Originally Posted by dragonleepenn
Check this thread, all about a Japan home theater bunker style . It' a Denise Erskine design, see how they deal with a all concrete bunker room. Many pictures and info worth the look.
Nice, I am going to read through it.
Originally Posted by beastaudio
2 inch by 4 inch pieces of wood that people build walls for homes out of, they usually go from floor to ceiling, are spaced 16 inches apart, and have insulation in between each section. Sheetrock on either side. Now you know how walls are constructed.
Green glue is to absorb sound, so as to not pass it through to the next room. In your case with concrete, it isn't going to pass through anyways, so I don't see a huge benefit in doing what you propose. Having concrete is a good thing to keeping sound in, it just unfortunately makes that sound you are keeping in sound terrible. The walls need to be heavily treated one way or another. Fabric as Mike suggested works, even the super thick draping curtains like you see in theaters would work, and then behind it you could place acoustic panels in the areas that are more critical.
Think about how the sound waves react to the concrete wall this way: You are bouncing a basketball on a sidewalk as you walk along. The amount of force it takes to get it to bounce back up to your hand is constant and pretty easily accomplished. All of a sudden you miss-bounce the ball in a big pile of leaves off to the side, and the ball no longer returns to your hand as the force was absorbed by the leaf pile. The same concept happens with sound waves where if they hit the concrete uninhibited, it is WAY too easy for the waves to bounce off and they do so with a lot of force(no attenuation of any sort). If you treat the wall with acoustic panels/plywood/sheetrock/SOMETHING, it will help absorb some or even all of that sound wave, and make your room not echo.
Excellent explanation. Even I can understand this. I'll try with some plywood, glued to the wall, and some curtains first. Not sure if we can get sheetrock here in my country because homes are built using bricks/concrete.... (not sure if the partitians in office buildings are considered sheetrock)
Originally Posted by AV Science Sales 5
Not good. You will need room treatments.
Rather than drywall, I would cover the walls with cloth over absorption. Add diffusion where recommended.
You mean curtains? Or, glue some cloth to the walls?
Originally Posted by countryWV
I have a similar room. Solid cement block and concrete. Only opening is a 3' x 6'6" door opening and a small fireplace that used to house a Buck stove but it Damn near melted my equipment so it now is covered with 244 panels. One wall is solid brick, one is solid drywall, & the front and back are oak panels. The concrete floor has to be covered wall to wall with carpet and sound rated pad ( I take that rating as BS but its better than not sound rated). A mixture of 244, monster bass traps and tri traps in the corners is all that's needed to tame it effectively. This option is a lot cheaper than GreenGlue and sound proof drywall. I don't even have acoustical treatments on the ceiling and my room is silent. I do not have a solution for bass heavy music & movies shaking the actual concrete floor but I like that anyway. Oh Yeah the room is 20'w x 24'L x 7'6"H.
When you are finished it will be easy to get rid of the reflections and echos.
On a side note I took My T12s and both SubM HPs outside by the pool this weekend. It is like letting a caged tiger loose to roam free. If anyone gets a chance to take JTR equipment outside it is an experience that is worth the hassle. My neighborhood is full of Rednecks and Hillbillies like myself so they have the required Live and Let Live attitude as long as the beer is free.
It was disappointing taking them back inside.
Will prob get some rubber pads for the floor for sure before laying down the carpets.
Malaysia. I am not very handy and don't quite understand a lot of the construction talk. Sorry. Also, in my country, homes aren't built with 2x4's wood... they are usually bricks (labor is cheap and thus, brick laying is the norm).