Originally Posted by Slinger12
Hello. I am building a Home Theatre in the basement with a concrete floor. Will the bass sound and feel OK? Any alternatives?
To get back to your original question:
Basement slabs will reflect sound, and carry (transmit) very low low frequency sound. The latter (Transmission) isn't really an issue as so much the former (reflections)
A number of people here suggested just slapping down carpet. A few recommended a type of subfloor/false floor.
My main concern with just slapping down carpet is humidity. Carpet backings act a like a sponge when it comes to moisture. Most people don't realize that basements can reach 70% relative humidity or more during the SUMMER months. Mine reached 80% one summer day.
These kinds of levels lead to rust and mold. It will absorb into wood work and may affect your speakers. A lot of moisture forms on walls and slabs where the moist air hits it. (Slabs more than 40" underground are typically 55F->60F.) And carpet on slabs will wick that up. (Dehumidifier or not)
humidity level is about 40->50%. Anything over 50% encourages mold growth.
So before you make any decisions about sticking your equipment in the basement and throwing down a carpet, get a humidistat ($5 at walmart) and measure the humidity levels in your basement during the summer months. You may be surprised.