[lardawge]

So I have recently purchased a new sub and FBQ. After reading through numerous days of reading and pouring over documentation I feel that I have done everything I can with REW and the FBQ. I Still find a very annoying loud vibrating resonance when music gets down in the lower frequencies (my guess is 30hz and lower). It sounds as if it has jumped in volume 10dB+. I can visually see it in the waterfall as well.

My question is, What can be done to tame this beast?

Room 10x12 square
SVS PB10-NSD

I would be happy to post graphs if it would help...

Thanks,
Larry