This is a library of perfboard and single-sided PCB effect layouts for guitar and bass. I'm not an electrical engineer by any stretch of the imagination, just a DIY'er who likes drawing layouts. It is meant for the hobbyist (so commercial use of any of these layout is not allowed without permission) and as a way to give back to the online DIY community.

Monday, August 14, 2017

Tortenmann TA-100

Came across the schematic for this and thought it would be a good addition. It's a unique germanium overdrive using PNP AC128s, though the effect is a negative ground effect (so it can be daisy chained with other pedals). The TA-100 has been used by Ryan Adams and sounds great through a Princeton Reverb. Schematic here on FSB.


7 comments:

  1. Layout is good y'all.... The only thing is the gain pot goes from just breaking up to all out crazyness in the last 5%. The gain switch kicks things up a notch for sure. Turn your guitars volume pot down and you can get some great tones out of this. You should build this. I built mine with NOS 2n408s and bat41's cause I ran out of 1n34s. Have some on order so will report back once I receive them. Another great layout brotha!!!

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    1. Cool. Thanks for verifying! You might want to try a C50k (rev log) pot for the gain to even out the sweep.

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  2. Does this require AC128's of a certain gain/hfe? Thanks for the layout!

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    1. Nothing was posted about the transistors being a certain hfe. You'll probably have to experiment with that. But it should work with other PNP germanium transistors as well.

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  3. What does it mean when I keep popping that 470uF electrolytic? Done it twice now.

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    1. Is that the only component affected? Are you using a negative ground power supply?

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  4. I'm using a PP2+. The gain and tone knob don't seem to be working either, just the volume. Didn't see any noticeable bridges, I may just have to rebuild it.

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