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Originally Posted by cletus Mineral wool or "rock wool" is definitely cheaper and has a an 8 pound psi density. |
Rockwool can be obtained in various densities, depending on the manufacturer. Thermafiber (which I have used ) can be had in 3 and 4 lb densities
Heres a llink to plans and pics of my room, with before and after frequency graphs:
http://www.johnlsayers.com/phpBB2/viewtopic.php?t=5895
It also has pictures of the superchunks i made with rockwool