Re: P90s for Les Paul
one note about the phat cats... they come stock with dual a2 magnets, and the bridge isn't calibrated quite that well for the neck pickup(output is a bit mismatched). blueman should be here soon to spread his mag-swap gospel
It's like you guys put on the Bat signal. This (below) applies to P-90's, PC's, P-94's, etc; everything with twin bar magnets.
I have more Phat Cats than just about anybody on this forum, but I'll tell you, the stock A2's don't work for me. I've pulled all of them out. I started experimenting with the neck PC first, and used HB's in the bridge, which BTW is a
very good combination. You get the warmth & power of a bridge HB where you need it, and the treble & clarity of a single coil to prevent a muddy neck. Why isn't this a common set-up on factory guitars?
Twin A2's make a PCN very dark, which other players here have commented on. I replaced one with an A5, and that was a big improvement: more treble & definition. Then I wanted to add more treble, to see if I could get it sounding like a bridge PU, but with more mids & lows. I found the A5/A3 and A5/A4 pair to be ideal. The A5/A3 is the brighter of the two, very open & clear, and single coil sounding. The A5/A4 pair is gutsier, with more mid-range punch, and some crunch to it.
I have an Epi LP Std that I recently put a pair of Phat Cats in, wanting to make a bridge PC work (I didn't want to drill holes for P-90s). Stock bridge PC's are kind of thin & weak to me. Since an LP is a warm body, I went with an A5/A3 in the neck for clarity. I wanted a warm & muscular bridge, so I used an A8/A4, mixing the warmth & output of the A8, with a dash of treble from the A4 for bite. Turned out to be very good combinations for both. I also put in a push-pull, so I can link the PU's in parallel & series, making them a virtual humbucker. This also works well. I've got 4 good tones to work with.
You can do all of this with P-90's, and you may find that you like a different magnet set better. The beauty of it is the twin magnets, with give you finer increments in adjusting your tone, by blending magnet characteristics.