QSC RMX 2450a Power Amplifier

Brand:| Model: RMX 2450a
The recently facelifted RMXa Series power amplifiers continue QSC's tradition of value, audio performance, and bulletproof reliability.
  • Compact size
  • 1/4" (6.3mm) TRS, XLR and barrier strip balance inputs
  • Binding post and Neutrik Speakon® outputs
  • Front mounted gain controls for easy access
  • Selectable low-frequency filters (30 Hz or 50 Hz) protect speakers and increase headroom
  • Signal and clip LED indicators to monitor performance
  • No changes in performance from the popular RMX series
Part # 
Weight: 50.5 lbs.  
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List Price$869.99
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Part # 245-694
Qty:  EA
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Product Details

QSC RMX 2450a Power Amplifier

The new RMXa Series amplifiers from QSC offer true professional quality performance at a new affordable price. This power amplifier's compact chassis is only 2 rack spaces high and less than 16" deep. XLR and 1/4" balanced inputs and Neutrik Speakon® and binding post outputs allow users a convenient choice of connectors, while user-defeatable clip limiters and selectable low-frequency filters optimize sonic performance.

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 RMXa 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
RMXa 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) and a ruler-flat frequency response. SMT (Surface Mount Technology) triples small-signal component density, enabling QSC to pack up to 2,400 watts of power in a chassis only 2 rack spaces and less than 16" deep. And unlike other designs, RMXa output devices are direct-mounted to the heat sink for optimum thermal coupling and cooling.

Specifications: • Power output, stereo mode (EIA 1 kHz, both channels driven): 500 watts x 2 (8 ohms); 750 watts x 2 (4 ohms); 1,200 watts x 2 (2 ohms) • Power output, bridged mono mode (EIA 1 kHz): 1,500 watts x 1 (8 ohms); 2,400 watts x 1 (4 ohms) • Distortion (typical): <0.02% • S/N ratio (20 Hz - 20 kHz, 8 ohms): 100 dB • Input sensitivity @ 8 ohms: 1.23V • Voltage gain @ 8 ohms: 50x (34 dB) • Output circuitry: Class H • Dimensions: 3.5" (2RU) H x 19" W x 15.9" D • Weight: 44.5 lbs.

Product Specifications
  • Power Output (RMS Per Channel @ 8 ohms)500 Watts
  • Output Channels2
  • Weight Range50 to 59 lbs.
QSC RMX 2450a Power Amplifier
  • BrandQSC Audio
  • ModelRMX 2450a
  • Part Number245-694
  • UPC684284062826
  • Product CategoryPower Amplifiers - Live Sound
  • Unit of MeasureEA
  • Product Rating
    (8 Reviews)
  • Weight50.5 lbs.
  • California Prop 65

    Warning: California residents only. Please note per Proposition 65 that this product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

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QSC RMX 2450a Power Amplifier
QSC RMX 2450a Power Amplifier is rated 4.5 out of 5 by 8.
Rated 5 out of 5 by from This amp makes money, keeps my rep growningI have DJ'd parties at arenas with one on and one off. Even at the end of the night with the speakers screaming, the bass thumping, they are running cool to the touch, and the clip lights ever so faintly flash. The sound quality is such that I would consider them for home use if my Paradigm monitors would accept a speakon cable. Might consider making the mod one of ther other reviewers mentioned. The fan is loud because it is pro grear. not for playtime. these make money.
Date published: 2011-12-25
Rated 5 out of 5 by from Rock Solid, Great SoundI own several amps from the RMX line and they all share a few things in common. For one, their output power and sound quality is as good or better than any other amp in their class. Also, their overall build quality is surprisingly tough for an amp in this price range. Many people have commented that the RMX series are "built like a tank" and I definitely agree. The last thing they all share in common is also the only negative thing that I can say about an RMX series amp: their cooling fan is WAY too loud for any installation where you want the amp to be silent (home theater for example). However, this is easily remedied by replacing the stock fan with a 24-volt Panaflo (or equivalent) cooling fan. Once the fan has been modified (fairly easy to do), the amp is almost dead silent and performs like a champ.
Date published: 2010-11-16
Rated 5 out of 5 by from would buy nothing but QSC's for my needsI have been running (3) 2450's in my amp rack for my (2) JBL double 15 SF25's..my (2) Madison 18" subs and my (4) Yamaha 12" monitors for about 8 yrs. no issues whatsoever and we play loud R&R so they take a lot of punishment. I would never buy anything else.....I will agree the fans are a bit noisy but with us that is not an issue. Great bang for the buck in my book. :-)
Date published: 2010-11-02
Rated 5 out of 5 by from Decent power amp.At 4 ohms each, my customer's two sub-woofers can gobble up everything this amp delivers.The sound is powerful, pleasant, and the power is fairly abundant. I say "fairly" because I can clip this amp with ease.I'd like to have more headroom--we'll be purchasing another pair of subs and a power amp to compliment the aforementioned arrangement. Yes, he likes his bass.
Date published: 2009-12-05
Rated 4 out of 5 by from Great valuePlenty of power, quality construction, only downside is the fan is noisey. Silent fan technology is not rocket science, QSC should improve this part of their product.
Date published: 2009-10-21
Rated 3 out of 5 by from It's OkIt feels solid. Good construction. Good sound quality. Fan is noisy for home theater use or quiet environments, but I don't think this really matters when shopping for a high power amp. I do believe that this amp is short on power. It may only deliver 2400 watts at 1000hz. I can very easily get the clip limiters to stay on when driving subs in 4 ohm mono load. It does shut down due to thermal conditions when pushed. The volume goes down and out for a few seconds then comes back on. The price isn't bad. No serious problems or repairs after more than 5 years of use. I would recommend it for typical or moderate use. If you need something that can really take long term abuse without shutdown, I would suggest another product.
Date published: 2009-06-01
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Product Q&A

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QSC RMX 2450a Power Amplifier

hi how can i obtain the circuit diagram of Qsc 2450 power amplifier

Asked by: soumd
This is something you will only be able to get directly from QSC or a certified QSC repair facility.
Answered by: MattP
Date published: 2014-10-16

Hi, I own this product and recently it's on/off switch broke. Do you sell it individually? please let me know

Asked by: gmlandscaping
This requires a bit more information in order to proceed. Please contact our tech support for more help with this question, tech@parts-express.com or 800-338-0531 x1.
Answered by: MattP
Date published: 2014-08-19

hi .,may i just ask if this amp can operate in 220-230v here in the philippines?how i can possibly get a 220v amp of this version? thanks a lot...

Asked by: arvin
Unfortunatley this is only available in the 120 VAC input and we do not offer the 220V version.
Answered by: MattP
Date published: 2014-08-11

What is the diference between QSC RMX 2450 & RMX 2450a

Asked by: Keyush
The only difference between these models are purely cosmetic. The "a" model has replaced the older standard 2450 with some new looks and that's all.
Answered by: MattP
Date published: 2014-03-31
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