Car Audio Oval-to-Round Speaker Adapter (4x6, 5x7, 6x9 → 5.25 / 6.5 / 6.75)

*** Description ***

Parametric 3D-printable adapter for mounting round car speakers into factory oval openings.
-- Adapter plate mounts to vehicle or speaker adapter ring
-- Speaker mounts to the raised round boss
-- Designed for strength, printability, and real-world fit

*** Supports: ***
-- Vehicle openings: 4x6, 5x7, 6x9
-- Speakers: 5.25", 6.5", 6.75"

PETG / ASA / ABS recommended

No supports required

This model is parametric: Adjust sizes, hole spacing, and reinforcement in OpenSCAD as needed.

Enjoy!

All code written with assistance from ChatGPT