08-16-08: Acdvd asked:
"Do you mean the closer you are to the wall the less bass node/hump you will get?
How far should they be from the rear wall?"
It's coomplicated. My left speaker is 16" from the rear wall, but the right is 14" due to irregularity in the shape of the wall behind it. If you move them closer the bass humps up and the midrange gets muddy. If you pull them a few inches further out the same thing happens at slightly different frequencies.
Before Soundings HiFi did my Master Set for me I'd pulled them several feet out into the room, because I had trouble getting both solid bass and clean midrange with great imaging. I was getting clean midrange and great imaging put giving up a ton of bass. Also, though I didn't realize it, the mids were "shouty", causing me to run at levels several dB lower than I do after the Master Set.
If you really interested in this, see the separate thread about the Sumiko Master Set. There's a link in my profile. If you set yours at 16" I'd consider that only a rough starting point.
Dave