Speaker placement and soundstage

Rabbit hole has been sighted and I'm half way down!  This is a fun part of the hobby, though it can be frustrating too.  I skimmed over the thread and there is some good advice from the community.  

One thing that I didn't see mentioned is giving the speakers time to settle in after they are moved.  Your didn't give us any info on your system but the more resolving the speakers are the more they will need time to settle down and couple with the room after moving.  Not too long ago I made an adjustment and initially didn't like the results but after a couple of weeks got what I was looking for.  It's really amazing how it wasn't there and then after some time "bingo"!  Good luck in the rabbit hole.    

Oh how nice it would be to have a room that offered options for speaker placement. One day. Right now there is the credenza where they have to go so we do our best. 

There is no such thing as "pressuring" the room. Sound waves are a combination of alternating high and low pressure regions.

"Pressurizing" a room usually means enhancing rather than decreasing the effects of room resonances. One needs to decrease the effects of room resonances, not increase them.

The geometry of the room dictates where these resonances are. Placement of furniture, rugs, wall tapestry, fiberglass absorbing "traps" does not change the resonances, those are fixed by the room resonances. All one can do is to decrease the effects of the room resonances, both the peaks and the nulls. Physical traps are very effective, but not the only solution. Proper placement of the traps with respect to the optimized  listening and speaker locations, combined with judicious use of equalization (analog or digital) is the way to create a bass sound that is not boomy, but smooth, treating all frequencies equally.

@toddsyr, thanks for those links. They came in very useful with my speakers. Altec 311/60s on top of LaScala bass bins. Now my horns are dialed in correctly. 

@danmar123 You're welcome but I learned about it right here on Audiogon. The method makes a nice difference for sure and it's free! Once placement has been done then you do the room treatment.  It then gets even better.