BTW, here's an attempt to fix my 23Hz problem by boosting the response at 20 and 23Hz by 15db (i.e. 2 15db boosts) + a few misc filters to fix some peeks:
boosting 20hz.jpg
My intuition is that applying this much gain with the FBQ2496 is a bad idea since it will introduce a lot of noise, but maybe my original trick of doing the 33db gain with my prepro and tilting the entire response curve to give a similar looking graph is an equally bad idea?
I know you guys are saying "why not just stick with the manufacturer's xover?", but honestly, tuning this system is a massive multi-variable equation, considering the gain and phase adjustments of the active xover, the fact that I have 2 subs, the room response in general, the Onkyo output level settings, Audyssey EQ, parametric EQ with the FBQ2496, etc, etc. Throwing something overboard seems pretty attractive right about now.
