QSC RMX 1450a Two-Channel Power Amplifier
December 5, 2016
QSC RMX 4050a Two-Channel Power Amplifier
December 5, 2016
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QSC RMX 2450a Two-Channel Power Amplifier

$749.99


Professional quality performance, incorporating road-proven QSC designs

 Model RMX 850a RMX 1450a RMX 2450a RMX 4050a RMX 5050a
Power per Channel, Stereo Mode (both channels driven)
8?, FTC 20 Hz–20 kHz, 0.1% tdD 185 W 260 W 450 W 800 (650**) W 1050 W
8?, EIA 1 kHz, 0.1% tdD 200 W 300 W 500 W 850 W 1100 W
4?, FTC 20 Hz–20 kHz, 0.1% tdD 280 W 400 W 650 W 1300 W 1600 W
4?, EIA 1 kHz, 0.1% tdD 300 W 500 W (0.5% tdD) 800 W 1400 W 1800 W
2?, FTC 20 Hz–20 kHz, 1% tdD 1600 W 2000 W
2?, EIA 1 kHz, 1% tdD 430 W 700 W 1200 W 2000 W 2500 W
Power, Bridge-Mono Mode
8?, FTC 20 Hz–20 kHz, 0.1% tdD 530 W 800 W 1300 W 2600 W 3200 W
8?, EIA 1 kHz, 0.1% tdD 600 W 900 W 1500 W 2800 W 3600 W
4?, EIA 1 kHz, 1% tdD 830 W 1400 W 2400 W 4000 W 5000 W
Signal to Noise (20 Hz–20 kHz) -100 dB
Distortion (SMPTE-IM) < 0.01% < 0.02%
Input Sensitivity at 8? 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 4?*
Severe, 1/3 power pink noise at 4?*
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 A
AC Mains Plug
100/120V
230V
NEMA 5-15
CEE7/7
NEMA 5-20
CEE7/7
Weight
Net
Shipping
35 lb (15.9 kg)
41 lb (18.6 kg)
40 lb (18.2 kg)
46 lb (20.9 kg)
44.5 lb (20.2 kg)
50.5 lb (23 kg)
68 lb (30.8 kg)
77 lb (34.9 kg)
75 lb (33.1 kg)
87 lb (37.2 kg)
Distortion (typical)
20 Hz–20 kHz, 10 dB below rated power
1 kHz and below, full rated power
< 0.03% tdD, 4? and 8?
< 0.03% tdD, 4? and 8?
< 0.02% tdD, 4? and 8?
< 0.02% tdD, 4? and 8?
Frequency Response 20 Hz–20 kHz: +0/-1 dB -3 dB points: 5 Hz and 50 kHz (LF filter bybassed, 8?)
Damping Factor (1 kHz and below) > 300 at 8? > 250 at 8?
Input Impedance 10 k? unbalanced; 20 k? 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 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 3.5” (8.9 cm) tall; 2 rack spaces 5.25” (13.3 cm) tall; 3 rack spaces
Power Requirements 100, 120, 230 V AC (factory configured), 50–60 Hz

All specifications are subject to change without notice

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