Sound Absorption Behind and Between the Speakers?


Recently my system moved to a new listening room and I was not enjoying the sound very much. There is a window between and behind the speakers. Last night, I put three sound absorbing panels right in front of the window and added a couple salt lamps which illuminate the panels. The sound instantly became way better! I have a soundstage now! I am not sure why though. Do the absorbing panels really have that much of an effect? Or does the fact that I added the panels with the salt lamps give my mind a surface to project the soundstage on which makes a bigger difference? Bit of both?
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Glass rings. It is also probably acting as an early reflection point for both speakers. Sound from early reflection points is just barely delayed and blurs the overall sound ruining detail and image as you have discovered. If you find the early reflection point on the side walls you can make further improvement. Windows should always be covered. Bulky drapes work great. 
I know this topic gets very complicated, very fast, but why does the space behind and between the speakers make a difference to anything but bass -- if the speakers have forward facing drivers?

First reflection points on side wall, ceiling, floor -- I get why they might mess up soundstage, balance, etc. But behind the speakers -- how does that affect these things?

Your answer will be directly relevant to my situation because I have brick behind and between my speakers. I think it's not *that* pure a reflector but it's not a diffusion panel, either.
It’s a good question! I wonder if flutter echo between the glass and the wall on the opposite side of the room plays a role because you are right: most of the sound (at least at higher frequencies goes forward, not behind the speakers.