Dimension: XYZ, in cm. (Z being height)
Geometry:
(*) if triangulated.
4K textures, PBR metal workflow:
Texture space: 96.2 Mo
Texture embedded in the blend file.
4 Texture set: Each speakers having their own UV map, use the texture on the corresponding speakers in your PBR workflow. Those are arranged correctly in the texture file, and named efficiently.
Scale based on a real life product. Rendered using Blender Cycle 2.8. Scene and HDRI not contained in the file.
Contact me if you have any problems with the files. Enjoy !