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  • June 8, 2009 at 8:04 am #78368
    whitestripes3
    Member

    Hi, I bought a used Russian (Black Box) Big Muff about a year ago and have decided I’d like to add an expression pedal Jack to control the sustain knob so I could alter the subtlety of the pedal without trying to turn the chickenhead with my foot.

    If anyone could help me with this I would be very thankful, I know how to follow schematics and wiring directions and I know how to solder; however, I’m lost when it comes to figuring things like this out.

    Thanks,
    -Josh

    Ps. The Schematics of the pedal can be obtained here (I tried to attach the file but it was too big):

    http://www.premierguitar.com/Magazine/Issue/2009/May/Electro_Harmonix_Russian_Big_Muff_Pi_Pedal_Mods.aspx

    June 10, 2009 at 6:40 am #97632
    devnulljp
    Participant

    How about just getting one of these — less hassle (unless you enjoy the drilling, soldering, troubleshooting part).
    pedal.jpg

    June 10, 2009 at 1:26 pm #97645
    julian
    Moderator

    I wouldn’t get the third hand, big, and I’ve heard it is poorly built.

    However, since the Sustain knob is a 100k pot, and most expression pedals use 10k pots, I don’t know that it would work too well.

    What you could do is get a really big knob that has grips on the side, and mount a second sustain knob on the side of the pedal. This is often referred to as the expression knob method.

    June 10, 2009 at 2:46 pm #97653
    whitestripes3
    Member

    The pedal itself isn’t the issue. I’ve figured that part out. It’s the circuitry inside the pedal itself.

    I thought about the second knob but wouldn’t that require a switch?

    June 11, 2009 at 8:09 pm #97737
    AutoPRND21
    Participant

    You can use the MoogerFooger expression pedal – it’s a 100k. Wire up a 1/4″ jack to two of the three legs on the BM sustain pot, then use the MoogerFooger expression pedal to control the sustain.

    June 12, 2009 at 2:25 am #97764
    whitestripes3
    Member

    I’ll try that, thanks

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