OmniRat v1.0
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6
Off board wiring
Potentiometers
In the pictures below you see the correct pin numbering of the pots (Alpha 16mm style).
Solder the wires accordingly and it is always a good idea to twist the wires together to create some
extra shielding against external noise. The
rectangle pad
marks
pin 1
.
You can break off the pin I marked with the yellow circle with a small pair of pliers.
Note that the Tone/Filter pot is wired different on early RATs vs later RATs. So there is no actual right
or wrong way to wire it. If you do not like the orientation in this version you can reverse the PCB
mounted pot or use a reverse wired Alpha pot with solder lugs (like in the picture above).
Diode Switch
The wiring for the switch is the same as for potentiometers, marking pin 1 with a
rectangle pad
.
There is no wrong way to wire it as long as the pad of pin 2 is connected to the middle lug of the
SPDT switch.
The optional diode switch (
SW1
) enables you to switch between 2 sets of diodes. You could choose
to equip
D1
and
D2
with the correct set of diodes per your chosen configuration and use
D3
and
D4
to experiment with your own configuration. As the 1N4148 and 1N914 are almost identical, I suggest
you use 3 mm LEDs for
D3
and
D4
, but of course you are free to choose different. D1 and D2 are
designed to fit almost all types of diodes, but D3 and D4 are designed for LEDs. If you want to use
other diodes in those positions, you will have to mount them upright.
VR1
is a so called Warp control as
by AMZfx. This control is used to change the harmonic
content of the clipped output from primarily odd harmonics to a mixture of even and odd harmonics.
If you do not want to use it you can leave it out and connect pin 1 to pin 2 with a jumper.
3 2 1
