2 QSC Audio Products, Inc.
RMX 850 RMX 1450 RMX 2450
OUTPUT POWER
in watts
FTC: 20 Hz–20 kHz @ 0.1% THD, both channels driven
8Ω per channel 185 260 450
4Ω per channel 280 400 650
EIA: 1 kHz @ 0.1% THD, both channels driven
8Ω per channel 200 280 500
4Ω per channel 300 450 750
1 kHz @ 1% THD, typical, both channels driven
2Ω per channel 430 700 1200
Bridge Mono:
8Ω, 20 Hz–20 kHz, 0.1% THD 530 800 1300
8Ω, 1 kHz, 0.1% THD 600 900 1500
4Ω, 1 kHz, 1% THD, typical 830 1400 2400
DYNAMIC HEADROOM 2 dB @ 4Ω
DISTORTION
SMPTE-IM < 0.01% < 0.01% < 0.02%
FREQUENCY RESPONSE 20 Hz–20 kHz, +0/-1 dB
(at 10 dB below rated output power) -3 dB points: 5 Hz and 50 kHz
DAMPING FACTOR > 300 @ 8Ω
NOISE (unweighted 20 Hz to 20 kHz, below rated output) 100 dB 100 dB 100 dB
VOLTAGE GAIN 31.6× (30 dB) 40× (32 dB) 50× (34 dB)
INPUT SENSITIVITY, V RMS
full rated power @ 8Ω 1.15v (+3.4 dBu) 1.15v (+3.4 dBu) 1.23v (+4.0 dBu)
INPUT IMPEDANCE 10 KΩ unbalanced
20 KΩ balanced
CONTROLS Front: AC switch, Ch. 1 and Ch. 2 gain
Rear: 10-position DIP switch
INDICATORS POWER: Green LED CLIP: Red LED, 1 per channel
SIGNAL: Yellow LED, 1 per channel
CONNECTORS Input: Active balanced; XLR and ¼" (6.3 mm) TRS, tip and pin 2 positive, and barrier strip
Output: “Touch-Proof” binding posts and Neutrik Speakon™
COOLING Continuously variable speed fan, back-to-front air flow
AMPLIFIER PROTECTION Full short circuit, open circuit, thermal, ultrasonic, and RF protection
Stable into reactive or mismatched loads
LOAD PROTECTION Turn-on/turn-off muting, AC coupling, triac crowbar (on each channel)
OUTPUT CIRCUIT TYPE AB AB H
AB: Class AB complementary linear output
H: Class AB complementary linear output with Class H 2-step high efficiency circuit
DIMENSIONS 19.0" (48.3 cm) wide, 3.5" (8.9 cm) tall (2 rack spaces)
15.9" (40 cm) deep (rack mounting to rear support ears)
WEIGHT Shipping: 41 lb. (18.6 kg) 46 lb. (20.9 kg) 50.5 lb. (23 kg)
Net: 35 lb. (15.9 kg) 40 lb. (18.2 kg) 44.5 lb. (20.2 kg)
POWER REQUIREMENTS Available for 120 or 220–240 VAC, 50/60 Hz
POWER CONSUMPTION
@ 120 VAC
(both channels driven)
Multiply currents by 0.5 for 230V units
US patents pending
SPECIFICATIONS SUBJECT TO CHANGE WITHOUT NOTICE
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A5.6*A5.9*A71
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A3.9*A7.41*A52
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A3.6A6.51A72
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A2.9*A32*A14
RMX Series Performance Specifications
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