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  1. C

    Nobelium - tube bass preamp project

    I've been lurking around these Nobelium threads and thinking about building one, but I haven't dared: I've built a few pedals but never a tube or high-voltage one. What would you say are the key considerations/things to take into account when building this vs a "regular" non-tube pedal? Or...
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    Aion Meridian (Bass version)

    Awesome! That said, I'm clueless and I can't figure it out. I see here (https://www.elde.cz/datasht/ca3080.pdf) that in the old CA3080, pins 5 and 6 are "input bias" and output, but the LM13700N seems to have two pins as input bias (1 and 16) and 2 more as outputs (5 and 12)...
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    Aion Meridian (Bass version)

    Looks amazing! I just finished this build (my first!) but can't find any info on how to tune/set up the bias trimmer inside. What did you do with yours?
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