Low frequencies require the most insulation , Low bass frequencies are
4 ft long+ compared to high frequencies which are under apx 10000 hz
1/2" long , ever wonder why you hear boom boxes Bass, well , long
frequency, and it takes 4x the power to reproduce low frequencies to
be heard. As well as great insulsation for LF so if you have an 8 ft
ceiling hang 4 ft of fiberglass under it , if your a midgit you
will be ok . If not stoop to 4ft. Or Move.