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tom collins
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new floor going into listening room - question

gurus:

i live in a strange house where part of it is 180 years old and part is from 1970. my listening room is in the old part. the room is 18x19 with 10 foot ceiling, plaster walls. the original floor joists are actual logs, but over the years, there has been termite damage and general sagging. so, this week, the floor is being demolished and new joists, subfloor and floor installed. the old floor was not level and there were soft spots (hard to get the speakers spiked down well). when the room is in use, there are quilts on the walls furniture, drapes and a couple of homemade bass traps, but it was pretty boomy before.
my new floor will have wall to wall medium density pile carpet.
my question is this: a person whose opinion i trust suggested using a fiber pad, not the typical foam and that it would help tame the bass quite a bit. i wondered if anyone here had heard of/tried this approach and how they felt the response was? i am thinking it will probably be more expensive to do and wanted some feedback, it will be another week at least until i have to order it.
thanks in advance.

tom collins

BillB
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Re: new floor going into listening room - question

Three part answer:
1. I don't know.
2. Seems like the composition of the pad under the carpet wouldn't make any noticeable difference. It's under the carpet, plus either way, it's padding.
3. Refer to #1.

mrlowry
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Re: new floor going into listening room - question

I had one room that had plaster instead of dry wall and it was one of the best rooms I've had a system in to date. All of the drywall in the room resonates at exactly the same frequency, adding a noticeable room bump. There is a good chance that most of your bass problems were due to the floor so you might have to re-tune the room after the new floor is in. The carpet pad wouldn't significantly impact the bass, the frequencies you are dealing with don't even "see" the pad. Anything that will make the floor more rigid will make the bass deeper and more articulate. I've known people that have used floor jacks, with great results. You should read "How to Get the Best Sound from Your Room", a chapter of Robert Harley's book "The Complete Guide to High-End Audio."

If your are really ambitious you could read "The Master Handbook of Acoustics" by F. Alton Everest. It's not that expensive but it is a very very tough read. Very dry and academic, but very rewarding.

ethanwiner
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Re: new floor going into listening room - question


Quote:
a person whose opinion i trust suggested using a fiber pad, not the typical foam and that it would help tame the bass quite a bit.


No carpet pad is anywhere near thick enough to have any noticeable affect at bass frequencies.

--Ethan

tom collins
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Joined: Apr 3 2007 - 11:54am
Re: new floor going into listening room - question

thanks guys. any other thoughts welcomed. i already know i need some of your traps ethan, but can only afford so much at once.

tom

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