All 4558's are not created equal! - Mu-Tron Phasor II proves it

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Thanks Sophie

I realise that this is a very old thread - but then after all, *I* was interested enough to read it and it remains here as interesting reference material.

I built a clone of the Muton Phasor-2 by butchering a Bell phaser.  The board was close enough in general to do a build with a few small tweaks here and there.
- I never did get it to sound quite as succulent as the real pedal.  Close.....but not quite - although I have not yet given up and am thinking of revisiting the problem after a 15 year lay off from even playing.
In searching for stuff about the pedal, I found THIS which (apparently) gives details of how the original Mutrons were set up and tuned.
http://www.bruynooghe.fr/public/effets_vintage/Phaser/MutronMU-01PhasorIIServiceManual.pdf

I add it here because it may in the future be the answer some lost soul is pining for  :-)