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1967 Vox Super Berkley III.....2500 mF Filter Cap?

Discussion in 'Amp Tech Center' started by DennisM, Feb 24, 2021.

  1. DennisM

    DennisM Tele-Meister

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    I'd like to put in a couple new filter caps in this old SS Vox. Is there such a thing as a 2500 mF cap? It clearly says 2500 mF and 35VDC. Anybody ever see this? Are the 00's silent? I've checked and I can't find anything even close! There are two cans and they both read these values.

    2500 cap 001.JPG
     
    Last edited: Feb 24, 2021
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  2. DougM

    DougM Poster Extraordinaire

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    Dig-Key has electrolytic caps up tp 900,000uf
    https://www.digi-key.com
    A quick search there shows the exact value you want- 2500uf 35v for $3.14
     
    Last edited: Feb 24, 2021
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  3. schmee

    schmee Doctor of Teleocity

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    Yep, ran into that once. I may even have a new one here, but it's not a can.
     
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  4. DougM

    DougM Poster Extraordinaire

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    s-l1600.jpg Very large value filter caps are quite common in audio amps
     
    Last edited: Feb 24, 2021
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  5. dan40

    dan40 Friend of Leo's

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    Your cap is rated at 35v so anything that you find with a higher voltage rating will work. As for the capacitance rating, anything close to 2500uf will work fine.
     
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  6. DennisM

    DennisM Tele-Meister

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    I'll check there. I couldn't fine anything close at AES. Thanks!
     
    Last edited: Feb 24, 2021
  7. DennisM

    DennisM Tele-Meister

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    I was not really planning on using a can anyway. If there's enough room to sneak one in that is. Haven't opened it up yet.
     
  8. DennisM

    DennisM Tele-Meister

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    I've never ordered from digi-key. I hate to start out with a $6 order. They probably wouldn't go for an order that small anyway.
     
  9. DougM

    DougM Poster Extraordinaire

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    Why not? $6 is $6. How many times have you bought one set of strings from your local guitar store? Did they refuse you because you only spent $6? I think not.
     
  10. W.L.Weller

    W.L.Weller Tele-Holic

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    Digi-key will absolutely sell you a $6 order. If you feel the need, I'm reasonably sure they sell Switchcraft plugs and jacks, as well as potentiometers, and many other components useful to guitar & amp owners.

    Also, for your reference, solid state amps tend to have filter capacitors "opposite" from tube amps. That is to say, high capacitance and low voltage. I think my Yamaha G100 uses a pair of 2200uf caps @ 35 volts.

    Places like AES or TubeDepot don't tend to have these caps. Maybe in a few more decades all through-hole components will be antiques.
     
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  11. DennisM

    DennisM Tele-Meister

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    One of the cans has a bolt on holder, and the one in the photo above is like you'd fine in a champ...I'm sure the tabs are grounded. I haven't opened it up yet. I'll do that tomorrow. The one with the bolt on holder is a tad physically smaller can, but is the same values. Maybe I can order a holder and a few more items to go with them. I can hear the buzz and hum for a second or two until the caps fill up. They don't hold a charge. It also pops pretty loudly when I turn it on and off. They're 54 years old. This amp head was given to me a couple months ago, and by golly, for a SS, it don't sound bad at all. Thanks for the civil response.
     
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  12. Wally

    Wally Telefied Ad Free Member

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    DigiKey or Mouser either one will fill that order.
     
  13. the fatch

    the fatch TDPRI Member

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    These days, caps come in preferred values. 2200uF caps will do the same job as a 2500uF cap. 3300uF caps would be OK if they physically fit.
     
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