On 12/3/2005 12:00 PM, BD said:
If you don't mind hacking the chrome humbucker ring up, try cutting a radial slit in the ring, breaking the ring into a letter C with the tips almost touching. An Xacto razor saw would work to cut the slit. A hacksaw with 32 teeth per inch can work, but the teeth may tend to catch on the sheet metal of the ring, forcing one to saw at a very slight angle, almost parallel to the sheet. Anyway, a slit will interrupt the eddy currents in the HB ring, and should restore the sound, if currents in the ring are in fact the cause.
"I just took off the metal humbucker rings on my parts telecaster. I had wood ones I got from someone on ebay and they sound great but I had to epoxy them, they break too easy. I also ended up having to dip them in tung oil to harden them. So I figured let me use thes unbreakable chrome rings, they look cool. WOW...did I lose sound, or what. Not only tone but output and highend too. Just a big tonesuck. These pups had covers, they are custom wound P-90 hum mounts. I don't have the same problem with open humbuckers in my gotoh tele bridges. I guess there is a lot of factors involved. "
Grounding has no effect on eddy currents. The reason to ground things is to reduce electrostatic and conducted hum and noise induced by the musician's body and hand.
"I read if the metal is not grounded it will cause all kinds of problems but the rings were [grounded], I checked with my VOM. I don't mean a little loss, I mean a "LOT". Maybe they work better with an open humbucker and act a little like a cover. "
Lots of pickguards have a piece of aluminium foil glued to the back, to act as an electrostatic shield. Not that the foil usually extends to surround the pickups. If it did, the slit trick would be in order.
"I guess a whole pickguard is just too much metal."