I am a total noob so apologize if this doesn't belong here but I haven't had any luck finding an answer to this...

I have a simple circuit with two 555 timers...similar to an Atari Punk Console. I have a switch in my circuit to switch between a headphone jack and a built in speaker (I know there's switchcraft plugs that do this. I just don't have one yet).

Anyway, the problem is the audio level/volume range is great through headphones with a 50k pot, but switching to my small 8 ohm speaker the output isn't loud enough unless I switch to a 2k pot. But then with the 2k pot, audio level through my headphones is deafening.

I guess my question is, is there any (relatively simple) way to have the same pot utilize one range when running through one output path and a different range when going out another?

Does this even make sense?

Or am I thinking about this all wrong?

Incredibly grateful for any input.

Thank you!!!enter image description here

  • 1
    \$\begingroup\$ Linear pots are not used here and Audio taper or logarithmic pots are better for UX. But current for 8 Ohms MAY burn out Pot contact so it is used on input, not output. \$\endgroup\$ – Tony Stewart Sunnyskyguy EE75 May 16 '17 at 6:58
  • \$\begingroup\$ BTW you may be able to see in the photo that I tried adding a 220k resistor in series with the headphone jack output but all that did was lower the entire level and essentially nullify the 2k pot. \$\endgroup\$ – Elliott Samuel Lemberger May 16 '17 at 6:59
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    \$\begingroup\$ Move pot to input using source to pins 1 or 3 and output from 2 with other pin common ground. If numbered Pot wiper goes from 1 to 3 in CW direction. with 3 as input and 1 = gnd and 2 output using a LOG pot. \$\endgroup\$ – Tony Stewart Sunnyskyguy EE75 May 16 '17 at 7:00
  • \$\begingroup\$ @TonyStewart.EEsince'75 thanks! Very excited to try that out and it almost seemed to be working until I smelt burning and realized I burned out my 2k pot. Not sure exactly what I did wrong there...may need to sleep on it and try again tomorrow. Definitely going to look into the other pot types you mentioned as well. Thanks immensely for the input! \$\endgroup\$ – Elliott Samuel Lemberger May 16 '17 at 7:16
  • \$\begingroup\$ Put resistors in series to shift the range, put them in parallel to make them smaller and non linear. \$\endgroup\$ – PlasmaHH May 16 '17 at 7:35

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