Voice Alarm


The M400 is one of a range of high efficiency Class D Amplifiers for Public Address and Voice Evacuation applications. The amplifier is part of a modular system, and is housed in a V400 Amplifier Mainframe.

The Amplifier Mainframe can carry various amplifier types, and carries interface cards which contain the amplifier’s monitoring electronics. The M400 will deliver 400 W to a 100 V loudspeaker line, even with the Amplifier Mainframe’s 230 V mains supply absent and right down to a 21 V battery supply voltage.

The unique design negates the need to ‘sleep’ the amplifiers when in quiescent state. This improves efficiency and reduces heat dissipation.