The parts:
Old wood,
Sonic Emotion Absolute 3D Sound,
The history of the |Balken|:
Out of 100 years old wooden plates from a old farmers house.
Cutting and adding MDF as a solid construction.
Clean the wood and cut the sides.
Glue it together.
Assemble it.
Acoustic measurements.
Sound tuning and packing the electronics into the box.
Done.