QSC RMX2450a

• 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” (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
• 8O, FTC 20 Hz–20 kHz, 0.1% tdD : 450 W
• 8O, EIA 1 kHz, 0.1% tdD : 500 W
• 4O, FTC 20 Hz–20 kHz, 0.1% tdD : 650 W
• 4O, EIA 1 kHz, 0.1% tdD : 800 W
• 2O, FTC 20 Hz–20 kHz, 1% tdD : –
• 2O, EIA 1 kHz, 1% tdD : 1200 W

Power, Bridge-Mono Mode

• 8O, FTC 20 Hz–20 kHz, 0.1% tdD : 1300 W
• 8O, EIA 1 kHz, 0.1% tdD : 1500 W
• 4O, EIA 1 kHz, 1% tdD : 2400 W
• Signal to Noise (20 Hz–20 kHz) :
• 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 4O* : 6.3 A
• Severe, 1/3 power pink noise at 4O* : 15.6 A

AC Mains Plug

• 100/120V : NEMA 5-15
• 230V : CEE7/7

Distortion (typical)

• 20 Hz–20 kHz, 10 dB below rated power : < 0.03% tdD, 4O and 8O
• 1 kHz and below, full rated power : < 0.03% tdD, 4O and 8O
• 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
• 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
• Dimensions : 3.5” (8.9 cm) tall; 2 rack spaces
• Power Requirements : 100, 120, 230 V AC (factory configured), 50–60 Hz