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50K Bass & Treble Pots

Discussion in 'Pickups & Electronics [BG]' started by billhilly66, Apr 5, 2014.


  1. billhilly66

    billhilly66

    Aug 25, 2007
    Plano, TX
    I'm putting a Bartolini NTBTG/918 preamp in a J-Bass I'm building and need solid shaft pots so as to avoid the dreaded knob wobble with J-bass knobs. It looks like Bourns makes solid shaft pots for the 25k volume and 250k blend but I can't seem to find 50k, center detent pots for the bass and treble pots. Where can I get these???

    Also, What's up with the trim pot? Is that optional and if so, should I wire one up? Here's the schematic:

    http://www.bartolini.net/wp-content/uploads/2013/12/NTBT-918.pdf

    Thanks
     
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  3. mmbongo

    mmbongo Chicken Pot Pie. My three favorite things!! Supporting Member

  4. billhilly66

    billhilly66

    Aug 25, 2007
    Plano, TX
    So those sleeves work pretty good? That would save me a lot of hassle if I could slip em on and get rid of the knob wobble.
     
  5. If you insist on using solid shaft pots, why not convert split shafts to solid with brass sleeves?
     
  6. billhilly66

    billhilly66

    Aug 25, 2007
    Plano, TX
    Looks like I'll have to. Would putting a shim in the split help keep them straight?
     
  7. mmbongo

    mmbongo Chicken Pot Pie. My three favorite things!! Supporting Member

    They do work great, you can shim the split if you want to. Wouldn't hurt!
     
  8. billhilly66

    billhilly66

    Aug 25, 2007
    Plano, TX
    So if I put a sleeve on and put my shim real tight in the split, my knob will be straight? Cool.
     
  9. thebrian

    thebrian here comes the boom Gold Supporting Member

    Nov 17, 2010
    Socal
    That's what she said!
     



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