RMX850 Power Amplifier

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The QSC RMX850a Power Amplifier is a powerful 2RU rack-mountable unit designed for live sound reinforcement applications. Delivering 300 watts per channel at 4Ω, this amplifier features two Class AB output channels that can operate in either stereo or mono bridge mode.

Engineered for superior performance, the RMX850a utilizes high-current toroidal transformers, which help reduce noise and provide better efficiency when driving a 2-ohm load. To further enhance the audio quality, the amplifier incorporates independent, user-defeatable clip limiters, which minimize distortion and include LED indicator lights to monitor the signal presence and clipping.

Equipped with front-to-rear cooling vents, the amplifier's chassis is designed to ensure effective heat dissipation. Additionally, the unit offers selectable low-frequency filters at 30 Hz and 50 Hz, which help protect speakers from bottoming out and improve headroom when driving mid and high frequencies.

For easy access, the front panel features two gain control knobs, and each channel is protected by dedicated DC and thermal overload circuits. The rear of the unit provides a versatile array of inputs and outputs, including balanced 1/4" and XLR inputs, as well as Neutrik Speakon and touch-proof binding post connections.

The power handling capabilities of the QSC RMX850a are impressive, delivering 200 watts per channel at 8 ohms, 300 watts per channel at 4 ohms, and an impressive 430 watts per channel at 2 ohms. In bridge mono mode, the amplifier can output 600 watts at 8 ohms and 830 watts at 4 ohms.

To keep the amplifier and its associated rack components cool, the unit is equipped with low-noise variable-speed fans that draw air from the rear and expel it through the front, ensuring a consistent and efficient cooling solution.

Overall, the QSC RMX850a Power Amplifier is a versatile and high-performing unit that combines power, flexibility, and advanced features to deliver exceptional audio quality in live sound reinforcement applications.

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