QSC rmx 1850hd

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) and 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 and less than 16" deep. And unlike other designs, RMX output devices are direct-mounted to the heat sink for optimum thermal coupling and 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" 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

- Frequency Response: 20 Hz-20 kHz, ±1 dB

- Damping Factor, 1 kHz and below: Greater than 300 at 8 ohms

- Input Impedance: 10k ohms unbalanced, 20k 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" (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: Stable into reactive or mismatched loads

- Load Protection: On/off muting, AC coupling (850, 1450), triac crowbar (1850HD, 2450, on each channel)

- Power Requirements: 100, 120, 230 VAC, 50-60 Hz

- Dimensions: 19" (48.3 cm) rack mounting, 3.5" (8.9 cm) tall (2 RU),15.9" (40 cm) deep (rack mounting to rear support ears)

- Weight: 20.2 kg net