Baxandall filter with LM358 op-amps

[67553]

If someone else runs into a similar problem check the pot's I was naive enough to think they will be okay, but sadly when I checked them (they were russian) It turned out the double pot had different resistance in each pot inside. One had 100K (which I needed) and the other 4.7M. So that is why when I turned the pot all the way to the either end the speakers started to screech 🙂 Bought new ones and the problem fixed itself 🙂 Thanks everybody for the help 🙂

 

[blu_glo]

If someone else runs into a similar problem check the pot's I was naive enough to think they will be okay, but sadly when I checked them (they were russian) It turned out the double pot had different resistance in each pot inside. One had 100K (which I needed) and the other 4.7M. So that is why when I turned the pot all the way to the either end the speakers started to screech 🙂 Bought new ones and the problem fixed itself 🙂 Thanks everybody for the help 🙂

Great work! It was a pleasure assisting....

 

[blu_glo]

And use linear taper pots. Those passive versions which used unequal cap values used audio (semi-log) taper pots. You don't want those with the feedback-type circuit.

Thanks for that it was indeed intended to be included in my reply I think it fell foul of some copy-and-paste activity. .......