127 db? That has to be completely awesome in a room! How low does it reach? Are you able to give us an idea of the frequency response? I'm wondering partially because that box seems small for 2 sealed and the sealed doesn't extend as far down as an ideal ported. However, the responsiveness (transients) of the sub should be insane even with a small sealed (I think at least) box. Push/push, so both going out at the same time? Side-firing or front-rear?

Sorry if this invades the nondisclosure agreement. I understand perfectly if you can't answer a particular question.