Marshall Drivemaster Mod (KOT + Aefa Drive)

Stompboxes circuits published in magazines, books or on DIY electronics websites.
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Mr. Lime
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Post by Mr. Lime »

I have an unused Drivemaster pedal which I would like to modificate a bit.

I already removed the hard clipping diodes.
When I looked at the KOT I saw that there wasn't a huge difference, only the tonestack is different.
Mark Hammer's Aefa Drive has an interesting soft clipping circuit that I want to implement too.

I would be glad reading any suggestions, so please feel free to write any idea.
The mods are in red, I'm unsure if the soft clipping in the first stage will work properly..

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Sari
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Post by Sari »

The mods are in red, I'm unsure if the soft clipping in the first stage will work properly..
Yes, since the second stage is actively boosting the voltage seen on it's input it wont be a problem. Tone-wise it might be too compressed or even redundant, but it is really a matter of personal taste.

As for the jumper, might worth the 5 minutes of testing :)
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