Sean,
LOL, but as I was reading that post I was thinking it was you (i didn't look at the header). I've always believed you should set the cross a full octave above the -3dB point of your speakers, to avoid just such a 'hole' in the LF response. Of course, this is still just a crude rule of thumb, and more precise (actual) measurement of the in-room response and tweaking would be better. And also, of course, this esults in the sub operating up in a fairly elevated (and localizable) frequency range. Which makes another argument for mains and sats that can go flat to 40Hz or better (as you've done).
Tim
LOL, but as I was reading that post I was thinking it was you (i didn't look at the header). I've always believed you should set the cross a full octave above the -3dB point of your speakers, to avoid just such a 'hole' in the LF response. Of course, this is still just a crude rule of thumb, and more precise (actual) measurement of the in-room response and tweaking would be better. And also, of course, this esults in the sub operating up in a fairly elevated (and localizable) frequency range. Which makes another argument for mains and sats that can go flat to 40Hz or better (as you've done).
Tim