{
  "schema_version": 1,
  "date": "2026-10-18",
  "scope": "Scalar geometry and mounting references for the one fixed NeXT Sound Box mini; not an acoustic measurement or verified physical fit.",
  "source": {
    "file_name": "NeXT SoundBox Complete.step",
    "sha256": "6ac3b8240a66fe6c9bbe87d070da831e7b643430908557c2b8d6a0d6c30dcd20",
    "bytes": 9191619,
    "file_length_unit": "millimetre",
    "transfer_length_unit_mm": 1.0,
    "ocp_distribution": "8.0.1.1.0",
    "python": "3.12.13",
    "source_design_modified": false,
    "source_cad_published": false
  },
  "inventory": {
    "solid_count": 4,
    "valid_solid_count": 4,
    "named_empty_entry": "NeXT Logo Plate.step / Project",
    "reference_driver_cad_label": "TEBM28C10-4B",
    "owner_driver_identity": "Tectonic Elements TEBM28C10-4",
    "supplied_datasheet_identity": "TEBM28C10-4/A",
    "physical_revision_correspondence_verified": false
  },
  "coordinate_system": {
    "world_axes": [
      "X",
      "Y",
      "Z"
    ],
    "baffle_axes_in_world": [
      [
        1,
        0,
        0
      ],
      [
        0,
        0.7071067811865476,
        0.7071067811865476
      ],
      [
        0,
        -0.7071067811865476,
        0.7071067811865476
      ]
    ],
    "baffle_transform_is_rigid": true,
    "coordinates_unit": "mm"
  },
  "mounting": {
    "origin": "derived",
    "reference_rear_grille_face_baffle_coordinate_mm": 30.126120090029307,
    "sound_aperture_diameter_mm": 40.0,
    "circular_frame_recess_diameter_mm": 57.0,
    "pilot_hole_diameter_mm": 1.5,
    "pilot_centers_baffle_uv_mm": [
      [
        -16.970562748,
        17.51298791565824
      ],
      [
        16.966512756,
        17.50893888929309
      ],
      [
        16.970562748,
        51.45411341261252
      ],
      [
        -16.974611775,
        51.45006342033951
      ]
    ],
    "pilot_pattern_center_uv_mm": [
      -0.0020247547499998575,
      34.48152590947584
    ],
    "pilot_pitch_circle_mean_diameter_mm": 47.99999948746419,
    "reference_driver_clearance_hole_diameter_mm": 3.3,
    "reference_driver_hole_centers_baffle_uv_mm": [
      [
        -16.989504835,
        51.40298828913493
      ],
      [
        16.951620662,
        17.461862792180654
      ],
      [
        16.951620662,
        51.40298828913493
      ],
      [
        -16.989504835,
        17.461862792180654
      ]
    ],
    "reference_driver_total_axial_extent_mm": 25.770000201253257,
    "reference_driver_rear_depth_from_grille_face_mm": 24.32004300871475,
    "reference_driver_front_protrusion_from_grille_face_mm": 1.4499571925385055,
    "reference_driver_to_housing_minimum_distance_mm": 0.5087985842201377,
    "reference_driver_housing_intersection_mm3": 0,
    "grille_housing_intersection_mm3": 0.014178527189564676,
    "eligibility": "Full-range only. Opening, frame/recess, mounting, depth-dependent body clearance, terminals, and unmodeled assembly clearances must all be checked. Nominal size or a single depth alone cannot qualify a driver.",
    "manufacturing_tolerance_qualified": false
  },
  "air_region": {
    "origin": "derived",
    "cad_has_closed_speaker_rear_air_component": false,
    "finite_cad_voids_mm3": [
      13.23654586084443,
      0.002875915489057847,
      0.0028759186358494537,
      0.0028759102364660895,
      0.0028759086598515006
    ],
    "reference_domain": "Triangular prism bounded by the measured inner side planes X=+/-40.25 mm, floor Z=3 mm, back Y=29.15 mm, and the virtual front closure at the identified rear grille face. Subtract all four modeled solids; select the connected component containing world point (0,15,15) mm.",
    "virtual_front_closure": true,
    "without_reference_driver_liters": 0.1823254109382222,
    "with_reference_driver_liters": 0.16473134088686947,
    "main_component_difference_mm3": 17594.070051352726,
    "alternate_front_domain": {
      "definition": "Same domain planes with front closure moved to the maximum axial extent of the reference driver.",
      "front_baffle_coordinate_mm": 31.576077282567812,
      "with_reference_driver_liters": 0.17234295167069508,
      "difference_liters": 0.0076116107838255995,
      "is_physical_uncertainty_bound": false
    },
    "remaining_component_displacement_liters": null,
    "leakage_impedance": null,
    "acoustic_topology": "The as-supplied CAD rear air communicates with the exterior; a physically sealed box or tuned vent is not established.",
    "profile_use": "Geometric reference with explicit virtual closure, unknown remaining displacement, and unknown leakage. Do not publish as a qualified sealed net acoustic volume."
  },
  "verification": {
    "closed_fixture_void_volumes_mm3": [
      511999.9999999999,
      727999.9999999998
    ],
    "open_fixture_connected_voids": 1,
    "known_overlap_fixture_mm3": 500,
    "disjoint_fixture_mm3": 0,
    "material_volumes_invariant_under_baffle_rotation": true,
    "native_gui_or_board_operations": false
  },
  "limits": [
    "Named empty and generic CAD entries do not establish that every physical component is represented.",
    "The remaining displacement of electronics, connectors, wires, gaskets, and damping has no supplied placed-solid inventory.",
    "A virtual closure defines a repeatable reference region; it does not close physical openings or determine their acoustic impedance.",
    "The alternate front domain is a geometric sensitivity result, not a confidence interval.",
    "Physical printing tolerances, assembly seal, and exact driver revision are not measured."
  ]
}