freestompboxes.org

Goals, I will start building this

bajaman wrote: ↑08 Oct 2017, 04:24 I also increased the first phase shift capacitor to .022uf (was .015uf) to maintain the same response with the changed 150k bias resistor - now 100k.
After performing the mods I tried the pedal and feel it has a far clearer smoother sound than it had with the original component values. All the stages now have maximum voltage gain headroom for running from an 8v dc supply rail.
cheers
bajaman
voodoo vibe 1.bmpvoodoo vibe page 1.png

Hey, Baja! Going to be finishing one of these up soon and am incorporating your mods. I just wanted to clarify that the last couple phase filter caps were left stock instead of your earlier preferred values. I am doing a switch mod with yours, brejna's and univibe values. As always, thanks for your contributions and time.

I've had this one for a while, was working perfectly but now i get low output and the effect drops volume when engaged, bypass works, the Chorus/Vib/Trem modes all work but the sound has a very loud bass thump to it.

I've attached a schematic i've found, I suspect the first Transistor because the LFOs all work and the leds behave normally, anything other i need to check just in case ?

I've tried replacing the bc559 also, but to no avail, also replaced the 3 100uf 16v electros and diodes also, same problem... any ideas as to how to troubleshoot this?