{
 "object": "thermoacoustic-driver-cap",
 "license": "CC BY 4.0, Xem Studio",
 "les": "https://longearthsociety.com/engineering/",
 "files": [
  {
   "name": "driver-cap-1.5in-40mm-speaker",
   "step": "/files/hardware/thermoacoustic-stacks-and-resonators/driver-cap-1.5in-40mm-speaker.step",
   "stl": "/files/hardware/thermoacoustic-stacks-and-resonators/driver-cap-1.5in-40mm-speaker.stl",
   "note": "1.5 in ISO 2852 cap with a Ø40 × 6 socket (floor 10.5 above the face) for a 40 mm speaker, Ø28 port through to the bore (thermoacoustic refrigerator driver / engine load)"
  },
  {
   "name": "driver-cap-2in-40mm-speaker",
   "step": "/files/hardware/thermoacoustic-stacks-and-resonators/driver-cap-2in-40mm-speaker.step",
   "stl": "/files/hardware/thermoacoustic-stacks-and-resonators/driver-cap-2in-40mm-speaker.stl",
   "note": "2 in ISO 2852 cap with a Ø40 × 6 socket (floor 8 above the face) for a 40 mm speaker, Ø28 port through to the bore (thermoacoustic refrigerator driver / engine load)"
  },
  {
   "name": "driver-cap-3in-40mm-speaker",
   "step": "/files/hardware/thermoacoustic-stacks-and-resonators/driver-cap-3in-40mm-speaker.step",
   "stl": "/files/hardware/thermoacoustic-stacks-and-resonators/driver-cap-3in-40mm-speaker.stl",
   "note": "3 in ISO 2852 cap with a Ø40 × 6 socket (floor 8 above the face) for a 40 mm speaker, Ø28 port through to the bore (thermoacoustic refrigerator driver / engine load)"
  }
 ]
}