I created the digital artworks for the documentation and website. For my first two prototype models,
however, I decided to do something a little different and go with an all black look. For the large
control knob I chose Thonk's MXR clones. For the medium sized ones I used original Davies
Molding's skirted 'bold small' knobs, also available from Thonk. For the small control knob I used
Thonk's Davies 1900H clones. The small 1900H knobs barely cover the pot nut and washer but the
overall effect is visually pleasing and the knobs are easy to adjust.
The first prototype unit using a printed Schaeffer panel. The nuts for the switches have not yet been fitted.
The switches used in this project are from the Gemini series from TE Connectivity. Other
manufacturers may have equivalents but I have not tried these. The TE part numbers are:
SPDT on-on
A101SYCQ04 or A101SYCB04
SPDT on-off-on
A103SYCQ04 or A103SYCB04
DPDT on-on
A201SYCQ04 or A201SYCB04
You'll notice that each switch type has two different part numbers. The part numbers differ only in
the third from last digit. B is a low voltage part while Q is a higher voltage part. For our application
either may be used, so simply buy the cheapest available.
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