Use the POLARITY switch to maintain proper acoustic summation with the main speakers. Listen to your PS subwoofer and main speakers with the switch on "Normal" then listen to the same material with the switch on "Reverse". Decide which way sounds better and leave the switch in this position. You should repeat this procedure if you move your PS subwoofer to another part of the room.
ALC PROTECTION CIRCUITRY Your PS series amplifier has a built in Automatic Level Control circuitry that comes on automatically when subjected to high input signal levels. It prevents the subwoofer driver from being damaged by accidental
GENERAL CARE
Use a damp cloth for cleaning your PS subwoofer cabinet. Do not use detergents or other cleaners.
TROUBLESHOOTING / SERVICE Your PS subwoofers should only be serviced by an authorized JBL repair station. Do not attempt to remove the grille. It is fixed and should only be removed by qualified personnel. Removing the grille may void your warranty. Woofers are replaceable by repair station only. Do not remove the amplifier from the cabinet. There are no user serviceable parts inside.
Before seeking service for your PS subwoofer, please
10