Duncan tone stack calculator

[stretch2011]

First off this thing is awesome.

I have two questions for anyone who might be really good with this.

1St: how do you calculate Z. I believe this is right term I'm going off memory here.

2Nd: how do you simulate a simple 1 volume 1 tone pot? Like a Princeton of matchless spitfire

[Littlewyan]

http://www.ampbooks.com/mobile/amplifie ... impedance/

Use this calculator to calculate preamp valve output impedance.

Not sure about the simple tone circuit. Probably not worth simulating is it as its so simple?

[stretch2011]

That's a handy little calculator.
In my opinion a cranked Princeton is probably my favorite tone. Don't get me wrong tho that can vary well change. But seeing as its one of my favorites I wanted to see the frequency response so in a future build I may know how to tailor the tone stack to my liking. Or rather have a start in point.

[Littlewyan]

The 1 Volume 1 Tone controls just simply roll off the high end a bit. Not really worth calculating. Besides, you're better off hearing the effect rather than seeing it . If it was a 3 control tonestack (Bass, Middle and Treble) then yeah you'd want to see it first but not for a simple control like that.

[roberto]

I don't like those treble-bleeding tone controls.

The Carmen Ghia is way better (it's sort of Selmer frequency shape between 1st and 2nd stage) and gives a midcut plus a balance between lows and highs.

I use this king of treble-bleeding tone control only when I want to add a presence control to modern hi-gain leads with dedicated tonestacks.