Sean Posted April 16, 2008 Share Posted April 16, 2008 (edited) I have just installed a set of DiMarzio P/J pick ups in a Fender Precision and noticed that when both the P and the J volume pot is up full the volume is lower than when the P is full and the J is rolled off to about 3/4. Rolling the J off further turns the volume down as you would expect. Any ideas why this spike on volume occurs at about 3/4 up the J pot? All three pots are 250k, Cap is 0.1 uF. J pup is a stacked humbucker. When the J pup is soloed the pot seems to behave normally. Edited April 16, 2008 by Sean Quote Link to comment Share on other sites More sharing options...
obbm Posted April 16, 2008 Share Posted April 16, 2008 Have you tried swapping the wires over on one of the pick-ups? They may be out-of-phase and partially cancelling each other when both fully up. Quote Link to comment Share on other sites More sharing options...
Sean Posted April 16, 2008 Author Share Posted April 16, 2008 Yes, Dave. I tried that and it was exactly the same. I'm thinking that it might be a defective pot? Also looking inside my DJ I noticed that it has 500k pots whereas the usual for single coils is 250k. I thought that putting 500k pots with s/c pups would make them very toppy and horrible - evidently not, anyone care to enlighten me on this? Thanks Sean Quote Link to comment Share on other sites More sharing options...
Sean Posted April 19, 2008 Author Share Posted April 19, 2008 Pot seems fine - still have a quiet J pup when its pot is up full and used with the P pup pot on full - rolled back to about 3/4 the J gets a lot louder. I can live with it but not knowing why is infuriating. Quote Link to comment Share on other sites More sharing options...
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