Need Help on Dedicated Listening Room

Park your car outside convert your garage into your music room. Space to properly position speakers is extremely critical. The room is responsible for at least 50% of your overall sound quality. I can make 10 K of equipment in a 20x23 room sound better than 20 K of equipment in the room size your trying to use.

Now, now....
You CAN do it. Arrange a VERY tight nearfield triangle, with GREAT 2-way monitors that don't try to reinvent the bottom octave. Any of a bunch of 5 or 6" 2-ways would work.
My favorites are the Revel M20 ($$$) and the Spendor S3/1p
($$). Try to avoid too-low efficiency LS3/5 or Dynaudios, though. The trick is to have a seamless crossover and thus great coherence between the drivers. You won't accomplish this with ANY 3-way in your short listening distance, so don't try. At a lowest system price I'd VERY definitely try the latest KEF Uni-Q ONE for wide-spot nearfield use, as you won't have head-locking syndrome or such severe sit-stand spectral changes. Plus it's a beauty in cherry.
Finish the system with an NAD 541i ($400 street) CDP and a
good integrated (Audio refinement Complete $600 used), a couple of very nice Canare ICs (Markertek), solid Plateau V23 sand-filled steel stands ($200) and you'll be done at
at about $1700! Can't imagine a finer sub system. My upgrade path would start with Nordost Blue Heaven on the CDP and speakers for better transients and extension, and then the Spendors (NOT the S3/5...only the S3/1p or the SC3 turned sideways (like one and a half S3/5's).
Move EVERYTHING (the speakers, your listening seat, all the stuffed furniture, sidewall treatment, rugs) around a lot until you lock in some magical music-making. THEN knock down that wall as a last resort! Have fun.

The Alton Everest books are great--already mentioned. There are two things I would add to some of the above comments. First--I am biased on both of these as we manufacture one and sell the other. The first is the PARC parametric adaptive room compensation system that works on bass modes only (it does not operate above 350 Hz and we generally recommend that it only be used below 200 Hz). You can see more about it at www.rivesaudio.com/PARC The second is the CARA software, which is very nice to simulate the changes of speaker placement and different treatment options.

Foreverhifi2000, it's a closed in bedroom. I have not learn how to describe the sound yet. It may be just as you described. All I can say it's really hard to listen to. I feel like sitting inside a box with all the booming sound around me.
Mejames, no can do with the gargage. I intended to stay married.
It seem that the best solution for me is to take back my living (music) room! I will get Everest's book and CARA software as you all suggested and improve on my larger music (living) room. Thank you!

Inherently, especially with lesser experience in dealing with small room acoustic challenges(like you said,BOOMY!), it's often easier to get better overall response and balance from your speakers in a larger room..I agree. There are usually more possible choices in which to place speakers and seats which will yield acceptably good sound for most. The larger acoustic space(depending on how large) will have better spacing of bass modes, making a good placement for full range speakers easier to achieve usually, eVEN with luck!
still, if you do need to use the smaller room, it's workable. It's just a bit more challenging, and requires tigheter tollerances and speaker placment/seating options.
Again, you could EQ out a bass woofer(s) in that small room, after careful speaker set up, and get some dynamite results! Rives sells the PARC, and there's other good Parametric's out there for not to much that will also work.
Infact, most audiophiles can get some spectacular results in small rooms if they employ some good placement strategy and experimentation, and integrate a good EQ into their BASS woofer!(biamp,sub/sat,etc)
Good luck