YESSSS!
Ok, so after 4 days of soldering witness the new version of “Diskokugel” with speakers attached. I am quite satisfied with the looks.

out now: 0.2beta
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The longer you look, the more patterns you'll find...

The wireframe. With the the background cancelled out it's more comprehensible.
Doing all the soldering I had plenty of time to contemplate on the design so far:
The wireframe has quite a few disadvantages considering the further construction. It is not very exact, not very stable and I haven’t figured out a way to construct and attach proper enclosures for the individual speakers to prevent the acoustic cancelation of lower frequencies.
I could fill the whole thing with polyurethane foam and carve it out like a pumpkin, but that’s not what I’d call elegant. So I am considering to somehow build the thing on a plastic basis. Cast it, mill it with a cnc-mill, whatever…
Anyway, I will leave this problem be for now and rather start working with the existing model. That means:
– get an Arduino
– connect it to the existing circuit and PD
– put it all into the ball and check out what it can do
All that in probably two weeks, because now I need a vacation from it all.