Less bass Dunlop Band of Gypsys fuzz

[third stone]

Hello,
I'm a newbie. In the past I have built a few fuzz faces, a couple actually worked! Anyway I have this Dunlop BOG fuzz which I know isn't really a "fuzz face" but has a decent sound.
My knowledge is fairly limited but I assume if I'd like to get a little less low end woolliness I could try a different input cap. Can anyone point out the input cap on this thing? THANKS for the help!

[Ben Lyman]

I don't know how accurate these schematics are but I found this one:
http://www.tdpri.com/attachments/image-3067854490-jpg.275435/

It bears a striking resemblance to the Roger Mayer Octavia:
http://fuzzcentral.ssguitar.com/schematics/mayeroctaviaschem.gif

Maybe try to locate the 100nF (C3?) input cap on yours (your pic is too small for me) and replace it with a 10nF like the Octavia has.
However, my suspicion is that it won't really change much, maybe you should wait for a more expert opinion 

[John Lyons]

The output cap C7 in the second schematic would be
the best way to lower the low end and keep the same
overall sound (with less low end). Try .047 or lower.
Lowering the input cap will change the low end but also
change other characteristics of the circuit.
In the Octavia schematic the last cap which is .1uf could be
changed to .047 or less which would cut some low end.
See what the output cap is in your pedal and make it smaller
either way to cut low end and not alter the other characteristics
of the circuit.

[Ben Lyman]

Ah yes, John, that makes more sense. Since you mentioned C7, I went looking for it and noticed there is also a couple RC networks back to back after C7.
Are these two low pass filters in a row? Could more high end be goosed from this pedal simply by cutting one or both resistors? Put 'em on a switch maybe?

[John Lyons]

It doesn't look like much of the
treble is bled off with those high
pass filters but you could break the
connection of the two caps to ground
with a switch to get the full treble signal
back.
I'd try it first before commiting to a switch.
If you make the 1Ka pot about 10k or more
you will have a tone knob with much more
cut available. Or make the 1k 10k and use
a switch....

[third stone]

Thanks for the help. I'll mess w a lower output cap value first.