Brooklyn, NY, United States
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QSC RMX4050a 2 channels, 850w /ch @ 8-Ohm, 1400w /ch @ 4-Ohm, 2000w /ch @ 2-Ohm, 4000w /ch @ 4-Ohm (bridged)With 1400 watts per channel into 4 Ω and 2000 into 2 Ω, all in a chassis that is less than 16" deep, the RMX4050a is perfectly suited for performing musicians. The RMXa Series is an update on a proven line of amplifiersFeaturesCompact size — up to 2500 watts in two rack spaces, or 5000 watts in three rack spacesHigh-current toroidal transformers, for greater 2-ohm power and low noiseIndependent user-defeatable clip limiters reduce distortionSelectable low-frequency filters (30 Hz or 50 Hz) protect speakers and increase headroomThe 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 performanceThe 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 inputsTouch-proof binding post and Neutrik Speakon® outputsFront mounted gain controls for easy accessSignal and clip LED indicators for monitoring performanceIndependent DC and thermal overload protection on each channel automatically protects amplifier and speakers3-year warranty plus optional 3-year extended service contract ModelRMX 850aRMX 1450aRMX 2450aRMX 4050aRMX 5050aPower per Channel, Stereo Mode (both channels driven)8Ω, FTC 20 Hz–20 kHz, 0.1% tdD185 W260 W450 W800 (650**) W1050 W8Ω, EIA 1 kHz, 0.1% tdD200 W300 W500 W850 W1100 W4Ω, FTC 20 Hz–20 kHz, 0.1% tdD280 W400 W650 W1300 W1600 W4Ω, EIA 1 kHz, 0.1% tdD300 W500 W (0.5% tdD)800 W1400 W1800 W2Ω, FTC 20 Hz–20 kHz, 1% tdD–––1600 W2000 W2Ω, EIA 1 kHz, 1% tdD430 W700 W1200 W2000 W2500 WPower, Bridge-Mono Mode8Ω, FTC 20 Hz–20 kHz, 0.1% tdD530 W800 W1300 W2600 W3200 W8Ω, EIA 1 kHz, 0.1% tdD600 W900 W1500 W2800 W3600 W4Ω, EIA 1 kHz, 1% tdD830 W1400 W2400 W4000 W5000 WSignal to Noise (20 Hz–20 kHz)-100 dBDistortion (SMPTE-IM)< 0.01%< 0.02%Input Sensitivity at 8Ω1.15V (+3.4dBu)1.23V (+4.0 dBu)1.42V (+5.3 dBu)Voltage Gain31.6x (30 dB)40x (32 dB)50x (34 dB)64x (36 dB)Output CircuitryClass AB2-tier Class H3-tier Class HCurrent Draw (120 V AC) Typical, 1/8 power pink noise at 4Ω* Severe, 1/3 power pink noise at 4Ω* 4.5 A 6.6 A 6.0 A 9.6 A 6.3 A 15.6 A 10.0 A 20.1 A 13.9 A 26.9 AAC Mains Plug 100/120V 230VNEMA 5-15 CEE7/7 NEMA 5-20 CEE7/7Weight Net Shipping 15.9 kg / 35 lb 18.6 kg / 41 lb 18.2 kg / 40 lb 20.9 kg / 46 lb 20.2 kg / 44.5 lb 23 kg / 50.5 lb 30.8 kg / 68 lb 34.9 kg / 77 lb 33.1 kg / 75 lb 37.6 kg / 87 lbDistortion (typical) 20 Hz–20 kHz, 10 dB below rated power 1 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 8ΩFrequency Response20 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 8ΩInput Impedance10 kΩ unbalanced; 20 kΩ balancedInput Stage Clipping10 V rms (+22 dBu)6.4 V rms (+18 dBu)CoolingContinuously variable speed fan, back-to-front air flowConnectors (each channel)Input: Active balanced; 3-pin Euro-style detachable terminal block and XLR (pin 2+) Output: Touch-proof binding posts; Neutrik Speakon®ControlsFront: AC switch; Channel 1 & 2 gain knobs Rear: 10-position DIP switchLED IndicatorsPower on: Green; Signal: Yellow (1 per channel); Clip/Protect: Red (1 per channel)Amplifier ProtectionFull short circuit, open circuit, tdermal, ultrasonic, RF protection. Stable into reactive or mismatched loadsLoad ProtectionTurn-on/off muting; AC coupling (850, 1450); Triac crowbar (1850HD, 2450, 4050HD, 5050) on each channelDimensions610 × 560 × 153 mm 24 × 22 × 6 in610 × 560 × 229 mm 24 × 22 × 9 inPower Requirements100, 120, 230 V AC (factory configured), 50–60 Hz
Price$1,899
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