tone control

[emosms]

Trying to simulate a bass tone controll.
Seems I get the same frequency responce at all potentiometer states.

What could be wrong...

 

[matulo_g]

Seems that U3B has no power supply connected...

Martin

 

[Ketje]

Try RV3=100k and C33=C34=6n8
Mona

 

[Mooly]

Can't see anything obviously wrong.

Have you got the pot configured correctly in the simulator?

Snip the pot out and replace with two resistors of 11k. Connect the 'wiper' to each end in turn and also to the centre point and see if you get boost, cut and flat.