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I need a 50" X 32" piece of acoustical panel (Owens Corning 703 equivalent)? It seems that all of the sheets are sized at 24" X 48".
I mounted a 50" plasma TV on the wall behind my speakers and I am told that this is bad for soundstaging. I thought of making an acoustical panel the size of the screen (49" X 32") and mounted hangers on the back so that I could hang it in front of the TV when doing serious listening.
Is this a good idea or no?
Follow Ups:
Thanks to RickeyM, David Aiken (once again!), and Dynaudio Rules. My thought was to use a lightweight (~10lbs) absorption panel with hooks to hang it over the TV when listening and then remove it when using the HT. Now, thanks to RickeyM, I know that I need to determine whether to use absorption or diffusion. Hopefully, I will get to do his suggested testing this weekend.
I did find a good source for acoustical panels (see attached link). They have good pricing and offer custom sizes. Also, they offer mineral wool (safer?) in addition to fiberglass.
I will let you know what I decide.
Thanks again.
Dave
I suggest you make a frame and fill it with 2'x4' sections of OC703. It might be difficult to handle and hang so you might as well just make several panels and hang them side by side.
Karma Means Never Having To Say You're Sorry 音楽は天国と地球のかけ橋
Rickey's suggestion of the blanket is a good starting point.
Direct reflections—reflections which reach you after reflecting off only one surface—are more problematic than later reflections which have to reflect off 2 or more surfaces before reaching you and which are much lower in level as a result of losses at each reflection point and the decay in level that comes with increasing travel time and distance. If the speakers are close to the screen and not too far in front of it, you won't get a direct reflection from the screen.
If you do have problems, then they're going to be affecting sound when you're using the screen as well as when you're listening to music. In that case you may wish to consider using something like a standard 4' x 2' panel on each side of the screen between the screen and speaker. The panels would be close to parallel to the side walls so they don't obscure the screen from your listening/viewing position but do prevent direct sound from the speaker reaching the screen.
David Aiken
What speakers are you using? If they're bi- or di-polars, treating this area will be more important than if your speakers are the more conventional type.
As an easy test, you can try hanging a blanket over the TV screen to see if there is an audible effect. Some times diffusion in this area is best. Got any bubble wrap? Cover the TV with that and if it sounds better than the blanket, diffusion there is what you need.
As far as an acoustic panel, you could always split the space in half. Say, two panels 50"x16" or 25"x32" each.
Thanks RickeyM. I am using Thiel CS5i's for the fronts (direct radiating). You have a good idea about trying a blanket and the bubble wrap to see which one works best. I will try that.
Thanks again.
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