need sound proof help

[loudmouth]

I need help with an entertainment room that's next to a bedroom. I'm looking for some inexpensive method of sound proofing the wall and door to the bedroom. I found this on Ebay. Can anyone tell me if this stuff works, works well? Thanks, anthony cambece from Salem Mass,

http://cgi.ebay.com/HOME-SOUNDPROOFI...QQcmdZViewItem

[pandamonk]

As far as I know, that will do NOTHING for sound "proofing". Soundproofing is near impossible. Sound insolation is what you are looking for, and there is no "cheap" way about it. What you need is a mass-air-mass type stricuture, and air-tight seals. The main way is to build a room inside a room. What that stuff deals with is room acoustics which a totally different thing from insolation. It makes the room sound better, but that only absorbs mid/high frequencies, so the room will be dead boomy/bassy. To stop the boominess you will need to build a basstrap, which you will find if you do a quick search. My suggestion is, if all you want is insolation, don't get this stuff. Buy air-tight door seals, something like these for the door(s), and check to see if that's enough. If not you could try buying/building a new heavier, solid, door(with MDF, or something similar), with seals. If that isn't enough then you are going to need to either build a room inside a room, or a second wall where the adjoining wall of the to rooms is, that doesn't touch the existing wall and is sealed with caulk(if the sound comes throught the walls), or making a double door, ie. building a walkway into one of the rooms about a metre and installing a seconds door, all sealed, if it's just coming through the door(s)

[pandamonk]

Ohh and check out/read a lot of the other posts in "Studio Building and Display"

[EDAN]

Pandamonk speaks the truth, well, almost. Typical mattresses WILL help a GREAT DEAL in sound proofing a room. I have three full size and one twin in my drum room and it cuts the noise to the rest of the house a fair amount and outside the house to a great amount. I leave the ceiling alone so I don't lose all the highs and mids. I stuffed the one window with layers of carpet and made a drum riser using pointy steel spike like legs, which helps control the low end. It may not look pretty, but it does the job better than anything other than building a floating room within a room. Then again I've never built a room within a room but nothing else I've tried beats a good old mattress or two, three, four