Help troubleshooting Colorsound Overdriver

Started by mrsuspend, January 14, 2011, 06:18:34 PM

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mrsuspend

Hello All,

I just finished building the veroboard version of the colorsound overdriver :
http://www.aronnelson.com/gallery/main.php?g2_view=core.DownloadItem&g2_itemId=4936&g2_serialNumber=2
and apart from me initially (and stupidly!) wiring the input one strip lower than where it was supposed to go it now seems to work. The volume behaves as expected and the gain does nothing until it reaches 85% and then quickly saturates... which I've come to understand to be quite normal with this pedal.  :D
There seems to be something wrong with the tone controls though, the bass doesn't do anything audible and the treble is kind of feeble sounding... If somebody could give me some readings from a working tone stack it'd be a tremendous help!

My transistor values: (BC109s, hfe around 130)

Q1 c 1.59 b 0.91 e 0.38
Q2 c 4.95 b 1.59 e 0.97
Q3 c 5.06 b 1.46 e 0.86


Thanks!
/Magnus

mrsuspend

EDIT: Those hfes should be 330, not 130. Doh!