Quote:
Originally Posted by Nosound  rock wool is limp and seems not to be as dense as 703 |
Scott already gave you the right answer. Yes, rock wool is floppy, and it can sag and get lumpy over time. But it works and it's cheap!
> According to one suppler that sells rook wool states that rock wool is only good for 100Hz and above is this true? <
Answer 1: No, it's not true. The real issue is most that labs don't measure absorption below 100 Hz, so official data is not available. This does not mean an absorber suddenly stops working abruptly at 100 Hz! It just means that no official data is available.
Answer 2: I don't know why so many people think they're qualified to comment on acoustics and absorbing materials. These days everyone's a damn expert.
--Ethan