With my old receiver, I originally wired the speakers directly to the PB10 and then ran my L/R speakers out from the sub. I hooked up my new receiver yesterday, which has a subwoofer dedicated line. I used a mono audio hookup from the subwoofer out to the PB10. I lost the PB10 manual. Which switches on the back of the PB10 do I use now? Thanks alot for the help.