Author Topic: Another Inductorless Wah, now with Sallen-Key filter  (Read 937 times)

CurlyMo

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Re: Another Inductorless Wah, now with Sallen-Key filter
« Reply #15 on: August 25, 2017, 10:28:24 AM »
That's really really cool!

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culturejam

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Re: Another Inductorless Wah, now with Sallen-Key filter
« Reply #16 on: August 25, 2017, 01:49:47 PM »
Damn, that's awesome.

lrgaraujo

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Re: Another Inductorless Wah, now with Sallen-Key filter
« Reply #17 on: August 26, 2017, 08:34:33 AM »
Wonderful job as usual, Thomasha!

I'll give it a go as soon as I have the time.
Little question though, is R10 really a 1 ohm resistor?

Lubdar

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Re: Another Inductorless Wah, now with Sallen-Key filter
« Reply #18 on: August 27, 2017, 10:01:48 PM »
That's really great!!!
(--c^.^)--c

thomasha

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Re: Another Inductorless Wah, now with Sallen-Key filter
« Reply #19 on: September 11, 2017, 12:11:24 PM »
R10 is a 1 ohm resistor, but you can use a jumper.
The thing is that if you put a 1k potentiometer there you can change the Q frequency.
The resistor is there so I could tweak the circuit, but in the end it sounded better with the pot. shorted

Aristatertotle

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Re: Another Inductorless Wah, now with Sallen-Key filter
« Reply #20 on: September 11, 2017, 01:25:40 PM »
So I guess the BOTY contest this year is just for runner-up positions. ;D

Awesome build!

Funkymonk

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Re: Another Inductorless Wah, now with Sallen-Key filter
« Reply #21 on: November 11, 2017, 06:59:11 PM »
Made one, also in a 1590ish enclosure. Sounds great!. :D
All the components are from Tayda. Tayda's LDR (they only sell one type) resistance goes from ~0.9kOhm to ~1.5MOhm using an "ultra bright" white LED.
Thank you Tomasha!.



Addy Bart

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Re: Another Inductorless Wah, now with Sallen-Key filter
« Reply #22 on: November 13, 2017, 05:41:27 PM »
Hi guys!
Have another cool project for you.
The guy over http://cackleberrypines.net/transmogrifox/TransmogriNotes/skwah/index.html
came with this idea and presented all the simulations and results.

If you remember, I built a colorsound wah, but it wasn't that intense as the other circuits that do use an inductor.
So I gave it a try, and now here is the result>



It really sounds better than the colorsound wah. I still need to make a comparison video, but until then, here is a short video of it. I'm still learning how to control a wah, for the second time...

<a href="http://www.youtube.com/watch?v=n7Od-5ri3T8" target="_blank">http://www.youtube.com/watch?v=n7Od-5ri3T8</a>
Hope you like it!
I made a small file for it, but it's not as good as the madbean documents.
https://www.4shared.com/office/NSk921Alca/Inductorless.html

Cheers,
Thomas

That’s amazing. I’d love a wah that size.