Choppy Bass

[eyekyu]

I wanted to venture out of the AA sub thread...

my bass is choppy in low frequency's
its real annoying, i have no idea if this is normal... i doubt

anyways... Ive put the sub through Audyssey, stuffed it with poly fill, & tried different location in my room.

on the sub, my crossover is at max which is 130hz & 50% gain
on the receiver, LFE is at 90hz and -12db

any help
thanks