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Starting a 5F2-A build, capacitor questions

Discussion in 'Shock Brother's DIY Amps' started by JoeSixPack74, May 3, 2009.

  1. JoeSixPack74

    JoeSixPack74 TDPRI Member

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    I have most of the parts to build one of these in my parts boxes except some of the caps. I have a question about 2 of the caps in the Fender schematics that have values but no voltage ratings. On the Tone pot there is a .005 uF cap with no voltage listed and the cap that goes between the tone and volume pots .0005 uF. I have found the .0005 uF cap available in 500v ceramic and the .005 uF cap available as a 250v ceramic. I figure those should work but would like it if someone double checks my figuring. The only other cap I cannot find is the 16 uF 450v, from reading other posts and other sites I am substituting 22 uF 450v in there place. I probably could do that for the 8 uF caps also and save a couple bucks.

    It was also recommended going with a 12" speaker instead of a 10". Any thoughts on that?

    Figure since I am building a Tele style guitar I should build the amp too. I have the Burnt Pinecaster thread in the build forum.
     
  2. sjhusting

    sjhusting Tele-Afflicted

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    The cap on the tone pot isn't seeing much voltage, so just about any cap will work, ceramic, mallories, ODs, whatever you want. You might not find a .005; you can use a .0047 and there will be no difference.

    The 22uF will work fine. A 5Y3 is only rated for a 20uF, but it won't be a problem.

    Remember that the Sovtek 5Y3 (the only current production 5Y3) isn't a real 5Y3, and will give you higher voltages than you might expect.

    steven
     
  3. FiddlinJim

    FiddlinJim Tele-Holic

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    If you want to keep it as close to the original as possible, Antique Electronic Supply (tubesandmore.com) has 16uF caps readily available. On their site, follow Capacitors -> Electrolytics -> F&T Axial Lead and you'll find them. I've been using F&Ts for everything I build with no problems. They're made in Germany and are quite a big smaller than the huge Sprague Atoms.

    They're also a great source for other things like silver mica capacitors for the low-value caps if you want an alternative to ceramic disk caps.
     
  4. JoeSixPack74

    JoeSixPack74 TDPRI Member

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    Thanks for reminding me of that site. I don't know how I forgot about it as I used to fool around with tube radios.
     
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