Active Baxandall Filter - Different Variations

Started by redbagy, January 22, 2024, 02:13:25 AM

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redbagy

Hi, I'm looking for a good resource to understand better the Baxandall variations.

For example I'm using the BOSS FA-1 one with 2 caps for the Bass and 2 caps for the Treble controls however nearly all examples I've found online use a single Treble cap and there are different Bass variations as well (1 or 2 cap).

Just want to double check any pros/cons for each variation (if any).

Thanks!

antonis

"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..

Rob Strand

#2
Quote from: redbagy on January 22, 2024, 02:13:25 AMI'm looking for a good resource to understand better the Baxandall variations.

This last post is the best example of info showing the differences:

Thread:
https://www.diystompboxes.com/smfforum/index.php?topic=123231.0
Some references:
https://www.diystompboxes.com/smfforum/index.php?topic=123231.msg1164712#msg1164712
Bass cap variants:
https://www.diystompboxes.com/smfforum/index.php?topic=123231.msg1164833#msg1164833
Exhaustive comparison of Baxandall variants:
(It also gives the values to convert from one variation to another, but it is only valid for the specific example shown.)
https://www.diystompboxes.com/smfforum/index.php?topic=123231.msg1164845#msg1164845
Send:     . .- .-. - .... / - --- / --. --- .-. -
According to the water analogy of electricity, transistor leakage is caused by holes.

ElectricDruid

Quote from: redbagy on January 22, 2024, 02:13:25 AMHi, I'm looking for a good resource to understand better the Baxandall variations.

You're in the right place. That "Tone Circuit Theory" thread Rob just posted is a goldmine!

Lino22

Finally i understand the two cap > one cap variant evolution. :)
When the core started to glow and people started yelling, he promptly ran out the door and up a nearby hill.

redbagy

Thanks for all the reading material! Guess I'm gonna be busy for a while now  :icon_biggrin:
Well done on  your in-depth analysis Rob.

Vivek