Alpine PXE-H660 Owner's Manual page 19

SETUP PROCEDURE
16. "PUT MIC POS3 PRESS C"
Reposition the microphone to position 3 in the vehicle. When ready, exit the vehicle.
Press "C" on the remote control to continue. The MultEQ LED will be illuminated
steady green while measuring position 3. When the MultEQ LED starts to blink
slowly again, Position 3 measurement is complete; continue to the next step.
Continue this process for the 4th MIC position. Four calibrated positions are required
for proper MultEQ response.
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