Changing the Frequencies of the 6-Band EQ..

[Caldo71]

Hey so I am hoping to start building the 6-band EQ (potentiometer version) very soon, but would like to change the frequency center on each pot to something different than the stock kit.

I just KNOW that I’ve seen a thread about how to do it on this forum, but for the life of me I can’t find it now…I looked and looked and looked.

It involved a handy online calculator where you just punch in the frequency center you want, and it generates the resistors and caps you need to swap in for each pot.

Can someone point me back to that thread or the calculator?

I found this thing via Google, but it doesn’t work the way I’m envisioning…

Guitar Pedals: Gyrator Filter Calculator

Calculate freuqency cutoff for guitar effects pedals with vacuum tubes and solid state electronics. FREE calculator.

www.muzique.com

…it seems if I punch in the frequency center I’m looking for and hit “calculate”, the whole thing just goes haywire.

 

[Feral Feline]

IIRC, the PPCB 6-band isn’t a gyrator-based design.

Here’s another freqy corner calc from Orman:

Guitar Pedals: R-C Filter Calculator

Calculate frequency cutoff for guitar effects pedals with vacuum tubes and solid state electronics. FREE calculator.

www.muzique.com