Author Topic: Blending 2 capacitor values with a pot?  (Read 381 times)


  • Solder Ninja
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Blending 2 capacitor values with a pot?
« on: October 04, 2019, 11:00:17 AM »
Iím going to build myself an attenuator using a L-pad to tame my Dr Z maz 18. Iíve learnd that when attenuating a signal you loose highs and the schematics I follow use a 2 pole on-off-on ĒtrebleĒ-switch (2 diffirent caps) before Lug 2 of the L-pad (to filter out bass?). I was thinking i could use a potentiometer to blend one small and one large capacitor instead of the on-off-on switch. Unfortunatly I dont know how to execute this. Could someone tell me how this should be wired? What pot and cap-values that might work?
« Last Edit: October 04, 2019, 11:02:53 AM by Sigesmundninja »

Feral Feline

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Re: Blending 2 capacitor values with a pot?
« Reply #1 on: November 30, 2019, 04:22:19 AM »

If you haven't already figured it out by now...

Download this PDF, Joe Gore's got you covered.

That should show you how to wire it up, more or less. He's using a B100k pot (linear). You'll have to play around with cap values to see what works for your needs. Use sockets on a chunk of vero-strip, or perf-board. I suggest starting with the stock cap values and maybe you're done; but if it still isn't enough, start swapping caps.