Why do I have this very weird reflections?

Why are those real weird reflection on the edge of the the driver appear. I didn't use any kind of glossy or metallic material on it. How do I fix it? Thank you in advance I'll include blender file

• For what it’s worth, I’ve definitely seen speakers with a ring of glossier material in that position, on the edge of the mesh. Jan 25 at 4:55

1 Answer

In the material named Material.003 , you have a Principled BSDF node that has a Clearcoat value set to 1 and Clearcoat Roughness set to 0.03. This emulates a reflective layer on top of the normal Roughness value.