Press Fit Speaker Holder
The speaker ring part fits into the cutout on the BrainTube-Case part.
Fit the Speaker-Grill part into the Speaker-Cone part.
Add Raspberry Pi to Case
Place the Pi over the standoffs and align the board with the port openings on the case.
Solder the speaker wires to the JST female connector. Use heat shrink to insulate the connections
The front cover is fitted over the HAT with the speaker cable fitted through the slit on the HDMI port opening.
Add gaffers tape or kapton tape to insulate the speaker magnet. The Speaker press fits into the ring.
Align the speaker cone over the speaker wires and then press fit over the speaker.