QSC RMX 4050a Power Amp

The QSC RMX 4050HD 2-Channel Power Amplifier is perfectly suited for a wide range of applications, this heavy-duty model is designed to work as hard into 2-ohm loads as most competing amps will into 4 ohms. With a 3-tier, Class H design, it is extremely efficient. Delivers 1,600W/ch. @ 2 ohms, 1,300W @ 4 ohms, 800W @ 8 ohms, and 2,600W @ 8 ohms bridged. The RMX 4050HD features a dual mono high-current power supply, high-current toroidal transformers, independent user-defeatable clip limiters, selectable low-frequency filters (30Hz or 50Hz), balanced 1/4″ TRS, XLR, and barrier strip inputs, binding post and Neutrik Speakon outputs, front mounted gain control, signal and clip LEDs. 3RU rackmount chassis only 16″ deep.

Features

•     Delivers 800W per side into 8 ohms, 1300W into 4 ohms, 1600W into 2 ohms, and 2600W bridged mono into 8 ohms
•     Works as hard into 2-ohm loads as most competing amps will into 4 ohms
•     Extremely efficient 3-tier, Class H design
•     Dual mono high-current power supply
•     High-current toroidal transformers, independent user-defeatable clip limiters
•     Selectable low-frequency filters (30Hz or 50Hz)
•     Balanced 1/4″ TRS, XLR, and barrier strip inputs
•     Binding post and Neutrik Speakon outputs
•     Front mounted gain control
•     Signal and clip LEDs
•     3RU chassis only 16″ deep

Specifications

• Distortion (SMPTE-IM): Less than 0.02%
• Distortion (typical):
• 20 Hz-20 kHz: 10 dB below rated power, Less than 0.02% 4 Ohms, less than 0.01% 8 Ohms
• 1 kHz and below: Full rated power, Less than 0.02% 4 Ohms, less than 0.01% 8 Ohms
• Frequency Response:
• 20 Hz to 20 kHz, 8 ohms, LF filter bypassed, +0/-1 dB
• 5 Hz to 50 kHz, 8 ohms, LF filter bypassed, +0/-3 dB
• Damping Factor: Greater than 250 @ 8 Ohms
• Noise (unweighted): 100 dB below rated output (20 Hz to 20 kHz, 8 Ohm load)
• Input Sensitivity: 1.25 Vrms for 800 watts into 8 Ohm
• Front Panel: AC power switch, Ch. 1 and Ch. 2 gain control
• Rear Panel: 10-pole DIP switch featuring LF filter on/off, LF filter 30/50 Hz, Clip Limiter on/off controls for each channel, Switches for selecting Stereo, Parallel, or Bridge mode, Push-button circuit breaker for each channel
• Voltage Gain: 64x (36 dB) for 8 Ohm load
• Input Impedance: 20 kOhms balanced, 10 kOhms unbalanced
• Indicators:
• Power-On: Green LED
• Protect: Red, LED
• Signal -30dB: Yellow LED
• Clip: Red LED
• Connectors:
• Input: XLR female,TRS (1/4-inch), and barrier-strip screw terminals, each channel
• Output: Binding posts and Speakon outputs (Ch. 1 Speakon wired for biamp)
• Cooling: Continuously variable-speed fan, rear-to-front air flow
• Amplifier Protection:
• Short circuit, open circuit, thermal, ultrasonic, and RF protection
• Stable into reactive or mismatched loads
• Load Protection: On/off muting, DC fault output crowbar
• Power Requirements: 100, 120 or 240 Volts AC (+/-10%) 50-60 Hz (factory configured)
• Dimensions: 19.0 inches (48.3 cm) wide, 5.25 inches (13.3 cm) tall, 15.9 inches (40.39 cm) overall depth
• Weight: 68 pounds (30.84 kg) net, 77 pounds (34.43 kg) shipping