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  1. #1
    Join Date: Oct 2009

    Location: Birmingham, UK

    Posts: 394
    I'm Phil.

    Default dave slagle pre build

    Building a dave slagle pre , using a seiden 2 pole 23 step attenuator , I understand the wiring from the autoformers but its wiring the switch that has me thinking this
    is from his site ,

    Thats all there is to it! Pay close attention to the switch rotation. When the switch is rotated all the way counterclockwise (off) this is where the ground connection goes, then as you rotate the switch clockwise you simply connect the taps in order (-42, -39 etc.). If you reach full volume (the signal in lead) and still have remaining taps on your switch, simply connect them all together or insert a stop to prevent any contacts from being left open. Further questions about hookup can be asked in the forum.



    its the ground connection that has me confused , if you connect the first pin of the switch to earth it then joins with the output which would give you a short , or am i missing something , any clues phil.
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    Last edited by oceanobsession; 26-11-2019 at 19:36.
    Phil.

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