Tuesday, 09 April 2013
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Hi Sheldon, Another question for you regarding my prefire Voodoo Prima that I believe is still original with Barts and Bart preamp. I am going to replace its input jack this weekend (the current one no longer locks the input from a cord in place) but I may need to replace the stacked treble/bass pot as well. I noticed that often when I adjust treble or bass, or even lightly tap the end of the knob, it sounds like when you tap a microphone, yielding a rather loud boomy sound. It's really not a scratchy sound, but more of a pop. Could this be related to the input jack, or does this sound like a bad pot? I checked the connections and they seem sound. If it's the pot, what pot should I replace it with? The number on the outside does not produce an Internet search result. Also, please bear in mind I LOVE the way this bass sounds, so I would prefer not to alter the tone if at all possible. Thanks again!
9 years ago
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#25874
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Hi Bob, That's a new one. I've never heard of a pot doing that but it's a mechanical component so could be wearing out. Diagnosing things like this require pushing and pulling on components, tapping everything in sight to see if it's a simpathetic vibration. If you do trace it down to the pot, you'll need to contact Bartolini or bestbassgear.com for replacement. It would be a custom Bartolini pot.
9 years ago
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#25878
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[quote="Sheldon Dingwall":13lg6852]Hi Bob, That's a new one. I've never heard of a pot doing that but it's a mechanical component so could be wearing out. Diagnosing things like this require pushing and pulling on components, tapping everything in sight to see if it's a simpathetic vibration. If you do trace it down to the pot, you'll need to contact Bartolini or bestbassgear.com for replacement. It would be a custom Bartolini pot.[/quote:13lg6852] Hi Sheldon, Thank you for your response. I know, this is wierd. When I tug and pull on that pot it makes this rather harsh and loud noise, like when a connection is being made and broken. Sometimes the sound will occur without touching anything though. I will replace the jack first and go from there. If the noise continues, I'll contact Bartolini and see if they have any idea what they did for that pot 20 years ago! LoL! This is what I get for buying vintage! :lol: BUT, as I said, I really love this bass! So NBD!
9 years ago
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#25890
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Hey Sheldon, I replaced the jack, but the problem with the stacked Treb/bass pot persists. And it seems to be isolated to that one pot. I get no rude noises from twisting/tugging the volume or blend pots. Just out of curiosity, if I were to decide to upgrade the electronics rather than chase Bartolini for an old custom pot design, what would you recommend for a vintage Voodoo Prima? Will FD3-4L's fit? Super Fatty's? Which pre-amp that you currently use is best with the Vol/Blend/Stacked EQ? Or should I make it vol/PU select/Stacked Eq? I like a darker growly low-end with a bit subdued highs, which is why I like the Bartolini set-up> Thanks for your time in advance! Rob
9 years ago
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#25895
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Hi Rob, check this page out http://www.bestbassgear.com/pots.htm I believe what you're looking for is the Noble Stacked EQ Pot- $18. Might as well buy two at that price. The Bartolini pre-amp is a nice, smooth sounding pre. The Gain adjust is a nice feature that other pre-amps don't have. Swapping out pre-amps adds all kinds of fit issues that need to be considered. I'd recommend using the Bart until it dies. If your bass has angled pickups, you should be able to install FD3 pickups in rectangle shells. I'm not sure how much stock is left of those shells so supply may be limited. It's a nice upgrade but will require drilling and installing inserts in the body.
9 years ago
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#25903
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Thanks again Sheldon. I appreciate the link. I do like the Bartolini preamp and PUPS. I would like to keep this bass original if possible. It has a great tone as is!! I am going to try one more thing first. I got some contact cleaner from radio shack, so I am going to try that and see if that will eliminate the problem. If that doesn't work, I'll pick up a few of those pots and try replacing it. I'll let you know how things go. BTW, here is a pic of my bass. It does have angled pups! [attachment=0:18r84qiw]$T2eC16RHJHwE9n8ihpYCBQVmO5VtnQ~~60_57.jpg[/attachment:18r84qiw]
9 years ago
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#25915
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:oops: Well, talk about much ado about nothing! I sprayed some contact cleaner in the pot, NO MORE NOISE! Don't I feel like an idiot!
9 years ago
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#25916
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[quote="BuffaloBob":l8sfk9dc]:oops: Well, talk about much ado about nothing! I sprayed some contact cleaner in the pot, NO MORE NOISE! Don't I feel like an idiot![/quote:l8sfk9dc] Don't feel bad, I posted this a few years ago, I promise I felt like worse than you did on an almost new bass! viewtopic.php?f=5&t=1579
9 years ago
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#25918
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[quote="rollerberg2000":3gkf8pt7][quote="BuffaloBob":3gkf8pt7]:oops: Well, talk about much ado about nothing! I sprayed some contact cleaner in the pot, NO MORE NOISE! Don't I feel like an idiot![/quote:3gkf8pt7] Don't feel bad, I posted this a few years ago, I promise I felt like worse than you did on an almost new bass! viewtopic.php?f=5&t=1579[/quote:3gkf8pt7] Thanks brother! I feel a little better. BTW, found no bits of English muffin! :lol:
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