
• Net Weight: 33.1 kg / 75 lb
• Shipping Weight: 37.6 kg / 87 lb

Power Requirements

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

Manufacturer: QSC Audio
Model: RMX5050A
SKU: I143308-N-0-WHXX
UPC: 684284003935

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