Duncan Tone Stack Calculator vs Spice

[thehallofshields]

Okay. Don't get me wrong. I love the Duncan tool...I just need more. Mainly the ability to add or subtract components.

Can anyone link me to a tutorial (that isn't written for engineers) on how to get a Graph of an AC Sweep in Spice?

[Gus]

search for spice videos and and also look for the yahoo group and other web sites.
There is also a sim section at this forum

some links
http://www.diystompboxes.com/smfforum/index.php?topic=93814.0
http://www.diystompboxes.com/smfforum/index.php?topic=93990.0
http://www.diystompboxes.com/smfforum/index.php?topic=96621.0

[GibsonGM]

Do a net search, "LT Spice AC Analysis".   This will get  you started: http://www.linear.com/solutions/4581
I'd use LT Spice in the search terms, so you avoid getting JUST Spice stuff, which is way more complicated if you haven't gotten LT down fully yet (IMHO).

I love using LT for this stuff...after a while it gets simple to use, you just have to 'get going' with it!  Glad to see others wanting to find out more.

You'd maybe want to look up " LT Spice .STEP"  and "LT Spice .PARAM" after you start doing some AC stuff...the will let you sweep the value of a pot etc. and show the traces, like Duncan's TSC.     Basically you set something like "X" to step thru a bunch of values, and plug "X" into the component values (like a pot, you would make the resistance stetting "X").     You DO have the pot model, right?  Sometimes people can't find it.

Often you can find a personal site someone's done that has downloadable examples of just this, and you can tweak the components and ranges of sweep!    

[teemuk]

The built-in "Help" of LTSpice is also excellent.

In many cases it covers the same things as popular "tutorials" from 3rd parties. In many cases it is also better and more in-depth that those tutorials.

Way too overlooked feature, IMO.

[mth5044]

Check out the Gauss Markov tutorials, I think they will be right up your alley.

[Frank_NH]

I was able to work with LT Spice pretty quickly and I'm just a lowly mechanical engineer 

Filter networks are an easy way to get going.  I modeled the SWTC and played around with component values - great fun.  I then found some sample distortion circuits (e.g. Distortion +).  It takes time getting comfortable with connecting and editing components in the schematic, but once you have that down you can go to town.  Have fun. 

[cctsim]

http://www.diystompboxes.com/smfforum/index.php?topic=82704.0

[PBE6]

I've had a lot of fun playing around with Circuit Lab. It's not free, but the interface is very friendly and there are time and frequency domain graphing functions built in. Has helped immensely in my understanding of various stompbox modules.

[dthurstan]

Check out this link, quick guide to the bd2 tone control.
https://sites.google.com/site/cctsim/home/frequency-response-circuit-simulation-via-ltspice
Worth having a look at the other at the other articles.