Bosch LBB4441-00 Loudspeaker Supervision Board

The board monitors the integrity of a loudspeaker. It works together with the LBB 4440/00 Supervision Control Board. The speaker status is communicated to the LBB 4440/00 via the existing loudspeaker cable. Loudspeaker and loudspeaker line monitoring without additional cabling Open-circuit fault detection Compatible with 100 V and 70 V loudspeaker lines Powering of the supervision-board from the power amplifier Communication is not affected by the audio signals on the loudspeaker line