ok this is what i got the 5 surround speakers are 4ohm and on the B speaker selection i got speakers that are 4-8ohm so these are the settings in the manual i just need help on what seting to have them on. main a or b 4ohm a + b 8ohm cetre rear 6ohm rear 6ohm or main a or b 8ohm a + b 16 ohm center rear 8ohm rear 8ohm the switch is on the back of the unit, what one do u think it should be set to for my speakers. thanx for any help. BJ. i wish i knew how to paste i piccy in here it would on been easier.lol.