Monday, 14 September 2026

Runoffgroove Mr. EQ

 Schematic is avaiable HERE.


 

3 comments:

  1. I believe you can get away with SPST switches for Hi and Lo, but the SPDT for the Mid should be on-off-on, according to the schematic.

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    Replies
    1. Yes, the ROG layout uses spst switches for Hi & Lo

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  2. I do love a CMOS circuit and I finally found time to build this. It works great and the only anomaly is that the input cap at 8B/8D should be 15nf instead of 47nf. Otherwise this one can be tagged.

    If you want to go crazy, swap in a 10M resistor on a switch for the 560K resistor that's in series with the gain pot.

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