BSIB 2 cap question

[Pierre]

Hi !!!
im just putting together a BSIB 2, but i dont have this 250 pf cap...can i replace it with a 220pf or a 270 pf ?
I'll wait four an answer to continue 
Thank you !!!!

[DuncanM]

Short answer - YES,

it's there to eliminate RF other high frequency nastiness, either 270pF or 220pF should acceptable.

PS. Is your tone pot 100k Log or 100k Lin?

[Pierre]

ok !!! thank you !...but to be honest, i could not wait and i decided to put a 220 pf (film)...As for the pot, i used a 100k Log...
I just finished the effect 15 min. ago, so i cant give a definitive opinion...but it works, and i like it very much !!! Im going to experiment a little with fets and see (hear) if there's signifficant changes in the tone...
Thank you !!!

[DuncanM]

OK there is some confusion about the tone pot - it SHOULD be 100k LIN - there was a typo error on the List of Materials at GGG which has now been corrected. The schematic always said that  the pot should be Linear.
You'll find that a log pot will have a very small usable region.

Enjoy.

[Pierre]

yeah ! you are right and i thank you very much !...i was just wondering wy the tone pot was only usefull just in the last 1/4 portion...
Now im just checking the voltages, they are not exactly the same as GGG's chart, some are a little higher and some lower 
im powering it with a 9.5V regulated PS (  Ultra Clean PS)...but it sounds pretty good to my ears...and even pushing it with a TS clone...