JBL Control 25 Invisiball ceiling mount bracket

JBL's ceiling mount plates for their Control 25 and 28 speakers are a little ugly, so I designed some nicer ones that work with their metric cone-shaped adapter. The hex hole on the back should fit standard M10 nuts; it's 17.5mm flat to flat, and the nuts I used are 16.8. The mounting bolts I used are 50mm stainless steel 5.5mm hex head self-tapping bolts. More info on my blog Designed in Autodesk Fusion, printed on Bambu P1S.