CLIPPING SELECTION SWITCH
There are two sets of pads to select extra
clipping diodes if you want some variation in
your pedal.
SW1
(vertical) is placed to sit
neatly in the middle of your knobs on a 3-pot
build.
SW2
(horizontal) works for a 4-pot
version. The jumpers shown on the previous
page will bring diodes D4-5 into the mix. If
you prefer to use the larger spaces (D3-D6)
for a single clipping configuration you can
jumper the opposite pads.
To incorporate an alternative clipping section
on the Q3 gain stage, select some suitable
diodes for D3-D6. There are no rules. Google
is your friend. Socket and experiment.
Add a SPDT ON-ON toggle switch in SW1 or
SW2 to select between the two sets of
clipping (D4-D5 / D3-D6).
If you want to get really freaky you can use a
SPDT ON-OFF-ON switch which will remove
the clipping from that gain stage altogether.
There’ll be a big volume jump with the switch
in the middle position though, so use
caution.
ALTERNATIVE TONE SECTION
We’ve incorporated parts so you can easily
modify the tone stack and add a mids
control. We’ve stuck to the simple elegance
of the AMZ Presence Control.
You can experiment with your own values,
but these two set-ups offer some great tonal
variation. For more info take a look at this
very informative page:
http://www.muzique.com/lab/tone3.htm
AMZ Control #1
R18
3K3
R19
39K
C10
12n (10n will be fine)
C11
10n
SHIFT
25KB
TONE
100KB
AMZ Control #2
R18
3K3
R19
470K
C10
15n
C11
1n5
SHIFT
25KB
TONE
250KA
Notes
