|
Post by frets on Apr 20, 2021 11:37:40 GMT -5
Hi Fellas,
I know this is a simplistic request to a more complex interaction between pickups and pots and caps; but, I was wondering what the generic Hz cutoffs were on the following caps: 10nF 15nF 22nF 33nF 47nF 56nF 68nF 82nF 100nF So, to boil it down to basics, let’s say I have a 15k bridge humbucker and an 8k neck humbucker. - A500k pots. For each of the caps above, I strum the guitar. What frequencies would be produced for the aforementioned values? I just want a ball park idea. And not for each string, for all 6 strings. I want to compare Hz values of caps alone, RC circuits. and pass filters. It’s more of an exploratory to better understand the relationship between caps and Hz.
Can Guitarfreak do this?
|
|
|
Post by roadtonever on Apr 20, 2021 15:38:45 GMT -5
You need to know the inductance as Henries at the very least, besides the cap you want to use. There's an equation for caluclating the cutoff but I use an online calcuator because it's faster.
|
|
|
Post by JohnH on Apr 20, 2021 17:11:01 GMT -5
Hi frets, Something like GuitarFreak (or a SPICE sim) is the best way to do that because what a cap does to the tone is entirely dependent on the circuit its in, and the values of the surrounding parts. Plus, its not a really sharp cut off, more of a soft roll off in most cases, or it could interact with the pickup and make a hump. The plots on this thread go there.... guitarnuts2.proboards.com/thread/7166/effect-tone-capacitorsIn an active circuit, like a simple treble roll-off in a stomp box, its a bit simpler but you still need to know about the resistances interacting with the cap.
|
|
pedanticus
Rookie Solder Flinger
Posts: 8
Likes: 1
|
Post by pedanticus on Sept 5, 2021 5:07:42 GMT -5
If you just want some numbers to play with: look up data sheets for a big brand manufacturer. They all provide freq. response tables for serious techies...or curious Guitar Nuts. Not sure how those nice and precise curves will correlate with cheaper (or antiquated) options, but probably a good place to start that ball game.
|
|