American Musical Supply
American Musical Supply
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QSC RMX1850HD Power Amplifier

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Product Description

The QSC RMX1850HD Power Amplifier delivers unmatched performance, clean, dynamic power, legendary sound quality and reliability that's needed for anyone using a power amp. QSC combined their rugged, high-output designs with the latest circuit technology to deliver unmatched performance at an affordable price.

The QSC RMX1850HD Power Amplifier has balanced XLR and 1/4 inch TRS inputs. Outputs include binding posts and Neutrik Speakon connections. These power amps are only 2 rack spaces tall and 15.9 inches deep. Other features of the RMX1850HD include ultra low distortion (.05% THD), a low-noise variable speed fan with rear-to-front air flow to keep your amplifier and racks cool, and selectable low-frequency filters to protect your speakers and increase headroom. QSC power amps are backed by a 3-year transferable warranty.

Purchase an RMX Series Amplifier from AMS and Recieve QSC's
QSC 6 Year Extended Warranty
after registering your product at QSC.com

The QSC RMX1850HD Provides improved thermal performance for higher continuous power in 2-ohm stereo or 4-ohm bridged applications (a RMX 1850HD exclusive!). Specs include: 360W per channel @ 8 ohms, 600W/channel @ 4 ohms, 900W/channel @ 2 ohms, 1150W bridged mono @ 8 ohms and 1800W bridged mono @ 4 ohms.

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 inches deep. And unlike other designs, RMX output devices are direct-mounted to the heat sink for optimum thermal coupling & cooling.

Comprehensive Features
The RMX Series is packed full of professional features that increase performance and flexibility:
  • The RMX 1850HD provides improved thermal performance that gives you higher continuous power in 2-ohms stereo or 4-ohms bridged applications (a RMX 1850HD exclusive!)
  • Independent defeatable clip limiters reduce distortion without sacrificing peak performance
  • Selectable low-frequency filters boost system response, protect speakers and ensure low-end tightness by more precisely matching the amplifier's range to the loudspeakers
  • Barrier strip, XLR and 1/4 inch balanced inputs plus Speakon and binding post outputs provide easy connections
  • Low-noise variable speed fans with rear-to-front air flow keep amplifiers and racks cool
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.

Product Specifications
RMX Series Specifications
  • Distortion (Typical):
    • 20 Hz-20 kHz: 10 dB below rated power, Less than 0.03% THD 4 and 8 ohms
    • 1.0 kHz and below: Full rated power, Less than 0.03% THD 4 and 8 ohms
  • Frequency Response: 20 Hz-20 kHz, +/- 1 dB, -3 dB points: 5 Hz-50 kHz
  • Damping Factor, 1 kHz and below: Greater than 300 at 8 ohms
  • Input Impedance: 10 k ohms unbalanced, 20 k ohms balanced
  • Input Clipping: 10 Vrms (+22 dB)
  • Cooling: Continuously variable-speed fan, rear-to-front air flow
  • Connectors, each channel
    • Input: Active balanced; barrier strip, XLR and 1/4 inch (6.3mm) TRS tip and XLR pin 2 positive
    • Output: touch-proof binding posts and Neutrik Speakon
  • Controls:
    • Front: AC switch, Ch. 1 and Ch. 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
  • Amplifier Protection:
    • Full short circuit, open circuit, thermal, ultrasonic, and RF protection
    • Stable into reactive or mismatched loads
  • Load Protection: On/off muting, AC coupling (850, 1450), triac crowbar (2450, on each channel)
  • Dimensions: 19 inches (48.3 cm) rack mounting, 3.5 inches (8.9 cm) tall (2 rack spaces), 15.9 inches (40 cm) deep (rack mounting to rear support ears)
  • Power Requirements: 100, 120, 230 VAC, 50-60 Hz
* @ 120VAC, both channels driven; multiply current by .5 for 230V units.

Helpful Info about the Manufacturer
Phone:  800-772-2834 Warranty:  3 Years on New Amps; B-Stock is 1 (one) Year only!
billy sonic from indianapolis indiana united states
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qsc 1850hd can do it !!!
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i think this may be the best amp on the market to day even if spend more money
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