QSC Audio RMX5050A Two-Channel Power Amplifier rmx-5050-a 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-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 Model RMX 850a RMX 1450a RMX 2450a RMX 4050a RMX 5050a Power per Channel, Stereo Mode (both channels driven) 8Ω, FTC 20 Hz–20 kHz, 0.1% THD 185 W 260 W 450 W 800 (650**) W 1050 W 8Ω, EIA 1 kHz, 0.1% THD 200 W 300 W 500 W 850 W 1100 W 4Ω, FTC 20 Hz–20 kHz, 0.1% THD 280 W 400 W 650 W 1300 W 1600 W 4Ω, EIA 1 kHz, 0.1% THD 300 W 500 W (0.5% tdD) 800 W 1400 W 1800 W 2Ω, FTC 20 Hz–20 kHz, 1% THD – – – 1600 W 2000 W 2Ω, EIA 1 kHz, 1% THD 430 W 700 W 1200 W 2000 W 2500 W Power, Bridge-Mono Mode 8Ω, FTC 20 Hz–20 kHz, 0.1% THD 530 W 800 W 1300 W 2600 W 3200 W 8Ω, EIA 1 kHz, 0.1% THD 600 W 900 W 1500 W 2800 W 3600 W 4Ω, EIA 1 kHz, 1% THD 830 W 1400 W 2400 W 4000 W 5000 W 100 V Direct Drive, EIA 1 kHz, 1% THD – 600 W 2300 W – – Signal to Noise (20 Hz–20 kHz) -100 dB Distortion (SMPTE-IM) < 0.01% < 0.02% Input Sensitivity at 8Ω 1.15V (+3.4dBu) 1.23V(+4.0 dBu) 1.42V (+5.3 dBu) Voltage Gain 31.6x (30 dB) 40x (32 dB) 50x (34 dB) 64x (36 dB) Output Circuitry Class AB 2-tier Class H 3-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 A6.6 A 6.0 A9.6 A 6.3 A15.6 A 10.0 A20.1 A 13.9 A26.9 A AC Mains Plug100/120V230V NEMA 5-15CEE7/7 NEMA 5-20CEE7/7 Distortion (typical)20 Hz–20 kHz, 10 dB below rated power1 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 Response 20 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 Impedance 10 kΩ unbalanced; 20 kΩ balanced Input Stage Clipping 10 V rms (+22 dBu) 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 knobsRear: 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) 89 (2 RU) × 482 × 404 mm3.5 (2 RU) × 19 × 15.9 in 132 (3 RU) × 482 × 404 mm5.25 (3 RU) × 19 × 15.9 in Carton Dimensions (H×W×D) 610 × 560 × 153 mm24 × 22 × 6 in 610 × 560 × 229 mm24 × 22 × 9 in Net Weight 15.9 kg / 35 lb 18.2 kg / 40 lb 20.2 kg / 44.5 lb 30.8 kg / 68 lb 33.1 kg / 75 lb Shipping Weight 18.6 kg / 41 lb 20.9 kg / 46 lb 23 kg / 50.5 lb 34.9 kg / 77 lb 37.6 kg / 87 lb Power Requirements 100, 120, 230 V AC (factory configured), 50–60 Hz
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