LSDDC Power Amplifier Interface Module for the V400



LSDDC Power Amplifier Interface Module for the V400

The LSDDC is an amplifier interface card for use with the M100, M200 and M400 Class-D Amplifiers in a V400 Amplifier Mainframe for Voice Alarm and Public Address applications.

Uniquely, it enables two circuits (A&B) to be fed from a single amplifier while still maintaining BS5839 Pt 8 compliance.


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Amplifier health monitoring is achieved.

Subsonic surveillance tone, automatic control of changeover to standby amplifier, loudspeaker line earth leakage monitoring, and loudspeaker line ‘End Of Line’ (EOL) monitoring. Relays in series with each output facilitate isolation of faulty speaker circuits.

Emergency sources to be switched directly.

The unit also supports a secondary audio input that enables emergency sources to be switched directly to the input of the power amplifiers.​

Loop return monitoring.

A second mode of operation allows loop return monitoring to be implemented or a single loudspeaker circuit can be fed instead of two, if required.​


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TitleVersionSizeDate addedDownload
LSDDC Datasheet 02368.35 KB27-08-2020 DownloadPreview

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