Monday 15 July 2019

ZVex Mastotron


9 comments:

  1. Built this and everything works great except for the sub switch. Position 1 and 2 work but not 3. I get extreme sub or no sub. I have checked all the usual suspects. No solder bridges, wiring seems correct. I can’t figure it out for the life of me. Any ideas on where to look.

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    1. Hi there! It seems that I forgot to update the layout. Tone 2 and Tone 3 board connections needs to be swapped.

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    2. Hello, just wondering if you updated the layout with the connections swapped? I'm planning on diving into this one

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    3. Yes, the lug connections is swapped in the layout.

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  3. Hmm, didn’t seem to change

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  4. I’m fairly new at this. Can you tell me which components are involved in the sub switch. Looks like the 68nf, 33nf and 100 uf? Maybe one is bad?

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    Replies
    1. Yes, it is possible that components goes bad. The caps you mentioned is connected to the switch indeed, as well as the tone control.

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  5. This doesn't suck. Why did I think that it did?

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