• 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 line
The board monitors the integrity of a loudspeaker line. The boards work together with the 8003030 (LBB4440/00) Supervision Control Board to monitor the status of the loudspeaker line and all of its branches. The line status is communicated to the Supervision Control Board via the existing loudspeaker cable.