I have a set of his Microcoils in a Tele I built. They are terrific pickups, especially for $95/set. Haven't tried the Q-filter, but it looks interesting. Have you tried the L500's?
No, I haven’t tried the L500 though I am considering buying one for the LP Jr. style build I’m finishing up. I have another Q-filter in my parts drawer that I’d like to use on the Junior but would need an L-90 or L500 to pair with it.
My Mustang has a vintage 1970’s L-90 in the bridge and Bill’s daughter Shannon wound a L-298 Strat neck pickup to pair with it. I bought a pair of Wilde L-90’s for an old late 70’s Ibanez Studio I had a few years ago but sold that guitar. Those pickups as a pair with the Q-filter sounded incredible.
So far in my tinkering, the Q-filter works better with his Humbuckers, at least for me. Wired to the tone pot with both a resistor and capacitor the “Q-Tone” reduces the inductance of the pickup, going from full humbucker to a scooped mids, quacky Strat tone. It is really cool and makes the tone control actually useful.
How many times have you played a humbucker equipped guitar and just left the tone pot on 10 because it is mud if turned down even the slightest? Bill’s designs are useful the entire range.
As for his Microcoils, I’d love to try them. If I put together another single coil guitar those are the pickups I am going with.
Did you buy your Microcoils new from Wilde/Lawrence or used? The hardest part of buying from them is the wait times. My L-298 took 4 weeks to get to me. They build everything to order so patience is a must. The pickups are worth the wait though.