Concrete or Wood floor in listening room?

I took 2x4's and laid them on their sides, this will raise the floor 1.5 inches above the concrete (glue and nail them down). Then I put 1.5 inch thick foam panels between those for insulation. After that I laid down .75 inch tung and groove flooring on top of that..very solid floor that has the feel of no floor at all on top of the concrete (in other words, no give regardless of how hard someone might jump).

Thick carpet tops it off. Don't try to lay the tung and groove with out someone that knows how it needs to go down...it's like a giant puzzle and the last piece of the puzzle fits very tight.

Dave

You'll feel more bass with a suspended floor above the concrete. Depending on the size of the room, and the speakers used, you could be fine either way.

Mike, I've seen concrete work but I would float a floor if I had the chance. 2X6 or 2X8 with 12 or 16 inch centers would be great for flooring on a concrete slab. You didn't say what your equipment is so it makes it a little bit harder but I've heard analog gear with friends of mine and you don't want to have a lot of bounce in the floor which is why I would keep the centers closer together.

Where do you live?
Here in Florida the carpet and pad go down right over the concrete slab.