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CCI Solutions > Sound > Audio Amplifiers > QSC RMX 5050

QSC RMX 5050 Power Amplifier

Power amplifier 1050W, 8 ohms

QSC RMX 5050
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Extremely high power and a tremendous value.

The new flagship of the RMX line, the RMX 5050 provides extremely high power and represents tremendous value. This power amplifier is perfectly suited for a wide range of sound reinforcement applications including professional touring, performing musicians, and mobile entertainers. The RMX 5050 is reliable, delivers high levels of sustained power and the high quality audio performance you are looking for.

Features include:
• Advanced thermal performance, delivering 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 ¼” (6.3 mm) TRS, XLR, and barrier strip inputs for maximum flexibility
• 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
Specifications for the QSC RMX 5050
STEREO MODE, both channels driven
8 ohms
FTC 20 Hz - 20 kHz 0.01% THD 1050 W
EIA 1 kHz 0.1% THD 1100 W
4 ohms
FTC 20 Hz - 20 kHz 0.01% THD 1600 W
EIA 1 kHz 0.1% THD 1800 W
2 ohms
FTC 20 Hz-20 kHz 0.1% THD 2000 W
EIA 1 kHz 1% THD 2500 W
8 ohms
FTC 20 Hz - 20 kHz 0.01% THD 3200 W
EIA 1 kHz 0.1% THD 3600 W
4 ohms EIA 1kHz 1% THD 5000 W

Distortion (SMPTE-IM) Less than 0.02%
Distortion (Typical)
20 Hz-20 kHz: 10 dB below rated power Less than 0.02%
1 kHz and below: full rated power Less than 0.02%
Frequency Response 20 Hz - 20 kHz, 8 ohms, LF filter bypassed, +0/-1 dB
5 Hz - 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 ohms balanced, 10k ohms unbalanced
Input Sensitivity 1.42 Vrms for 1050 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)
120V models require 20 Amp service and are supplied with a NEMA 5-20 plug on the cordset.
Height 5.25" (13.3 cm)
Width 19" (48.3 cm)
Depth 15.9" (40.39 cm)
Weight 75 lbs. (34.02 kg) net
87 lb (39.46 kg) shipping

Video Transcript

"QSC has specialized in providing really high value amplifiers to the market. Their amplifiers have been extremely reliable. They carry a 6 year warranty. And they've got 4 or 5 different series so it's really kind of difficult to tell which series you need to use for a particular application. So, in this video we're going to take a look at 4 of their series, tell you what each amplifier was developed for, a little bit about the differences, to help you make a selection.

So the first one we're going to look at is the RMX Series. The RMX Series have been used for years as a high-powered, robust amplifier both for touring, for portable sound and in some installations. The RMX has a large toroidal transformer that's designed to deliver a lot of current and that current is going to give you the ability to run speaker load at 2 Ohms so you can take 2 or 4 speakers and combine them together and have a load of 2 ohms onto the amplifier or to bridge,iIf you need even more power. So you can bridge 2 channels together. The way that you bridge 2 channels together is to go ahead and put these: you take 1 channel's hot and the other channel's hot and you run it off of that. So you've got both channels working for you.

On the RMX amplifier you can see it's very straightforward on the front panel. You've got external volume controls which some guys don't like for installation or permanent projects and I understand that. We try and either take the knob off or disable it in some way. And, if you really don't like that then you go to a different series we'll show you in just a bit. On the back panel you have either the Speakon connector or barrier strips. And a lot of jurisdictions don't like the barrier strips any more for permanent installations. So you go with the Neutrik type of a connection. You've got dip-switches, so you've got a clip limiter, 30 Hz filter, but the RMX Series, rugged, reliable 2 ohms, lots of current. It's very deep. And it's very, very heavy. That toroidal transformer carries a lot of weight.

So now if you're looking for something that's a lot lighter, you want to take it on the road, then you're going to look at the PLX2 Series. The PLX2 Series uses a digital switching power supply. The digital switching power supply reduces the weight. You don't have that big transformer in there. So I'll show you this amplifier. I can pick up. It's extremely lightweight. So, your racks don't need to be as heavy duty. The weight that you're carrying around with you is a lot less. The PLX2 is ideal for touring. You can see it's very, very simple on the back. It has XLR or 1/4 inch inputs, all balanced and your Speakon connectors on the back. On the front, 2 volume controls. It's a straight forward amplifier. That's lightweight, digital switching. Again, it has a 6 year warranty. And, you'd want to keep these loads in the 4 to 8 Ohm range, uh, because of the digital powering supply, but it will go to 2 Ohms. Not as much current as the RMX, it will go to 2 Ohms. I just tend to prefer to keep digital switching power supplies a little bit higher in terms of my loads.

Now the GX Series: the GX Series was designed to be a super economical amplifier, running in to 4 and 8 Ohm loads, the typical "sound on a stick." I've got a couple of 2-way 12-inch or 2-way 15-inch speakers on a stick with a subwoofer perhaps. So these amplifiers are not designed to go down to 2 Ohms where you've got maybe 4 speakers, or 6 speakers combined on 1 circuit. They are lighter weight and they're shorter too. So you don't need as deep of a rack. On the back panel again, you've got Speakon, and uh that's what I tend to use and like. You've got the XLR and the 1/4 inch. On the front, again, it's very simple. You've got your control knobs. So if you need a very economical amplifier, you're running "sound on a stick," uh, 4 Ohms or 8 Ohms, then the GX Series is a great choice. Finally, to the CMX Series... And the CMX Series, it has 4 models so it's designed primarily for the contractor. You've got these Euro-blocks which means you can run the speaker cables right in here. They meet all your UL installation requirements. You can use the Speakons if you want. You've got XLR inputs and barrier strip, again, designed for the contractor, and a recessed volume control, so that you can have, you can convert this up. You can go ahead and put a plug in there and it will cover that volume control. So somebody, uh uh another user coming in to the rack won't be able to adjust that These have built-in protection again 6 year warranty. They will go down to 2 Ohms, so they have virtually the same technology, heavy-duty toroidal transformer and current delivery capability that the RMX series did.

Extremely high current, heavy-duty, robust, heavy amplifier designed for installations. So again, the CMX Series, great for installations... the GX Series, great for "sound on a stick" portable applications. The PLX2 - digital power supply, designed for light-weight touring, and the RMX, just a good all round heavy current amplifier, designed for portable applications or installations. That is 4 of the lines of the QSC amplifiers, and if you have any questions give us a call at CCI Solutions. We'll help walk you through the right choice for your application."
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Retail Price $1,779.99
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CCI Price $1,699.99
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Item Number  QSC-RMX5050
Vendor Part RMX5050
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