Setting up an Ambient sensing leveler with continuous sensing

Careful sense microphone placement is essential for optimum performance of the Ambient Sensing Leveler. Optimum microphone placement is achieved when the output of the speakers in the zone does not leak back into the sense microphone. This may not be practical in some facilities, so to avoid this problem, the Ambient Sensing Leveler must first go through a system calibration phase before it can accurately estimate the ambient level separately from the speaker leakage (returned through the sense mic).

Calibration should be performed after all speakers and microphones are installed and set at their final positions and settings. Moving a microphone or changing the level control on the power amp (or any device after the Ambient Sensing Leveler is in the circuit) will require the system to be recalibrated. Although it is not necessary to have a completely quiet room for calibration, a constant ambient level is required.