Why might I have this Capacitor on the volume pot?

Discussion in 'Just Pickups' started by maceo357, Dec 6, 2018.

  1. maceo357

    maceo357 TDPRI Member

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    So I went into the cavity of this PRS to actually install a Kinman treble bleed mod and it already had this capacitor? (B181).
    Is this a treble bleed?
     

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  2. moosie

    moosie Doctor of Teleocity Silver Supporter

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    Yes. Assuming that's a volume pot we're looking at.
     
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  3. maceo357

    maceo357 TDPRI Member

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    It is without a doubt the volume. The other has an orange drop cap.
     
  4. Viejo

    Viejo Tele-Afflicted

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    It is a treble bleed and actually retains more treble as the volume is rolled down than the other types, cap -resistor in parallel and cap-resistor in series
     
    Last edited: Dec 6, 2018
  5. 8barlouie

    8barlouie Friend of Leo's Gold Supporter

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    Yes, if installed correctly, the difference is easily distinguishable. I just put one in my Tele and it’s a game changer. I’m going to get one for all my guitars.
     
  6. beninma

    beninma Friend of Leo's Silver Supporter

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    Yah.. I have that exact same mod (well assuming it's a similar value capacitor) in my Telecaster and I like it 100% better than not having it.

    I already have a knob for removing Treble, no thanks on having the volume do it. I want to be able to roll the volume off and get a cleaner sound without losing the treble.

    None of these mods are perfect in terms of keeping the tone exactly the same as you roll off the volume but all that matters is whether you like it. Without a bleed at all the knob on my guitar rolled off a tremendous amount of the treble. I would say if you rolled the volume off 1/4 it was the equivalent of rolling off the tone at least 1/2 way off.
     
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  7. charlie chitlin

    charlie chitlin Doctor of Teleocity Silver Supporter

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    I found one on a recent acquisition.
    Works great.
     
  8. TRexF16

    TRexF16 Friend of Leo's Vendor Member

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    As others have said, I would have expected this cap to probably keep an even higher amount of treble as the volume is rolled back than a Kinman or Duncan style (which would include a resistor). That begs the question - was there a significant treble loss when trolling the volume back already that led you to consider adding the Kinman treble bleed? And can you read the value on the existing TB cap if you move those wires out of the way?

    Thanks,
    Rex
     
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  9. maceo357

    maceo357 TDPRI Member

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    No there was not enough significant treble loss to justify modification. That being said that for a stock guitar this one sounds amazing. My intent was to put a TB in if there was not one as I use my volume a lot. Once I got the back plate off though and saw that one was already in my decided the guitar did not need it.
    I do intend to replace the tone pot with a no-load.
     
  10. kafka

    kafka Tele-Afflicted

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    There was one from the factory on my Mira. Kept way too much treble, actually, so I ended up clipping it. I was fine without the treble bleed, but I'd use a different circuit if I were to restore it.
     
  11. bigben55

    bigben55 Friend of Leo's

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    I just added that mod to a dual P90 tele and it does help the neck pickup from losing all its highs when I guitar vol down. Honestly I think it also spreads out the sweep of the vol knob some. Feels that way. I bought a commercially made cap and resistor.
     
  12. zombiwoof

    zombiwoof Tele-Afflicted

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    That just means the value of the cap was too high, you could have experimented with lower values till you found one that gave a natural sound as you turn down, instead of just clipping it out.
    Al
     
  13. soulman969

    soulman969 Telefied Ad Free Member

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    [​IMG]
     
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  14. moosie

    moosie Doctor of Teleocity Silver Supporter

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    Keep in mind, folks, even those listed by soulman above have nice names, these values are NOT set in stone. This is not a sling against the poster, just be aware that these are starting points only. It'll differ depending on which pickups you have, volume pot value, and whether you want to have the circuit be audible, or audibly invisible.

    You can dial it in however you wish, but work must be done... :)
     
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  15. eclecticsynergy

    eclecticsynergy Tele-Afflicted

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    I've been very happy with the stock plain cap treble bleed on my PRSs. I like it a little brighter when I roll the volume way back. Can always tweak the tone knob if I want it warmer.
     
  16. soulman969

    soulman969 Telefied Ad Free Member

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    Yep, all a matter of taste and to what degree you want the circuit to work. Lots of room for personal options.
     
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  17. jrblue

    jrblue Tele-Afflicted

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    Lots of experience with treble bleeds, which I really like. Moosie's comments about values are true to my experience. If you can do so, fiddling with a range of values will help you arrive at the setup that works best for how you use the volume control. I, too, find it ridiculous to rely on the volume knob for making changes to tone, when it's easy to use that other control, you know.. the one called... "tone."
     
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  18. zombiwoof

    zombiwoof Tele-Afflicted

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    The resistor used in the cap/resistor version affects the taper of the pot. It's not necessary unless you want to change the taper. Old vintage Teles had only the cap.
    Al
     
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