how to modify morley flanger into true by-pass?

Started by bent, August 17, 2008, 10:32:25 PM

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bent

i'm loocking forward to build this morley flanger http://www.morleypedals.com/sfbes.pdf

but it seem to me that the pedal have somesort of buffer , so the switch in the right top corner switch between effect and bypass

but i would like to build it true by-pass....so i was wandering wich parts need to be removed to not use the switch flanger-bypass

thank you very much

bent
Long live the music.....

petemoore

  it looks like Sw1a switches the output from flange to bypass.
  I don't think I'm reading this wrong...
  The input feeds that bypass but goes through a buffer OA stage, and the 3007 before being outputted, I wonder what that sounds like.
  To true byass looks simple except...
  Sw1b is also switching something down below that I don't understand that well, must be the LFO, and probably switches that to bypass for noise supression.
  So, you 'could' lift the output switch connections, and using a 3PDT, assigning the next row of lugs to truebypass the input, and the last row to do the LFO switching honors, ada millenium bypass [caveat?] if you need to be able to tell when the Flange is on.
  But don't trust that this will flawlessly work, I just gaped for a minute and saw the output gets a line from toward the input [coming out of the 3007] for 'bypass'.
  And U1b is a clipper ? Now I really wonder, does it sound fuzzy or distorted at all in bypass ?, 22k is a modest amount of gain, but with a booster in front...interesting...must be there to keep the flanging circuit seeing 'x' amount of peak input so it doesn't distort.
  So..it looks like it'll at least work to me, may be worth a try, perhaps another member wants to second look  it over.
  Note...there's a '680' ohm between Gnd and signal output, smallest I remember seeing by far.
Convention creates following, following creates convention.

bent

the simplest idea i had was to just jumper the 'flanger' to ground, and just use the true by-pass with the in-out, but i was wondering if i could remove some part just to not put some parts that doesnt need to be there...

thank's pete

bent
Long live the music.....