Concrete or Wood floor in listening room?


I'm thinking about building a listening room. It will be a concrete slab. I'll be using carpeting in the room. Should I put plywood down on the concrete first or just carpet over the concrete?

Thanks,
Mike
mjglo
Horns huh, have you talked to Jim Smith of Avantgarde? He will strongly beg that you put wood over the concrete. I talked to him in mid construction of my room and he talked me into the same basic construction as Dave described. I can't say if it's better since it's a tough one to A/B, but my horns sound pretty darn good in there. Call Jim, he's really helpful and would be able to really describe why it is so important.
Ejlif,
Yes horns, Duo's. I Have not talked to Jim about this, thought I'd talk to the (other) experts first.

Thanks,
Mike
Mike

Think of your floor as another wall. Concrete walls absorb nothing. A well constructed sub-floor will be just as good as cement in isolation from vibration.

Q_man

While I don't agree with your choice of sound room construction...ie> all block room, sounds interesting with horns in a " you are there..LIVE sort of way.

Dave
Dave,
You lost me with your statement "A well constructed sub-floor will be just as good as cement in isolation from vibration."
The floor I am planning will be cement, if it is just as good as a well constructed sub-floor why add wood over cement???

Mike
I would assume that wood over concrete wouldn't change all that much as opposed to carpeting that would absorb more of the sound. I just finished installing my own bamboo floors throughout my house and although I was working over a wood subfloor, in my search for flooring I saw that there were options for "glue down" wood floors. These are all the engineered type wood floors and actually go down quite easily. Dave is right regarding it being a bit like a puzzle installing it, but I found that it certainly wasn't rocket science and the only tools I needed were a tape measure, a $50 jigsaw, a rented pneumatic floor nailer, and a hammer and nails for the last boards that had to be "face nailed" I was able to lay about 250 sf a day including cuts for floor vents etc. Since you are going over concrete and would be gluing it down I think it would be even easier and faster for you.

Check out Ifloors.com very reasonably priced (I took a break from audiogon to research floors for a month or so with the same obsessiveness that we all do with our audio gear) They have a wealth of info on the site.

Personally...I like the look of wood floors with throw rugs...after pulling up my old carpeting, I have to say that it was so gross underneath that I will NEVER have wall to wall carpeting in any house I own.

I think I probably rambled on more than answering your question...sorry about that.

Merry Xmas