Acoustic system set for home theater S-Series by Miller&Kreisel. The set includes models S300, S300T Tripole, MP300 On-Wall, X12+ Subwoofer. With the corona select map, you can quickly change the color of the enclosures and protective grilles to white.
https://www.mksound.com/products/x-plus-series/x12-plus/ 
https://www.mksound.com/products/300-series/s300t/ 
https://www.mksound.com/products/300-series/s300/ 
https://www.mksound.com/products/300-series/mp300/ 
For Corona render, it is recommended to use version 1.5 or higher, as the glossiness of materials is set considering PBR.