I have a panasonic 7301u and just now seen the "sbc-sw" setting in the manual. Would I want this setting on or off when running indepent subwoofers? I couldnt exactly make sense of the manual. It just described what it could be used for and how to turn it off. Not what on/off was meant for.

The directions are as followed.

The rear speaker can be used as a substitutional subwoofer when a subwoofer is not connected. Holding down the ___ button (sbc-sw) for 2 seconds or more toggles sbc-sw on and off.

Note: If ON is selected, the settings of subwoofer level adjustment and subwoofer low pass filter are activated.