RMX 4050HD

QSC's 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 120 volt versions of the RMX 4050HD accomplish 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.

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 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
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
3 year warranty. An optional 3 year extended service contract is available. Ask your dealer for details.

Amplifier Selector Tool

Need help selecting the right RMX Series amplifier for your speakers? All you need to know is the speaker's power handling rating found on the manufacturer's specification sheet and the Amplifier Selector Tool will help you select an amplifier that best fits your needs.

Español

RMX SERIES AMPLIFIERS

DOCUMENTS

RMX 4050HD Specifications (PDF 92K)
RMX 4050HD User Manual:
English User Manual (PDF 585K)
Manual del Usuario (PDF 585K)
Manuel de l’utilisateur (PDF 585K)
Bedienhandbuch (PDF 585K)
用户手册 (PDF 585K)

WHERE TO BUY

Buy Online
Hear it Today at an authorized QSC dealer
Contact a sales representative

HI-RES IMAGES

Front
Rear
Studio

ACCESSORIES

Handle: 3RU

Transformers:
70-Volt Output: OT-300a | OT600

Visit Pro Audio Review's website
for a review of QSC's RMX 4050 Amplifier.

RoHS Compliant

Free 6 year Extended Warranty You must register your product on the website to qualify.

Click Here to register your RMX amplifier

SPECIFICATIONS	RMX 4050HD	RMX 4050HD / CE Compliant
	STEREO MODE (Both Channels Driven)
8 ohms FTC 20 Hz - 20 kHz, 0.1% THD EIA 1 kHz, 0.1% THD	800 W 850 w	650 W
4 ohms FTC 20 Hz - 20 kHz, 0.1% THD EIA 1 kHz, 0.1% THD	1300 W 1400 w	1300 W
2 ohms FTC 20 Hz-20 kHz 0.1% THD EIA 1 kHz 1% THD	1600 W 2000 w	1600 W 2000W
	BRIDGE MONO MODE
8 ohms FTC 20 Hz-20 kHz 0.1% THD EIA 1 kHz 0.1% THD	2600 W 2800 w	2600 W 2800 w
4 ohms EIA 1 kHz 1% THD	4000 W	4000W
Distortion (SMPTE-IM)	Less than 0.02%
Distortion (Typical) 20 Hz-20 kHz: 10 dB below rated power 1 kHz and below: full rated power	Less than 0.02% @ 4 ohms, less than 0.01% @ 8 ohms 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 - 20 kHz, 8 ohm load)
Input Impedance	20k ohm balanced, 10k ohm unbalanced
Input Sensitivity	1.25 Vrms for 800 W into 8 ohms	1.12 Vrms for 650 W into 8 ohms
Voltage Gain	64x (36 dB) for 8 ohm load
Controls Front: Controls Rear:	AC power switch, Ch. 1 and Ch. 2 gain control 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.
Indicators	Power-On: Green LED, Protect: Red LED Signal -30dB: Yellow LED, Clip: Red LED
Connectors Input: Connectors Output:	XLR female, TRS (1/4-inch), and barrier-strip screw terminals, each channel 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)	240 Volts AC (+/-10%) 50-60 Hz
Dimensions	19" 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

All Specification Subject to Change Without Notice.

Speakon is a trademark of Neutrik

TOP