How big were the boxes for the goodmans? I have a pair of electrovoice EV Force 15s that need about 20 cubic feet BR boxes to go down to about 30 HZ, with 100 DB eff. I can;t make them, since my music room would then be jam packed. I was thinking of trying a music subwoofer.

I would also like to say that I have taken Martin's friendly challenge, and am playing with my fullranges (vintage stephens 80FR) and a BSC. Last night I spent a couple hours doing some critical listening. Preliminary qualitative results (complete report to follow later): The speakers do sound better with the BSC, it does flatten the curve and make the recording more bodied. It will probably make blending with a 24db low pass subwoofer easier. I then blended the setup with a supertweeter, crossed a bit low in my opinion (but all the shops were closed and I was stuck with the 2.2 uf caps) and the speakers really sounded a LOT better than I have ever heard them sound.

BUT I can't get out of my head that the BSC is in essence choking (attenuating) my full range's midrange, and
goes against my overall (irrational) philosophy of not letting any electronics in the way of as large a portion of the spectrum as possible. I mean, a 3 way WILL sound better than my full range, and If I played the right games with the full range it WILL perform better.

I have to seriously look deep within myself to see what do I really want from my full ranges: a) the best possible sound, or
b) the best possible sound GIVEN certain constraints (like no electronics in the middle of as large a frequency range as possible).

Since I am a "nut", you can guess which way I am leaning right now!

-akhilesh