I use bandpass subs with a 100 Hz ACOUSTIC low pass in addition to the electrical LP that is in the amps. There is NOTHING of significance above about 100 Hz. Quit trying to top me on everything I say - I think that I know what I'm doing. If you don't agree with what I'm doing thats fine, but don't agree to what I actually say and what I am actually doing, not something stupid that you seem to imagine me doing.

And my room is very well damped at these frequencies to boot. There are no distinctly measureable modes.

You talk to me like I'm an amatuer who's guessing at what might sound good - and your going to set me straight. I've studied this problem in intensive detail for about 30 years - I hope that I've learned something along the way.