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Capacitor "Test Drive" box

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  • Capacitor "Test Drive" box

    Finally got around to putting together a little capacitor "test drive" box. So far, I've only had a chance to use it on one customer's guitar that we put a set of my pickups in. He liked being able to make his cap selection based on the tone to his ear rather than an internet article to his eyes.

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    Take Care,

    Jim. . .
    VA3DEF
    ____________________________________________________
    In the immortal words of Dr. Johnny Fever, When everyone is out to get you, paranoid is just good thinking.

  • #2
    Very nice and what a great idea. What are your test capacitor's values? I like the way you set it up so you can see the different caps. Did you wire them to a potentiometer or just 0N-or-OFF for each value?
    Last edited by Jim Darr; 06-04-2015, 11:47 PM.
    =============================================

    Keep Winding...Keep Playing!!!

    Jim

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    • #3
      They have made decade boxes since the '50s but it's cool that you built your own. They come in many different ranges. Here's an example: Cornell Dublier Decade Capacitor Box Model CDA 5 O 0001 0 001 Ranges Nice | eBay
      Turn it up so that everything is louder than everything else.

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      • #4
        Originally posted by Jim Darr View Post
        Very nice and what a great idea. What are your test capacitors values? Did your wire them to a potentiometer or just 0N-or-OFF for each value?
        I wish I could take credit for thinking of this, but I've seen a number of variants of it on the internet.

        I just remove one side of the cap in the guitar and clip in where the cap will go (I solder a jumper in if necessary), then put the pickguard of control cover back in place for playing. The switch I used has 8 contacts, but I only used 7 (6 with caps and 1 open with no cap in the circuit at all). You just turn the selector to match the cap you want to put in the circuit.

        I went with the following capacitors types/values:
        - .01F PIO (value used by Clapton for the "woman tone")
        - .022F Orange Drop
        - .022F PIO
        - .047F Orange Drop
        - .047F PIO
        - .1F PIO (late 50's/early 60's Strat value)

        Basically put in the values and types players seem to ask about most often. Easy to change them out though as they are just set in screw type terminal blocks on the underside.
        Take Care,

        Jim. . .
        VA3DEF
        ____________________________________________________
        In the immortal words of Dr. Johnny Fever, When everyone is out to get you, paranoid is just good thinking.

        Comment

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