Someone has already done a great job for you, if you're interested. Coincident Loudspeaker Technology in Canada. Israel Blume is the owner, and is quite responsive. Only problem, they don't make them any more(these shapes are too hard to work with). Look for them used, they'll be cheap. They're much like WATT/Puppies, but high sensitivity/ impedence. They're very easy to drive, and love tubes(or ss). They use a Vifa fabric dome tweeter(he will sell you ScanSpeak Revelators to upgrade, if you want), and an 8" Seas mid-woofer w/phase plug(the Mg/Cu version is found on many $10K+ speakers today). Only 2 crossover components(first order): a large guage coil, and a polypropylene cap. Subwoofers go to 22Hz with 0.5% distortion(claimed, I didn't measure). Sound is wonderful, first class. Powerful, full, and non-fatiguing. They are better than the PSB Stratus Gold-i's I used to sell by a good margin. I even prefer tham to the Wilsons(much better, smoother sound)! If you do build, go first and listen to many speakers. Find out things you like and don't like. That way you can design around your tastes. For example, see what type of tweeter you like: metal, fabric, or inverted dome, etc. If your love for the Wilson is their cool looks, do it with sound YOU like. That way you have the best of all worlds!
