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Tone dead!!!!

Started by Kipper4, November 10, 2015, 06:03:29 PM

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Kipper4

Hey guys
So I made a screamer type circuit nothing extra ordinary and decided to try an active baxandall on the output.
Clipping amp, voltage follower,active bax.     All op amp.
I'm getting dead spots when adjusting the tone controls.
Why would this happen.
What could be a good remedy
Thanks
Rich


The active bax can be found here at the bottom of the page.

http://www.parasitstudio.se/building-blog/pcb-layouts-and-filters

Edit
Did I mention it's on a breadboard.
Ma throats as dry as an overcooked kipper.


Smoke me a Kipper. I'll be back for breakfast.

Grey Paper.
http://www.aronnelson.com/DIYFiles/up/

antonis

If by "dead spots" you mean no tone adjustment (variation) does it happen with both tone pots..???
"I'm getting older while being taught all the time" Solon the Athenian..
"I don't mind  being taught all the time but I do mind a lot getting old" Antonis the Thessalonian..

Kipper4

Naa mate i mean i got no sound at all.
I put a series resistor before it and its tamed it. I guess it didnt like the clipping amps output impedance.
Its not cutting out now. something are still niggling me though. #highpitchedsqueel.
Ma throats as dry as an overcooked kipper.


Smoke me a Kipper. I'll be back for breakfast.

Grey Paper.
http://www.aronnelson.com/DIYFiles/up/

antonis

Strange thing Rich..

Tone control has it's own series resistors (10k for Bass & 3k9 for Treble - if you didn't alter values..) so it shouldn't happen something like that...

edit: You've told that there is a buffer between clipping amp and tone control.. This complicates more the "no sense" situation..
"I'm getting older while being taught all the time" Solon the Athenian..
"I don't mind  being taught all the time but I do mind a lot getting old" Antonis the Thessalonian..