When i was playing with Dirac, i found that i never had a clipped signal when doing the chair measurements unless my sub channel was high. It seems to me that it just cant handle a decent spl substage whatsoever.

Im interested in this flat Freq response your talking about. Do you mean eq to a flat response(even 9-12db+ substage?) and then let Dirac do its work?

Whenever you guys figure this out. Id love if someone through together a Hanatsu style tutorial. Reading through this and APL threads get extremely overwhelming.