Piggybacking Si TB MKII Verified!

[Ben Lyman]

EDIT:
Officially awesome-o-fized! No piggybacking required, sounds great as is. I did use a 100uF cap at the +9v instead of 47uF but I didn't change anything else.
Even with the high pass at the input it sounds sort of close to an original TB, thick and fuzzy with tons of sustain, sort of 1960's British. 

Thanks to Gus, I was able to find this after wading through the muck... ugh, no small task!
After reading the thread it seems there may or may not be some issues with it but I am going to give it a shot later tonight or tomorrow.
If anyone knows something about this that I should know before I start, please lemme know.
Thanks!
Schem:
http://www.diystompboxes.com/pedals/schems/NPN_Si_TB_Mk.%20II.pdf
The thread:
http://www.diystompboxes.com/smfforum/index.php?topic=18950.msg113017;topicseen#msg113017

[Kipper4]

Are you bread boarding it Ben?

[Ben Lyman]

Yes Kipper, sorry, to clarify "give it a shot later" I meant on the breadboard.

[Kipper4]

Just a few things I'd look at
putting a series 100ohm on the +9v.
A 4.7n to 47nf in parallel with the 47uf just to see if it improves noise reduction on the power supply. Bit more power filtering.

I'm not familiar with the circuit or its sound.
But while it's on the bb experiment with the input cap. 4.7uf
The 4.7uf and 100k form a high pass filter.
You can google how to work out the corner freqauncy of the filter.

Like I said take it with a pinch.
Rich

[Ben Lyman]

Thanks so much Rich, I will lay it out according to the scheme and then play around with those parts you mentioned. I pretty much always put a 100uF cap to ground from the +9v just because I was told to, but I have always wondered how different values affect the performance, if at all. I have a pile of electro caps from 22uF to 68uF that are never getting used.