Pairing a class D amp with the titanium Focal tweeter that Wilson uses will soon have you selling either the amp or the speakers -- a recipe for nastiness.
What follows is off-topic -- sorry -- but if you like clean highs like that offered by Focal's beryllium tweeter and the knock-the-house down dynamics of Wilsons, perhaps you should consider the Escalante Fremonts -- I have been running a pair for about four months. Escalante is Thierry Budge's company, Thierry being the designer of Wilson's Grand Slamm, the WattPuppy III and the Whamm. They are 93 db. efficient and go loud as hell with a 30 watt amp, and if you've got it, can handle enormous amounts of power without distorting. They are also front ported, which makes them easier to place. Reviewers Greg Weaver and Dave Thomas own them, as does mastering engineer Steve Hoffman.
The look of the speaker requires a personal inspection -- I thought they were horrible / laughable in pictures, but when I saw a pair in Singer's room at CES 2007, I completely changed my take on them. The following picture gives a taste, but they are more impressive in the flesh, as the build quality has to be seen to be understood: http://www.positive-feedback.com/Issue26/escalante_fremont.htm
