Vibrato

[David]

Are there any vibrato kits available apart from the BYOC VB2 clone?

You may want to look at this:

http://members.shaw.ca/roma/vibrato.html

I remember breadboarding it once, but can't recall how it sounded...

No!  Bad idea!  Repeat after me:  "Laurier's stuff doesn't work.  Laurier's stuff doesn't..."  Trust me.  His stuff doesn't work.  I tried quite a few of his projects.  Zilch on all of them.

[Uma Floresta]

Bump 

[johngreene]

Bump 

It would appear to me that the chip you have labled SAD??? is actually the 4013 clock generator. The 8 pin chip 'above' it is a SAD512D. It has one clock input on pin1 and the audio input on pin 6. Outputs are pins 3 and 4. That being said, it looks like the dry signal is being connected to the output through the .22uF cap in the upper right. The .1uF connects the input to the BBD and the .22uF connects it to the output through the 10K.

That would be my guess after just a couple of minutes of review. YMMV.

--john

[Uma Floresta]

Thank you! I never would have figured that out on my own. 

[Uma Floresta]

Well, that did it. Removed the .22 uF cap, and it became a vibrato. Thanks again! I'm just going to wire this up to a switch and have some fun. 

[johngreene]

Well, that did it. Removed the .22 uF cap, and it became a vibrato. Thanks again! I'm just going to wire this up to a switch and have some fun. 

Bah, it was a lucky guess. 

Have fun.

--john

[Uma Floresta]

The two extra knobs control the delay time - that's the trim pot set in the middle of the PCB. I used a 10k (stock value) and a 100k pot in series, for fine and course delay time control.

I'm really liking the vibrato out of this thing! Thanks once again to both John Greene and Mark Hammer!

[breather-resistor]

No!  Bad idea!  Repeat after me:  "Laurier's stuff doesn't work.  Laurier's stuff doesn't..."  Trust me.  His stuff doesn't work.  I tried quite a few of his projects.  Zilch on all of them.

I agree, I remember putting a considerable amount of time into the circuits on his page and finding that not ONE of them was functional.

I believe they fall into the too easy to be true category.  It's too bad really.  Strange that he describes in detail how they sound and work as if the schematics/layouts are totally confirmed and readily duplicated.

Oh well

[nordine]

I agree, I remember putting a considerable amount of time into the circuits on his page and finding that not ONE of them was functional.

I believe they fall into the too easy to be true category.  It's too bad really.  Strange that he describes in detail how they sound and work as if the schematics/layouts are totally confirmed and readily duplicated.

Oh well

However, his Attack/Decay circuit was mega simple, and just needed a fine tune (which i don't know how to do ) ...asked him for what was wrong on it, and told me to "wait till i find the original schematic" .. still waiting 

[Uma Floresta]

I thought I'd post some clips of the modified Electric Mistress... hope you enjoy:

Showing the difference between flanger and vibrato modes, keeping the other settings the same:
http://www.uncledig.com/clipgallery/Uma%20Floresta%20-%20The%20Beds%20Too%20Big%20flanger%20then%20vibrato.mp3

Slow vibrato:
http://www.uncledig.com/clipgallery/Uma%20Floresta%20-%20Everything%20In%20Its%20Right%20Place.mp3

Gradually increasing delay time until vibrato depth gets ridiculous - then something similar in flanger mode for comparison:
http://www.uncledig.com/clipgallery/Uma%20Floresta%20-%20Porcelina%20gradual%20depth%20increase.mp3