I'm seriously considering building a 215, and in doing some "research e-shopping", I ran across some Soundtech crossovers on Parts Express that seemed ok for what I want, but I wanted to know if anyone had any opinions on them. http://www.partsexpress.com/pe/showdetl.cfm?&Partnumber=269-824 I've drawn up plans (even though maybe I am the only one who can make sense out of them), and I drew them around what I think I understand confused about the KappaLite 3015LF. Anyway, for the time being, I'll probably just run it with the 15's and no crossover or mid-driver. I'm sure that I'll need to add it, but I figured I could do that after a few weeks to make sure I like the way the cab sounded. Basically, the cab would wind up with about 11.235 cu.ft of internal volume after deducting the bracing (will be horrible overkill, but it will be stiff) and displacement of the speakers, and for what will be the seperate wooden compartment for the mid. I think I am aiming for a 43hz tuning (two 6" diameter x 2.93" ports at the bottom of the baffle). Anyway, back to the questions.... like I said, does anyone have any opinions on the Soundtech crossovers? My band has two older Sountech cabs that we've had great luck with. But I have no idea if it is just luck, or if they actually make decent stuff. And second, am I going wrong with the 3015LF? Is there another driver I should look into?