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Furman parametric eq distorted

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  • #31
    Draw it by hand, pencil and paper (and an eraser), donīt worry it looks "ugly".

    If after erasing and redrawing itīs a mess, copy the definitive (or working) version on a fresh sheet of paper and upload its picture.

    We all do that for starters, what else?

    Only when we are certain schematic is good we may redraw it onscreen, for publication or something.

    Just start with a relatively simple block, ane which all know what and where it is, such as the input circuit.

    And that will allow us to compare what you actually have there and the official version.

    So first "homework" woud be to upload 3 images:
    * your input stage drawing
    * same area fron the officia version
    * same area closeup picture.

    IF the last one is illuminated from below and from above so we can read values and at the same time roughly see tracks, it will help check the first two ones.
    Juan Manuel Fahey

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    • #32
      Sorry for the delay. Tell me what if any good these do:

      Click image for larger version

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ID:	853737Click image for larger version

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ID:	853738

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      • #33
        Click image for larger version

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Size:	3.33 MB
ID:	853746

        This is the available schematic that seems to contradict what I have

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        • #34
          Hi, nice thread is anyone left here for a thought? what does anyone think about replacing the 4558's with OPA2134 ?
          please
          thank you
          ns


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