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QSC RMX4050HD Power AmplifierThe QSC RMX 4050HD power amplifier represents the state-of-the-art in professional quality performance at an affordable price. Perfectly suited for a wide range of sound reinforcement applications including professional touring, performing musicians, and mobile DJs, the RMX 4050HD is optimized to deliver high levels of sustained power, extraordinary audio performance, and road-proven reliability. Like its smaller sibling (the RMX 1850HD), the RMX 4050HD is one of two RMX "Heavy Duty" models designed to work as hard into 2-ohm loads as most competing amplifiers will at 4-ohms.With a three-tier, Class H design, the RMX 4050HD is extremely efficient at real world power levels. Less AC current is wasted and more goes into producing useful audio power. The RMX 4050HD accomplishes all this with a standard 15-Amp plug. Like all RMX amps,the RMX 4050HD features balanced 1/4" TRS,XLR and barrier strip inputs, binding posts and Neutrik Speakon™ outputs, front-mounted gain controls, plus signal and clip LED indicators to monitor performance.
RMX 4050HD
800W per channel @ 8 ohms
1300W/channel @ 4 ohms
1600W/channel @ 2 ohms
2600W bridged mono @ 8 ohms
4000W bridged @ 4 ohms QSC RMX Series amplifiers give you clean, dynamic power with the legendary QSC sound quality and reliability that pros depend on. We combined our rugged high output designs with the latest circuit technology to deliver unmatched performance at a new breakthrough price.
Muscular Power Plant
The power supply is the heart of an amplifier, converting raw AC power from the wall to clean DC for the audio circuitry. The RMX uses a powerful high-current toroidal transformer and ample filter capacitance to ensure generous energy reserves. This makes a critical difference in sound quality, allowing the amp to effortlessly punch out high level transients, even when driving abusive 2-ohm speaker loads.
Superior Performance
RMX amplifiers deliver true studio-quality sound. A full complementary output circuit using the highest-grade linear output devices delivers ultra-low distortion (<0.05% THD) & a ruler-flat frequency response. SMT (Surface Mount Technology) triples small-signal component density, enabling us to pack up to 2400 watts of power in a chassis only 2 rack spaces & less than 16" deep. And unlike other designs, RMX output devices are direct-mounted to the heat sink for optimum thermal coupling & cooling.
RMX 4050HD Features
- The RMX 4050HD provides improved thermal performance that gives you higher continuous power in 2-ohms stereo or 4-ohms bridged applications
- Dual mono, high current power supply for increased reliability and performance
- 3RU chassis only 16" deep
- Professional quality performance—incorporates road-proven QSC designs
- High-current toroidal transformers for greater two-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
- Balanced 1/4" (6.3 mm) TRS, XLR, and barrier strip inputs
- Binding post and Neutrik Speakon™ outputs
- Front mounted gain controls for easy access
- Signal and Clip LED indicators to monitor performance
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 Ohms
- Controls:
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 and 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" (48.3 cm) wide, 5.25" (13.3 cm) tall, 15.9" (40.39 cm) overall depth
- Weight: 68 lb (30.84 kg) net, 77 lb (34.43 kg) shipping
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