{
 "object": "loudspeaker-envelope-40mm",
 "license": "CC BY 4.0, Xem Studio",
 "les": "https://longearthsociety.com/engineering/",
 "files": [
  {
   "name": "speaker-envelope-40mm",
   "step": "/files/hardware/loudspeaker-envelope-40mm/speaker-envelope-40mm.step",
   "stl": "/files/hardware/loudspeaker-envelope-40mm/speaker-envelope-40mm.stl",
   "note": "40 mm loudspeaker envelope: front rim Ø40 × 3 (cone side at z = 0), Ø34 × 4, basket Ø28 × 10, magnet Ø20 × 8; 25 overall"
  }
 ]
}