video preview: https://youtu.be/pYZ0BqJoZ5o 
The S-30B speaker system is designed for high-quality reproduction of music or speech programs as part of a home radio amplifier system. The system features a speaker overload indicator. The panels are green.
Size: 36x21x20 cm.

Pivot on the floor, system units are centimeters.
faces: 14,560 mid-poly with a single smoothing group. Subdivision ready. 29,000 with OpenSubdiv 1 iterr.
The speakers and the grille are separate objects made of different materials.
On objects, one texture-set with non-overlapped UV and a universal metallic PBR material (suitable for any modern render engine),
4K PNG textures: BaseColor, Roughness, Metallic, Normal, Opacity.

*Vray 6.0, Corona 7.0 and later
*when importing from FBX, make sure input gamma=1.0 (linear/non-color) for all textures except base_color.