4-Channel Backup Amplifier Switch

The 1544BAS is a backup amplifier switching module capable of switching up to four (4) speaker loads from a primary power amplifier to a backup when a fault is detected. In standalone mode, the logic outputs of the primary amplifier are used to trigger the switching of each individual channel to the backup amplifier. In network control mode, switching is determined by the GLOBALCOM IED system monitoring subsystem ^{® .} In network control mode, multiple 1544BAS units can be used to switch multiple primary amplifiers to a single backup amplifier unit. When used this way, all switching logic is accomplished through network commands and logic inputs are not used.

The 1544BAS is powered by standard PoE and consumes a maximum power of 3 watts. If PoE equipment is not used or the unit is used in standalone mode, an input is provided for an external +48 VDC power supply. A green power indicator LED is included to show that the unit is powered on. Each channel has a yellow LED indicator that lights up when the channel is switched to the backup amplifier input.

When not in network control mode, each channel can be switched to backup by a contact closure on the corresponding logic input.

The 1544BAS is supplied in an enclosure that mounts on a DIN rail or bolts to a panel or wall to allow convenient installation near the amplifiers in the equipment rack.