Tuesday, 30 May 2023

Boss GE-7 Equalizer

 Schematic is avaiable HERE.

 



7 comments:

  1. Hi, I've been waiting for this one to come out for a while - can't wait to build it :) thanks for all these layouts and take care!

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  2. Any chance of a GEB 7 layout ? Or maybe some mods to this one for bass? I’m not far enough in my quest for knowledge to be able to do it on my own.

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    Replies
    1. GEB-7 is uploaded.
      https://dirtboxlayouts.blogspot.com/2023/06/boss-geb-7-equalizer.html

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  3. Sir in the schem that 4.7 k res(soldered to 15nf cap) on the inverting input of ic1 should be 470 ohms in the boss ge7 schem.maybe you could take a look at this sir.

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  4. I checked the layout against the schematic and I noticed 4 things:
    1. R4 is 470R but on the layout it's 4.7k. It's the nearest 4.7k resistor to the right of IC1.
    2. C25 is missing. It's the 100n cap after the diode. If it handles voltage drop, then I think you can just put one parallel to the 100n at the bottom.
    3. C6 (1u) is upside down. In the schem, after the output of IC2_B it goes to the negative of C6. It's reversed in the layout (it's the 1uF cap near 200Hz 2)
    4. C21 (1.5u) is also upside down. In the schem, lug 2 of the 100Hz pot goes to the positive side of the 1.5u cap.

    I hope this helps. Cheers. :)

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