Univibe R49

[yeeshkul]

Guys was the resistor marked R49 in Neovibe scheme 4k7 or 47k in the original units? Is it supposed to change the depth? I tried 4k7, 10k and 47k and didn't notice much change (if any).

http://geofex.com/FX_images/vibeschm.pdf

[evostars]

R49 does not fix the depth.
its the pot called DEPTH under the r49 . its a 50k linear to ground...

I'm building my own neovibe in the next days.
I'm looking for LDR info, somebody got a link for me?

[yeeshkul]

Well, there is for sure a depth pot usually marked "depth" that loads the LFO and works like a depth control. The R49 although, apart from loading the LFO, is at the input of the bulb driver stage that has a feedback resistor, so i suppose it may have impact on the gain - lamp light - character/depth.

[RedHouse]

In the original univibe that resistor (R49 in RG's schematic) is a 4k7 resistor.

The 47k was an internet error that crept in over the years on peoples schem's.

[yeeshkul]

Thanks Brad!

[Thomeeque]

UniVibe_LFO.asc

For those interested T.

[yeeshkul]

Well done T.