[sdiy] DIY patch matrix idea

[Vladimir Pantelic]

On May 21, 2016 5:13 AM, "Oren Leavitt" <obl64 at ix.netcom.com> wrote:
>
> With sources of ready-made patch matrix solutions being scarce, I have
been mulling over ideas for a DIY patch matrix.
>
> I am thinking of using 2.5mm or 3.5mm stereo TRS mini phone jacks
arranged in a matrix. These can purchased in bulk for reasonable prices.
The tips would be wired as "columns" connecting to a source. The rings
wired as "rows" connecting to a summing node input.
>
> The plugs would house a standard 100K resistor wired from the tip
(source) to the ring (summing node input). Additional "special" plugs can
be fitted with smaller or larger resistors for added gain or attenuation,
or an AC coupling capacitor.
>
> These jacks could even be used as "inserts" for an external signal
processor between source and input.

been there, done that:
https://www.muffwiggler.com/forum/viewtopic.php?p=1805862#1805862
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