panels behind screen ?

[just-some-guy]

i have about 12" behind my screen. bare wall. would it be a good idea to put some panels back there ? my 2 subs are on that wall.

 

[jostenmeat]

i have about 12" behind my screen. bare wall. would it be a good idea to put some panels back there ? my 2 subs are on that wall.

Very likely.

In the typical room, the front corners are often said to be THE bang for buck spots to trap bass. You can also treat the areas directly behind the speakers to reduce SBIR. Or you can go nuts and deaden the whole wall. Just make sure the panels are thick enough to absorb low enough for subs.

 

[nibhaz]

I specifically asked bpape's opinion on this matter concerning the gap behind my plasma, and he said it definitely wouldn't hurt and would probably help with SBIR since its between the mains.

 

[just-some-guy]

thanx guys.

i have corner traps. i am going to add more to them. they are directly behind the mains. and i have extra stuff to make panels. so i will.

 

[just-some-guy]

Sbir ??? ...............

 

[jostenmeat]

Sbir ??? ...............

by b pape:

http://www.hometheatershack.com/forums/home-audio-acoustics/1818-general-acoustic-terms-sbir.html

 

[just-some-guy]

i made 2 large'ish 4" panels today. they are just above the subs. and i am going to made 2 others when i get some more 1x4's, to fill the gap in the middle.

 

[Techlord]

i made 2 large'ish 4" panels today. they are just above the subs. and i am going to made 2 others when i get some more 1x4's, to fill the gap in the middle.

What is the most popular broadband acoustic material of choice? I have some wooden frames already made (2' ft. x 4' ft.) and will finish with white ivory burlap fabric, I'm guessing whatever material is most popular I need at least 4" inches thick.

Regards,
Techlord.

 

[just-some-guy]

http://images.google.com/images?hl=en&source=hp&q=owens+corning+703&gbv=2&aq=f&aqi=&aql=&oq=&gs_rf

i can't find it by me. so i use mineral wool. it is pretty dense, and menards has it.

 

[mperfct]

I put up 8# 2" mineral wool over my entire front wall, and put 4" "bass" stuff in all the corners of the front wall and in the false soffits as well. I'd say my sound is pretty good, and I'm pleased with it so far.

 

[Techlord]

http://images.google.com/images?hl=en&source=hp&q=owens+corning+703&gbv=2&aq=f&aqi=&aql=&oq=&gs_rf

i can't find it by me. so i use mineral wool. it is pretty dense, and menards has it.

Thanks for the link, there's a motherload of information.

Regards,
Techlord.

 

[manlystanley]

I have a bass standing wave issue in my room. I believe that standing waves are the culprit. So, in reading the following referenced link:

http://images.google.com/imgres?imgurl=http://remixmag.com/mag/2a-DIY1105.gif&imgrefurl=http://emusician.com/remixmag/how_to/technology/remix_diy_acoustics/&usg=__vn0xzBLQd7I9o9-pBQ1IDOfywQM=&h=263&w=350&sz=45&hl=en&start=11&itbs=1&tbnid=Y9_d4wsEVnviQM:&tbnh=90&tbnw=120&prev=/images?q=owens+corning+703&hl=en&gbv=2&tbs=isch:1

All that I need is a trash can fully of insulation and not fancy acoustic paneling??


Thanks,
Stan

 

[westcott]

Sounds like you are really trying hard to improve the sound in your room.

That is a good thing.

My recommendation would be to do some more testing with a different subwoofer placement. This will make the most dramatic difference in sound quality in your room.

I would suggest trying to place your subwoofers opposing one another. One in front, one in back or one on each side of the room.

Placing a sub in a corner may generate a few more dB but it may be at the expense of good frequency response in the seating area. Opposing subs should provide more even coverage for everyone in the room.

Only some extensive testing with an SPL meter will determine the best placement.

Once this is done, then worry about bass trap placement and quantity.