Tux, what are the model numbers for those Celestion mids and Eminence woofers? How much do you think this DIY speaker will cost in the overall parts? I need to build some surrounds for sides & rears of my theater, and I can't decide between the Karma-8's, the Karma-10's or the Fusion-8's. or I might hold out until the Seos-10 arrives and build some of these speakers that you are designing. I would really like to wait until the Seos-15 comes out, and do a build that I can try as a LCR in my theater to compare against my current LCR's, then move the ones that I like the least to surround duty, only problem is that I am kind of getting low on funds, and there are no existing Seos-15 designs with cheaper woofers.