First question answered, thank you, Second question though still have a few. I read that when doing this the relative volume scale should be set to 0db, So with that do they mean "relative" scale on avr means a scale like my marantz and many avr's go form -79db to +6db? I am confused by the word relative scale. Or should I start the pink noise for center, turn up the volume until say center channel is at 75db on spl meter and then match the other speakers? Cause I could be different on different avr's or is there a standard? Thanks again all for the info.