Meyer Sound M-1A Processor

Optimized for the UM-1A and UPA-1A loudspeaker and pre-aligned at the factory, the M-1A contains an electronic processor with frequency response and phase response alignment circuitry, and Meyer Sound’s exclusive SpeakerSense™ driver protection circuitry, incorporating both peak and RMS signal limiting. A single-channel device operating at line level, the M-1A is the final component in the signal chain before the amplifier. SpeakerSense driver protection circuitry protects the UM-1A loudspeaker components from damage due to overheating under high power conditions. This unique circuit continuously monitors the power applied to the UM-1A drivers, and individually limits the high-frequency and low-frequency processor outputs when the safe operating limits of the drivers are exceeded. Until the onset of overload, the SpeakerSense circuitry has no effect on the signal. Also provided is a switch-selectable Safeguard function, which widens the safety margin of the system and is intended to be used when extended periods of over-load are anticipated. The Safeguard switch and other setup controls are located behind a cover plate on the M-1A front panel, providing a means of securing the system installer’s presets.