prescription electronics COB volume

[peterg]

I've built the above mention circuit base on the attached schematic. http://www.google.com/search?tbm=isch&source=mog&hl=en&gl=us&client=ms-rim&tab=wi&q=prescription%20cob%20schematic&sa=N#

Its a great effect but the volume at max is only slightly higher than bypass no matter what the setting is. What can I do to increase it?

[Mark Hammer]

You might consider using Schottky diodes for the rectifying pair near the output, and you might consider using a 250k volume pot.  That won't produce a big difference in volume, but it should give you a little more.

[ch1naski]

Maybe add a simple clean boost circuit to it...tho I know that's not a real fix.
I built one and had the same issue.