where is ref level on the realitine scale

ok relative, third time is a charm. is 0dB ref or max? or is there no set number. the reciever is thx.

forgot to include sub, klipsch ksw12, in my system. also typo on the cerwin vega RE 30. all cables and cords are decent quality. onkyo dv-cp702 dvd changer.

BTW, the re-30"s (4 ohms) rock when connected to the carver 100 wpc.

thanks everybody, and sorry for rushing through the question.
i am talking about ref level while watching a home theater. i dont know if anybody has experance with onkyo receivers but it came with a mic for speaker setup. it played loud white noise from all speakers twice and gave feedback and option to set. it said i had no sub. does that mean i need to turn it up? the reciever set the 3 front speakers +3 dB to keep up with the effeciant rear ch (96 dBW). would that make -3 my ref level? also can you really turn it up that loud without damage?

system:

onkyo tx sr 702
carver tfm-15 front 2 ch
nht 2.5i main (86 dBW)
polk rti38 center (temp)
cerwin vega te 30 rear (96 dBW)

thanks again everybody