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Confusing Tone Pot sweep(Jazz Wiring)

Discussion in 'Pickups & Electronics [BG]' started by heavyfunkmachin, Jan 16, 2013.

  1. heavyfunkmachin

    heavyfunkmachin

    Jan 21, 2005
    AFAIK... best results for Jazz bass pots are linear volumes and audio taper (log) tone pot, this is supoused to give a nice volume sweep when playing clean uncompressed sounds and a usefull tone range.

    Last night I re-did the wiring on a jazz bass, I tried a 500k pot in volume position, it was supoused to be an audio taper pot as described by the ebay seller as I later checked, to find out that most of the volume was in the final 8-10 turn instead of evenly distributed.

    "OK, dumb me, this is an audio/log volume pot" so it's uneven in volume, let's use it for the tone pot. But to my surprise, when wired as a tone pot most of the highs reduction happens in the first 0-2 range!!

    What's going on?
    A suppoused audio/log pot gives uneven volume (volume jump from 8 to 10) AND uneven tone (Brightness jump, from 0-2 it works, but from 2 to 10 it does little or nothing for the tone sweep) :confused:
     
  2. SGD Lutherie

    SGD Lutherie Banned

    Aug 21, 2008
    Bloomfield, NJ
    Disclosures:
    Owner, SGD Music Products
    What brand pot is it? A lot of audio or log taper pots are not really log taper, but a composite of linear tapers. Some brands are better than others.

    Also look at the pot and see if it says A500K or B500K (A=Audio, B=Linear).
     
  3. heavyfunkmachin

    heavyfunkmachin

    Jan 21, 2005
    It's a chinese pot from ebay :bag: no marking other than 500k...

    But what I find confusing is that it behaves as an audio pot when used as volume and like a linear when used as tone pot
     



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