cot 50 values etc... help for a beginner needed ! thanks !

[odieux fonzie]

Hi,
I'm a complete newbie, but I succeded to build my first stompbox, a Cot 50 using this kit :
https://www.taydakits.com/instructions/cot50/pages/designators-and-components--16
It works ! But... It dosen't sound the same as the boost part of my Mosky Deluxe Preamp, who is supposed to be a Cot 50. For short, my pedal sounds darker, less volume, less gain. I looked at another schematic on internet here :
http://tagboardeffects.blogspot.com/2010/07/lovepedal-cot50.html
Some values and the number of parts looks different.
Also, on my kit (see first link) there is a part where "opt" is written. Does it mean that I can ovoid using this, and only put a jumper ?
Again, I'm really a beginner, so your help is most welcome. Thank you !!

[Digital Larry]

Hate to say it, but one thing about the DIY world that bugs me to no end is... NO SCHEMATIC.  That's the drawing that gives you some hope of understanding what the thing does.  I'm not blaming the OP.  I looked around on that site and they don't offer the schematic.

[TGP39]

Here is a schematic from Mr. Fred Briggs;

[antonis]

Also, on my kit (see first link) there is a part where "opt" is written. Does it mean that I can ovoid using this, and only put a jumper ?

It depends on the specific item placement..
e.g. in case 47nF optional cap is the one shunting clipping diodes, you can safely omit it but NOT jumper it..
(or else you'll short OUT to GND..)

There is some descrepancies between TAYDA BOM list & circuit posted by TGP39 (and also wrongly refered by Tayda 1N60 Ge diode as Schottkly one - probably due to similar forward voltage drop..)

IMHO, a more realistic circuit of your build should be as below:



and a rough guess about PCB tracks..
(NOT VERIFIED - you can easily check it, taking in mind some of resistors and caps (other than C3) legs connections could be reversed..)