QSC QA RMX2450A 2 Channel Power Amplifier

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

Specifications

8Ω, FTC 20 Hz–20 kHz, 0.1% THD	450 W
8Ω, EIA 1 kHz, 0.1% THD	500 W
4Ω, FTC 20 Hz–20 kHz, 0.1% THD	650 W
4Ω, EIA 1 kHz, 0.1% THD	800 W
2Ω, FTC 20 Hz–20 kHz, 1% THD	–
2Ω, EIA 1 kHz, 1% THD	1200 W
Power, Bridge-Mono Mode
8Ω, FTC 20 Hz–20 kHz, 0.1% THD	1300 W
8Ω, EIA 1 kHz, 0.1% THD	1500 W
4Ω, EIA 1 kHz, 1% THD	2400 W
100 V Direct Drive, EIA 1 kHz, 1% THD	2300 W
Signal to Noise (20 Hz–20 kHz)	-100 dB
Distortion (SMPTE-IM)	< 0.02%
Input Sensitivity at 8Ω	1.23V (+4.0 dBu)
Voltage Gain	50x (34 dB)
Output Circuitry	2-tier Class H
Current Draw (120 V AC) Typical, 1/8 power pink noise at 4Ω* Severe, 1/3 power pink noise at 4Ω*	6.3 A 15.6 A
AC Mains Plug 100/120V 230V	NEMA 5-15 CEE7/7
Distortion (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
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)	> 300 at 8Ω
Input Impedance	10 kΩ unbalanced; 20 kΩ balanced
Input Stage Clipping	10 V rms (+22 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
Product Dimensions (H×W×D)	89 (2 RU) × 482 × 404 mm 3.5 (2 RU) × 19 × 15.9 in
Carton Dimensions (H×W×D)	610 × 560 × 153 mm 24 × 22 × 6 in
Net Weight	20.2 kg / 44.5 lb
Shipping Weight	23 kg / 50.5 lb
Power Requirements	100, 120, 230 V AC (factory configured), 50–60 Hz