Pan control

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Author Message mike1762 Senior Member Username: mike1762 Post Number: 780 Registered: 1-2008 Posted on Friday, March 11, 2011 - 2:59 pm:    I was working on my basses today (evening-up the output level on all the basses I would ever use live) and I noticed a couple of things: 1) I had to set the trim ALL the way down on my Alembics in order to match my other (also active electronics) basses. 2) I was isolating each PUP and noticed that the bridge PUP on my SC (Signature electronics) was never disengaged (using the trusty "tap on the PUP with a screwdriver" test) even with the Pan 100% toward the neck. The neck PUP did go silent with the Pan 100% toward the bridge. The more I listened to the tonal differences as I pan from the neck to the bridge, I'm thinking that the bride PUP is not being attenuated. Any suggestions on how to verify that observation and how to fix it??? lbpesq Senior Member Username: lbpesq Post Number: 4784 Registered: 7-2004 Posted on Friday, March 11, 2011 - 4:01 pm:    As far as how to test it, you might try holding a vibrating tuning fork over the bridge pickup while rotating the pan control to see if the volume of the tuning fork changes. Bill, tgo mike1762 Senior Member Username: mike1762 Post Number: 782 Registered: 1-2008 Posted on Saturday, March 12, 2011 - 2:45 am:    Thanks Bill... I hadn't thought of that. I'll get a tuning fork while I'm out today, but I'm pretty sure the bridge PUP is staying "full on" regardless of the pan setting. This is the same bass that was having all the "squealing" problems. dfung60 Senior Member Username: dfung60 Post Number: 482 Registered: 5-2002 Posted on Saturday, March 12, 2011 - 3:08 pm:    Another quick test would be to unplug the neck pickup connector (assuming you've got one) and see whether the bridge pickup level changes when you turn the pan. David Fung mike1762 Senior Member Username: mike1762 Post Number: 785 Registered: 1-2008 Posted on Saturday, March 12, 2011 - 4:58 pm:    Well HELL!!! Now it's not doing it!!! dadabass2001 Senior Member Username: dadabass2001 Post Number: 1550 Registered: 6-2002 Posted on Sunday, March 13, 2011 - 7:32 am:    All the expert diagnostic advice scared it into behaving. MIke lbpesq Senior Member Username: lbpesq Post Number: 4787 Registered: 7-2004 Posted on Sunday, March 13, 2011 - 12:12 pm:    Ahh, the threat of a good tuning fork can work wonders! lol (Though I have to admit David's suggestion makes eminent sense - as always). Bill, tgo mike1762 Senior Member Username: mike1762 Post Number: 787 Registered: 1-2008 Posted on Sunday, March 13, 2011 - 5:03 pm:    I'm thinking of sending the guts in for a lube and oil change. I keep having weird, but intermittent, electronic issues with this bass. I LOVE the way it plays, so I've got to get the electronics in order.