Density of Fiberglass

[JuliánFernández]

I understand that, Bryan, thanks for the tips...
I like the idea of mixing fluffy and rigid stuff... That way i can use the spear wool i already have, and later buy some rigid fiberglass to improve my bass
traps!

Thanks everyone for turning this into a great thread!

 

[knightfly]

Sounds like a good plan to me too; that would put the heavier stuff away from the wall where it'd do the most good, and it wouldn't require you to tear anything out if the fluffy stuff doesn't quite finish the job at the very low end... Steve