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No volume just tone in passive setup... How?

Discussion in 'Pickups & Electronics [BG]' started by trainyourhuman, Feb 7, 2006.


  1. trainyourhuman

    trainyourhuman

    Apr 12, 2000
    MI
    I am having a single pickup passive bass built, and I want to forgo the volume control. How would I go about doing this?

    I have been reading up on pots etc. and have done a bunch of searches and I still don't have the answer I'm looking for.

    Do I have to have a volume control in order to have a tone control?
     
  2. Passinwind

    Passinwind I Know Nothing Supporting Member Commercial User

    Dec 3, 2003
    Columbia River Gorge, WA.
    Owner/Designer &Toaster Tech Passinwind Electronics
    Nope. If you're looking to create the usual load for the pickup, just use a resistor of the same value as the normal volume pot for that pickup.
     
  3. trainyourhuman

    trainyourhuman

    Apr 12, 2000
    MI
    I see. What about loads? Do I need to put a resistor on there at all? Would the pickup soun d/act any different? Sorry, I'm new to this kind of thing.
     
  4. Passinwind

    Passinwind I Know Nothing Supporting Member Commercial User

    Dec 3, 2003
    Columbia River Gorge, WA.
    Owner/Designer &Toaster Tech Passinwind Electronics
    The taper of your tone control will be a bit different without the load resistor in front of it, and your bass may seem a bit brighter and hotter overall. That could be interpreted as "harsh" in some cases though. Just have a try and see what you get. You don't have to use the resistor if you don't want to. Up to a point, the load resistor mellows highs and increases apparent low end as it decreases in value, but it's usually easier to just listen than to try to do the math. It'd be worthwhile to experiment with different cap and pot values for your tone control too.
     
  5. without the volume pot, the roll-off point will be altered a little bit, but not appreciably (only vary by about 5%)...and the response of the knob will be altered (again not appreciably)...

    why you'd want just a tone knob, however...???...oh well, it's doable, and if you want it...go for it.