Yup. The volume needs to be about maxed for me with the gain all the way down. It's below unity with my Suhr's high output bridge no matter what.kbibs wrote:I have a question fr anyone that has one of these. With the gain turned down all the way, where about on the volume knob do you get unity volume? ... with my breadboard build and a few different cap values I'm about at max volume before unity. Is this about right?
The 22n cap highlighted is a Panasonic labeled 223 so that's definitely 22n. The 10n is a yellow one marked .001k on one line and 100k on the next, these I'm not sure about at all and the 2n2 one to ground at input is one of these. The 470k resistor is yellow-violet-yellow-gold and it's the big carbon comp. The 330p cap is a blue multilayer ceramic marked 331. The cap from output to ground is a Panasonic labeled 103 so that's definitely 10n.roseblood11 wrote:The drive pot and the last transistor stage are different as well.
I still doubt that the marked parts are correct. The cap from input to ground is most likely 220pF.
But there are too many things unclear. I think we need better pictures or a look at a different pedal.
@mmolteratx:
- Could you please recheck the parts values (at least those of the marked parts) and maybe post the codes on the caps?
- Are the connections around the 330pF cap really correct?
- Is the cap from output to gnd really 10nF?
The 2n2 at the input is labeled .0022k on one line and 100k on the next. The source cap off of what's labeled Q3 in the schem should be 22uF.
The styrene caps are the 100pF cap across the gain pot and the 470p to V+. One lead of the 470p goes to the 22uF/680nF filter caps and the other goes to the + lead of the 220n electro and the source of what's labeled Q4 on the schematic. It's labeled 470J.
The 390R source resistors are orange-white-brown-gold.
If the .001k is actually a 100pF and the -0022k is actually a 220pF, the values make perfect sense. I dunno as I've never used these types of caps before. They look like Nichicon films with different codes.
I'll get some pics when the light is better tomorrow and after I manage to finish a paper and get some Calc done.