I'm probably going to get beat up or shot for this comment but here goes anyway. I have set up my speakers-M60s, VP150, QS4s & SVS sub with a Denon 2105 receiver using my ears and the receiver test tones only and have adjusted the speaker levels.

I read alot about the tweaking process using an SPL meter & setup CD. Is this really going to make that much difference in the sound quality, etc......