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Item # J01722 | Customer Ratings: Ratings ( 5 Based on 1 reviews)

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QSC RMX2450a Power Amplifier
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      QSC RMX2450a Power Amplifier (J01722)
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Power and punch in two rack spaces.

The RMXa Series amplifiers from QSC offer true professional-quality performance at an affordable price. The 2-rackspace model RMX2450a features output power of 450 watts per channel at 8 ohms. It has a compact chassis less than 16” deep. RMXa amplifiers include a comprehensive set of features including XLR and 1/4” balanced inputs, Speakon® and binding post outposts for convenient connectivity. User-defeatable clip limiters and selectable low-frequency filters optimize sonic performance.

The RMX amplifiers are among the most reliable products in pro audio. It takes some real effort to blow these things up. The RMX design has had a long time to be tested in the marketplace and the results are in. This amp is a beast. Long hours, long roads, hot environments, indoors, outdoors, you name it. The RMX amps are among the best built, most reliable power sources you will find.

QSC RMX2450a Power Amplifier Features:

  • Compact size
    High-current toroidal transformers
    Independent user-defeatable clip limiters
    Selectable low-frequency
    Balanced 1/4” (6.3 mm) TRS, XLR, and barrier strip inputs
    Touch-proof binding post and Neutrik Speakon® outputs
    Independent DC and thermal overload protection


QSC RMX2450a Power Amplifier Specifications:

  • Stereo Mode (both channels driven):
    8O/ FTC 20 Hz – 20 kHz / 0.1% THD: 450W
    8O/ EIA 1 kHz / 0.1% THD: 500W
    4O/ FTC 20 Hz – 20 kHz / 0.1% THD: 650W
    4O/ EIA 1 kHz / 0.1% THD: 750W
    2O/ FTC 20 Hz – 20 kHz / 1% THD: --
    2O/ EIA 1 kHz / 1% THD: 1200W

    Bridge-Mono Mode
    8O/ FTC 20 Hz – 20 kHz / 0.1% THD: 1300W
    8O/ EIA 1 kHz / 0.1% THD: 1500W
    4O/ EIA 1 kHz / 1% THD: 2400
    Signal to Noise (20 – 20 kHz) 8O: > -100 dB
    Distortion (SMPTE-IM): <0.02%
    Input Sensitivity at 8O: 1.23V (+4.0 dBu)
    Voltage Gain: 50X (34dB)
    Output Circuitry: 2-tier Class H
    Power Requirements: 6.3A
    Typical, 1/8 power pink noise at 4O*: 15.6A
    Supplied Plug Type, 100/120V: NEMA 5-15
    Supplied Plug Type, 230V: CEE7/7
    Weight: 44.5lb
    Frequency Response : 20 Hz – 20 kHz: +0/-1 dB -3 dB points: 5 Hz and 50 kHz (LF filter bypassed / 8O)Damping Factor (1 kHz and below)
    Input Impedance: 10K ohms unbalanced, 20K ohms balanced
    Input Clipping: 10 Vrms (+22 dBu)
    Cooling: Continuously variable speed fan, back-to-front air flow
    Connectors (each channel): Input: Active balanced / 3-pin Euro-style detachable terminal block and XLR (pin 2+)
    Controls: Front: AC switch / Ch. 1 & 2 gain knobs
    Rear: 10-position DIP switch
    Indicators: Power-on: Green LED / Signal: Yellow LED (1 per channel) / Clip: Red LED (1 per channel) " Protect: Red LED
    Amplifier Protection: Full short circuit, open circuit, thermal, ultrasonic, RF protection. Stable into reactive or mismatched loads
    Load Protection: Turn-on/off muting / AC coupling (850, 1450) / Triac crowbar (1850HD, 2450, 4050HD, 5050) on each channel
    Dimensions: 3.5” (8.9 cm) tall / 2 rack spaces
    Power Requirements: 100, 120, 230 VAC, 50 – 60 Hz (factory configured)






Product Reviews
(Based on 1 reviews)
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  • Heavy Duty & Reliable

    As reviewed by Darryl on 11/16/2014

    I'm a long time user of QSC power amps, dating back to the mx 1500 I once owned. My choice to grab the latest version of the RMX series was because I needed another heavy duty amp to push a pair of 18" subs. I'm using an RMX 1850hd to handle a pair of 15" 2 way EV's, so it only made sense to me to stick with a brand that has become a tried & true product for me. As far as weight is concerned, it's definitely on the heavy side, but that's ok...I never was a wimp when it came to lifting heavy objects, I consider it my moment of getting some exercise. So if you don't need the extra fillings that are featured in some of the more upper scale power amps, then you won't regret going with the RMX 2450a. It's destine to become another legend in the QSC line up.

    1 of 1 people found this review helpful.
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