DOD - FX102 Mystic Blues Overdrive  [schematic]

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DOD - FX102 Mystic Blues Overdrive

Postby modman » 29 May 2015, 11:46

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"The whole point of diy is diy. It's not dsoiyathodtr - do some of it yourself and then have others do the rest" (paulc)

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DOD FX-102 Mystic Blues  [schematic]

Postby camljenkins94 » 18 Nov 2017, 19:03

I've been bitten by a bit of a DOD bug recently, and I've made a hobby of modeling the FX series of pedals in LTSpice to see how the tone is shaped, how they distort, et cetera. However, I'm having a bear of a time trying to model the FX-102 because the schematic that is commonly available is rather poorly laid out and difficult to read. After spending about an hour redrawing the schematic, I decided to model it, only to find that the EQ, as drawn in the schematic, has a practically useless treble control (According to a bode diagram). I tried rearranging a few bits of circuitry to get the treble control to respond, which was mildly successful, but I'm now doubting the accuracy of the schematic that is available online.

FX102 As According to Schematic.PNG

FX102 Mod.PNG

So, I'm wondering if any of you marvelous people have any ideas to put forward or FX-102's to trace. If you do, it would be very much appreciated.
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