kokbox box of metal, slightly gatey /farty

[njkmonty]

hi just done the box of metal and dr boogey at the same time, both work first go, adjusted trim pots accordingly on dr boogey, sounds great,
did the box of metal (without noise gate)
sounds good, but not great , and sounds a little farty/gated at times
i notice it sort of similar to the boogey one uses trim pots and the other fixed resistors for the power to bs170s.
my question is would slighty changing the values for example , r4,r10,r14,r18,r21, help ? up or down?
what would the ideal voltage going to those legs?
Im using a well regulated 9v supply which is quite close to the 9vs too!




http://www.madbeanpedals.com/projects/Kokbox/docs/Kokbox_ver.3.5.pdf

[njkmonty]

any goers???

[crane]

Hello there!
I have built Kokbox as well - and it sounded rubbish. Well - may be I need to play with some values but the stock one was pretty bad. Now I see that I'm not the only one with this problem.
I have 2 guesses -
1)Z.Vex uses selected transistors (on the other hand - Box of rock pedal worked great first time I fired it up)
2)Madbeans has an error in his schematics

Unfortunatly the layout is so tight that it is really hard to add trimpots like dr boogey has. I remember checking the signal after each stage on kokbox with an audio probe - I think it went bad after eq section. But I'm not 100% sure as it was a long time ago - I  have too much stuff to do, so kokbox is left aside.

[njkmonty]

Ive had a look around on a few forums, and "farty" appears to be common complaint.

Ive replaced all 5k1 resistors with sip sockets going into the bs170's.

will play around with different values and report back of any improvement. Im very confident i built it correctly it did sound
what it is suppose to do , but felt it needs to be possibly biased better , so i have the same feeling as the Dr Boogey, which is
a genuine like to use it!
I have a slo 100 clone amp, and so far it is the closet sounding pedal to the lead channel, with drive (preamp) on high "7"