Durham Electronics - Sex Drive  [traced]

General documentation, gut shot, schematic links, ongoing circuit tracing, deep thoughts ... all about boutique stompboxes.
albru80
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Post by albru80 »

Cool!
If you like vero...
Durham Sex Drive.png

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ansil
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Post by ansil »

So basically it's another Tube Screamer?

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jalmonsalmon
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Post by jalmonsalmon »

ansil wrote:So basically it's another Tube Screamer?
what I am thinking too :slap:

sugarinthegourd
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Post by sugarinthegourd »

Reviving this old thread. Is this verified? Thought this pedal had buffered bypass but I'm not seeing that here.

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mauman
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Post by mauman »

Yes, I can verify this schematic and vero layout. The first version was true bypass, then Durham shifted to buffered bypass due to switch popping. This trace shows the true bypass version, you can mitigate the pop quite well with an input pull-down resistor (1M to 2.2M) to ground before R3, plus the Jack Orman LED soft turn-on mod (http://www.muzique.com/lab/led.htm ). Mike

Ben N
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Post by Ben N »

As drawn in Modman's schematic, the bypass is neither true nor buffered, but rather good old tone-sucky always-connected-to-the-input bypass.

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