{
 "digest": null,
 "links": {
  "fits": [],
  "members": [],
  "cases": [],
  "assemblies": []
 },
 "prints": [],
 "part": {
  "id": "gikfun-40mm-speaker",
  "name": "Gikfun 40mm 4-ohm 3W Full-Range Speaker",
  "kind": "",
  "method": "",
  "vendor": "gikfun",
  "sku": "",
  "model": "",
  "buy": [
   "https://www.amazon.com/s?k=gikfun+40mm+4+ohm+3w+speaker"
  ],
  "url": "",
  "category": "component",
  "owned_qty": 0
 },
 "facts": {
  "id": "gikfun-40mm-speaker",
  "name": "Gikfun 40mm 4-ohm 3W Full-Range Speaker",
  "vendor": "amazon",
  "url": null,
  "qty_owned": 2,
  "category": "component",
  "frame": "origin at cone-face center, face at Z=0 facing +Z, magnet -Z",
  "body": {
   "size_mm": [
    40.0,
    40.0,
    19.0
   ],
   "outline": "circle",
   "notes": "GRILLE: >= 25% open area over the cone; mount = front clamp ring on the 5mm rim or 3 tabs - frameless, no screw ears"
  },
  "mounting": {
   "holes": [],
   "pattern": "clamp ring over the dia 40 rim (print: ring ID 36 / OD 46, 3x M3 into bosses)",
   "notes": "magnet dia ~24 x 14 behind (typ.) - needs back-volume; sealed enclosure improves bass"
  },
  "electrical": {
   "notes": "4 ohm 3W; solder tabs on rim"
  },
  "cad": {
   "file": "amz-gikfun-40mm-speaker.step",
   "fidelity": "envelope",
   "source": "amz-gikfun-40mm-speaker.py",
   "verified": true
  },
  "sources": [
   {
    "facts": "dia 40, 4ohm 3W",
    "ref": "Amazon listing",
    "date": "2026-07-23"
   },
   {
    "facts": "depth, magnet, rim",
    "ref": "typ.",
    "date": "2026-07-23"
   }
  ],
  "confidence": "depth/magnet typ. - caliper before designing the back volume"
 },
 "models": [
  {
   "handle": "sarg",
   "fidelity": "envelope",
   "verified": true,
   "visibility": "public",
   "url": "/m/sarg/gikfun-40mm-speaker",
   "files": [
    "amz-gikfun-40mm-speaker.py",
    "amz-gikfun-40mm-speaker.step",
    "part.yaml"
   ]
  }
 ],
 "related": {
  "notes": {
   "exact": [],
   "chip": [],
   "addr": []
  },
  "parts": {
   "variants": [],
   "interface": [],
   "mounting": [],
   "cooccur": [],
   "owners": [],
   "addr": []
  }
 }
}