Neovibe Mod

[fretbuzz2003]

Does anyone know how to increase the speed of the Neovibe? At full speed mine is vibing about 2 vibes per second.

[RDV]

I haven't built it yet, but was planning to. Did you do any subbing? Which layout? R.G.'s?

Regards

RDV

[fretbuzz2003]

If I had to do it over again I would build the Easyvibe. The Neovibe has been a month long headache for me.

I used R.G.'s layout, and I added the input buffer per R.G.'s Technology of the Univibe article.

[Chico]

I just built a vibe (using my own layout) It was based upon the Neovibe and the vibe artile at JC's site, but the oscillator is straight from the Neovibe article.

I think that if you are getting only 2 vibes per second at max speed, something is wrong.  Recheck your values as mine has a nice range of speeds.

One mod worth checking out was discovered by JC.  It turns out that the old Shin-ei vibes had different cap values than the original Dynacord.

I replaced my caps with JC's suggested alternatives, and my vibe opened up nicely.

Right now it is my favorite build.

Anyone build both?

[RDV]

Oh, I got them mixed up :roll:
The easyvibe is the one I want to try, mostly cause it'll work @ 9v.
I think perhaps you're limited to how fast a bulb will light up and die down.
I'll still have a look.

RDV

[Jose]

Try lowering the value of the 4.7k (2.2k maybe good) resistors feeding the speed pot. That should speed it up. Joe

[zolee]

hi,

I put variable resistors before the speed pot. This way I could fine tune the vibe. I also put variable resistors (trimmers) at the mixing stage, so that I could set a right proportion of the dry and wet signals. Changing the transistors in the lfo also might change the speed. I suggest that you use sockets for them for easy swap.

[fretbuzz2003]

I replaced the 4.7k resistors before the speed pot with 2.4k resistors. That did the trick! Thanks!