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QSC RMX 4050HD Power Amplifier

Representing top of the line performance at an affordable price, the RMX4050HD from QSC has all the power you need to get your rig running.

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QSC RMX 4050HD Power Amplifier

zZounds is an
authorized QSC dealer

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 RMX4050HD is optimized to deliver high levels of sustained power, extraordinary audio performance, and road-proven reliability.

Like its smaller sibling (the RMX 1850HD), the QSC RMX 4050HD is 1 of 2 RMX "Heavy Duty" models designed to work as hard into 2-ohm loads as most competing amplifiers will at 4-ohms. With a 3-tier, Class H design, the RMX4050HD is extremely efficient at real world power levels. Less AC current is wasted and more goes into producing useful audio power. The QSC RMX 4050HD accomplishes all this with a standard 15-Amp plug.

Like all RMX amps, the QSC RMX 4050HD features balanced 1/4 in. 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.

The QSC RMX 4050HD provides improved thermal performance that gives you higher continuous power in 2-ohms stereo or 4-ohms bridged applications

Features

- Dual mono, high current power supply for increased reliability and performance
- 3RU chassis only 16 in. 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 in. (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 zZounds is an authorized dealer of QSC products.

Stereo Mode, Both Channels Driven Continuous: Average Output Power Per Channel
8 ohms FTC 20 Hz-20 kHz 0.1% THD: 800 Watts
4 ohms FTC 20 Hz-20 kHz 0.1% THD: 1300 Watts
2 ohms FTC 20 Hz-20 kHz 0.1% THD: 1600 Watts
8 ohms EIC 1 kHz 0.1% THD: 850 Watts
4 ohms EIC 1 kHz 0.1% THD: 1400 Watts
2 ohms EIC 1 kHz 1% THD: 2000 Watts

Bridge-Mono: Mode Bridge-Mono Mode Operation
8 ohms FTC 20 Hz-20 kHz 0.1% THD: 2600 Watts
8 ohms EIA 1 kHz 0.1% THD: 2800 Watts
4 ohms EIA 1 kHz 1% THD: 4000 Watts

Distortion (SMPTE-IM): Less than 0.02%

Distortion (Typical)
20 Hz-20 kHz: 10 dB below rated power: Less than 0.02% 4 ohm, less than 0.01% 8 ohms
1 kHz and below: full rated power: Less than 0.02% 4 ohm, 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 ohm

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: AC power switch, Ch. 1 and Ch. 2 gain control

Controls Rear: 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 k ohm balanced, 10 k ohm unbalanced

Indicators:
Power-On: Green LED, Protect: Red LED
Signal -30dB: Yellow LED, Clip: Red LED

Connectors Input: XLR female, TRS (1/4 in.), and barrier-strip screw terminals, each channel

Connectors 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 W x H x D: 19 x 5.25 x 15.9 in. (48.3 x 13.3 x 40.39 cm)

Weight: 68 lbs. (30.84 kg) net, 77 lbs. (34.43 kg) shipping

Note: Specifications subject to change without notice.

Note: Register your new product online with QSC and receive a Free 6-Year Extended Warranty upgrade (a $99 value).

Dimensions and Weight in Packaging: Shipping Weight: 80 lbs; Shipping Dimensions: 24 x 22 x 8 in

QSC Warranty

QSC Warranty

If you have additional warranty questions, please call the manufacturer at 800-772-2834

zZounds is an
authorized QSC dealer

Our extended 30-Day 100% Satisfaction Guarantee applies on this product. Buy it, and if it isn't just right for you, return it!

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What Our Customers Are Saying About zZounds "Thanks to zZounds for the awesome Play as you Pay installment plan. I have become a customer for life!" - customer on May 13, 2013

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Customer Reviews

4.5 out of 5 (32 ratings) Rate and Review This Product

Read 2 QSC RMX4050HD Power Amplifier Reviews

zZounds has verified that this customer bought this product from us. "Worth every penny--affordable and efficient"

Sound: Sound quality is good. We only use this product live. We use 4 of these amps with 16 JBL SR4726 speaker cabinets (four per amp @ 4Ohms) and the sound quality is superb. Give them plenty of electric and don't over drive the system. Any Amplifier will reproduce the sound efficiently if the system is set up properly. Don't ask it to do more than it is capable of doing. Our Crown power Amps seem to work much better on the low end though. Feature: Turn it on and forget about it! Quality: So far--so good. We've used four of them fot the last 6 months and had NO problems. Value: Good value for the money Manufacturer Support: dont know The Wow Factor: This product met our particular needs in the price range and was suitable for the type of music that we play. Overall: hopefully we will keep these amps until we wear them out.We compared this product to Crown Amps(probably not a real fair assesment), but dollar for dollar we feel this product served our needs and was an affordable alternative. The fans are a little noisy, but tolerable.

Style of Music: 50-60-70-show band

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zZounds has verified that this customer bought this product from us. "pro audio at its finest,"

Sound: cant beat the sound, plenty of power Feature: dip switches were confusing at first but nice features Ease of Use: very easy plug and play Quality: built like a tank, just as heavy too, good for a rack with wheels on it or stationary install, amp was bought when they first came out and still running strong. Value: good price and well worth it Manufacturer Support: never had to use it Overall: great amp plenty of power, although heavy its built to last. im running 6-18's 3 on each side subs and it runs without any hiccups

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Read 2 QSC RMX4050HD Power Amplifier Reviews

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Need it now but short of cash? All we need is the first payment up front and the rest in easy monthly payments!

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No interest. Ever.: It's just as if you paid the whole amount up front!
No paperwork. Nothing to track.: No application to mail or fax, no bills to pay. We automatically charge the payments to your credit card.

We'll wait on your money so you don't have to wait for your gear!

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zZounds customer service is consistently rated at or near the top on every major comparison shopping website--probably because we only hire experienced musicians with outstanding customer service skills to work in our call center, and they don't work on commission. To us, this is our most meaningful measure of success. zZounds has served over a million customers since 1996, and they're the only critics whose reviews really matter to us.

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Available on
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Need it now but short of cash? All we need is the first payment up front and the rest in easy monthly payments!

Fast approval.: We approve everyone, with very few exceptions, as long as we can verify your identity.
No interest. Ever.: It's just as if you paid the whole amount up front!
No paperwork. Nothing to track.: No application to mail or fax, no bills to pay. We automatically charge the payments to your credit card.

We'll wait on your money so you don't have to wait for your gear!

When you checkout, just click the Play as you Pay checkbox to indicate which installment plan you wish to use.

on most orders $49+

Just $2.99 on
smaller orders

Really heavy stuff might cost you a
little more

learn more

Why fight traffic and pushy salesmen when we'll bring your gear straight to your home, free of charge?

zZounds free shipping is really free!: No hidden charges or hassles on returns.
Fast, reliable delivery: We have warehouses on both coasts, so most shipments arrive in 3 days or less.
We don't collect sales tax. Bonus!: Only NJ residents pay tax during checkout.

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