GentleBender: you'd be surprised at what just these 4 panels are making as far as improving the overall sound in this room. this is minimal
treatment, to be sure, but the room is small. but, if you were to sit and listen to just one tune in this room without the
panels in there and then bring the panels back in and then listen to the exact same song again (at the same volume), you'd
then be convinced. (just walking into the room, closing the door and then clapping your hands a couple of times with the
panels in there let's you know immediately that the high-pitched reflections and echoes are being noticeably tamed, compared
to how this room sounds without the panels in there).
ACHiPo: after checking out your thread "help with REW", you're really in a whole other league with what you're doing, compared to me. my
set-up is more basic and modest compared to quite a few here on A/C. so, the differences that you'll be realizing as time goes on
and you get your room "dialed-in" will be exponentially greater than the results i'm seeing. so, no real sense in me taking a "cadillac"
approach, to what essentially is a "buick" set-up.
but, i've been pleasantly surprised so far with the improvements that i've been able to make, even in my admittedly more
"demure" listening enviroment (compared to some). it's been an interesting and rewarding exercise so far.
and i'm always learning more from other folks here on the board who post and share their experience.