Can anybody tell me what material with this tone cap

Discussion in 'Pickups & Electronics [BG]' started by Yahboy, Jul 10, 2013.

  1. Yahboy


    May 21, 2008
  2. NaH


    Mar 14, 2010
  3. Looks like a cardboard tube, so it is probably film based.
  4. bassbenj


    Aug 11, 2009
    Note the one that looks like it on the right of the row of caps in the last link:

    "mystery vintage gray cylinder (now identified- Mullard Mustard polyester film/foil),"

    Which seems to confirm it as a polyester film capacitor (which as you can see was dipped in some kind of goo to seal it.) A film cap is the right kind to use for tone circuits. Stable values and low loss.

    Generally in my tone circuits I use the Yellow ones a couple to the left which is essentially the same capacitor. I use them just because I have a drawer full of them.
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  6. Yahboy


    May 21, 2008
    thks for reply.