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QSC RMX 1850HD Professional power amplifier

Item# 81999
QSCRMX 1850HD Professional power amplifier


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Our Price: $599.00   
List Price: $750.00
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Improved thermal performance for higher continuous power in 2-ohm or 4-ohm bridged applications.

The RMX Series amplifiers give you clean, dynamic power with the legendary QSC sound quality and reliability that pros depend on. The RMX 1850HD delivers 1800 Watts @ 4 ohms bridged mono, 900 Watts per channel @ 2 ohms stereo, 600 Watts per channel @ 4 ohms stereo and 360 Watts per channel @ 8 ohms stereo. The RMX "HD" provides improved thermal performance that gives you higher continuous power in 2-ohms stereo or 4-ohms bridged mono applications. This is an RMX "HD" Exclusive!

Hey, it's QSC! You can't go wrong! Order today.

Detailed Product Description

The RMX Series

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 RMX 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
RMX 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) & a ruler-flat frequency response. SMT (Surface Mount Technology) triples small-signal component density, enabling us to pack up to 2400 watts of power in a chassis only 2 rack spaces & less than 16" deep. And unlike other designs, RMX output devices are direct-mounted to the heat sink for optimum thermal coupling & cooling.

Proven Reliability
With over 30 years of building amplifiers for the largest touring companies and venues around the world, you can count on QSC's reputation for designing the most reliable amps available.

Detailed Product Features

  • Delivers 360W per channel into 8 ohms
  • 600W into 4 ohms
  • 900W into 2 ohms
  • 1,800W into 4 ohms bridged
  • High-current toroidal transformers
  • Independent user-defeatable clip limiters
  • Selectable low-frequency filters (30Hz or 50Hz)
  • Front-mounted gain controls
  • Signal and clip LED indicators
  • Balanced 1/4" TRS, XLR, and barrier strip inputs
  • Binding post and Neutrik Speakon output
  • Independent DC and thermal overload protection on each channel
  • 3-year warranty

Detailed Product Specifications

Detailed Rebate Information

 AvailableDescription
Rebate 10/31/2008 to 1/31/2009 Purchase a QSC RMX, PLX, or HPR series power ampflier or powered speaker between November 1, 2008, and January 31, 2009, and receive up to $150 cash from QSC! See rebate PDF for details!

Detailed Warranty Information

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4 found helpful, 0 found unhelpful.
all around great
Customer Rating


by nick 6/9/2006 8:45:33 AM
Musical Experience: live sound, & dj
Style of music: all
Hometown ct
Very strong lows, runs much cooler than other rmx amps, have a 850, and 1450 though they never overheat, they just get warm. Also seems to have a lot more push when driving 2 ohm loads. Really unbeatable for demanding situations which require 2 ohm stereo or 4 ohm bridge. If your running 8 ohms or 4 ohms stereo just go with the 1450 to save the $$$$ unless you need the extar headroom.


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