Thanks for the quick reply... I was just wondering how much room I would have to experiment. Of the 3 or 4 midrange drivers I am considering, one makes me a bit nervous as to how well it will manage anything under 300 Hz, and that is the B&G Neo 10. I know that you cross them lower than that in one of your designs, but you are using four of them as well, where I will use just one or maybe two. I suppose I could crank the Hypex crossover up to 200 Hz and select 12 db/octave slope, which I think would place the actual crossover point at 300 Hz ??? and then slowly back it down while also lowering the settings on the Neo10 and see how it goes. I will be using MiniDSP which I know you are not a fan of, but it will allow me to get started easily and then in a year or two I can upgrade to something better. I really like your servo 8 option because it seems to be a nice option to cover both woofer and subwoofer duties for some of us who don't need reference and above home theatre SPLs down to 15 Hz. I really just want to get down to the mid to upper 20's and only for music listening purposes in a small/medium room (14 x 22) in my basement.