Most effective Room Treatment for slap echo, etc


I am unfamiliar with room treatments products to eliminate slap echo, and to improve focus and imaging. I have no space in my living room to place two upright book cases stuffed with books to dampen down the room. Therefore, need advice and suggestions for a simple and reasonably priced room treatment solution. A member recommended Auralex. I rent my space,so wall or ceiling panels must have easily removable adhesive and not strip paint or stucco off the walls. Thank you, Jim
sunnyjim
Kevinzoe, I did use some of step #1 by closing the slat blinds behind the speakers in the relocated long axis location. That, in combination with the one large bookcase have eliminated or lessened the slap echo, at least in the section of the room----there is more clarity at higher volume. The RPG diffusers have not been investigated because I am sorting out other other recommedations. I did make one change. On Thursaday, I got an earful of two CD's with the old speaker wire. On Friday, I was able to install the AZ Hologram II speaker cable which made a moderate to big difference---sound is warmer with a little less bite in the highs, bass sounds a tad slower. I could say more, but must run. If you have the time, check out Misc. formum. I launched another thread: "Can room acoustics amplify the sound from speakers?" I did so because of a phememnon I discovered last week. The responses have been interesting to say the least.
Kevinzoe, I did use some of step #1 and #2 by closing the slat blinds behind the speakers in the relocated long axis position. That, in combination with the one large bookcase have eliminated or lessened the slap echo, at least in the section of the room----there is more clarity at higher volume. The RPG diffusers have not been investigated because I am sorting out other other recommedations. I did make one change. On Thursaday, I got an earful of two CD's with the old speaker wire. On Friday, I was able to install the AZ Hologram II speaker cable which made a moderate to big difference---sound is warmer with a little less bite in the highs, bass sounds a tad slower. I could say more, but must run. If you have the time, check out Misc. formum. I launched another thread: "Can room acoustics amplify the sound from speakers?" I did so because of a phememnon I discovered last week. The responses have been interesting to say the least.