December 16th, 2005, 11:35 AM
I decided to make this a seperate post because well ... my guitar still is not working.
I recently rewired my guitar so each pickup has it's own seperate volume. The problem is now when I push either of the knobs to zero the whole signal is grounded??? It's wired so the pickups go through their respective volumes and then enter the switch and leave to the jack. The switch seems to work fine and still goes neck-both-bridge, each working fine except when they-re both selected (when neck is just selected and bridge vol. is zero it still works fine).
I just don't see what could be the problem could be, but maybe I've overlooked something. Any ideas?
December 16th, 2005, 12:03 PM
That is correct. Even on Gibson guitars, it works this way. The low point of each volume is connected to ground. When either of the volumes is set to zero, all signal is grounded.
There is another way of wiring a two-volume setup so that this does not happen, but I wouldn't recommend it. Essentially, it involves switching the input and output leads on each volume pot. The one drawback to this particular arrangement is a rather significant one. When you back off on the volume, even a little bit, a great deal of your highs disappear. I experimented with this wiring, on a two pickup guitar (PRS Singlecut, very similar to a Les Paul). The volume controls behaved independently, but the loss of treble (in this case, I'd call it the loss of tone) was bad enough to cause me to revert back to stock wiring.
December 16th, 2005, 12:04 PM
Sounds like the scenario which is common and in fact how some guitars with two volumes come wired. Try the schematic here (http://www.guitarnuts.com/wiring/stockgibson.php). It has notes to explain this and purports to be a wiring scheme that avoids the scenarios you now have. I haven't tried this myself, my stock ES-335 has always had this issue but I haven't found the need to change it. I use my selector switch when I want just one pickup, and I don't play the gibby that much nowadays anyway.
If that particular wiring schematic doesn't fit your layout exactly, maybe another one there will.
Maybe the same scenario and solution as described in SD's Q&A #112 (http://www.seymourduncan.com/support/seymours_q_and_a_2.shtml#112)?
December 16th, 2005, 01:40 PM
O.K. up and working, thanks Jim and Yeggy.
When you back off on the volume, even a little bit, a great deal of your highs disappear
This won't be a problem because I no longer have a tone control.
Pretty cool mod. A little bit more subtle than I thought it'd be. Nice for rhythm to lead switching though.