Very small Basement room with concrete outer walls. Ceiling is made of acoustic plates Ecophon Focus-C. The walls are covered by huntonit plates (a kind of mdf) and they are about 10-15 cm thick on top of the concrete with 7,5 cm Glava isolation. The concrete floor is covered by Berry Alloc plates.
Size about 3,65m X 4,4m. Height only 2,07 m.
Mainly used for stereo listening, but it also contains home cinema equipment.
Equipment use for stereo: Hegel H160 integrated, Audiovector S3 Avantgarde, Sunfire HRS-12, Source is usually Airplay built in to the Hegel streamed from a Macbook Pro or streaming from Tidal.
Home Cinema equipment: Marantz SR6010, Samsung UBD-K8500, Audiovector C-series as surround speakers, Monitor Audio C256-IDC as atmos speakers built into the ceiling.
Samsung LCD 70"
I have used some acoustic plates to reduce the first reflection from the main speakers. I used the mirror method to find the placement of those. I have not yet done anything with the second reflection because I'm not sure if it would be good for the sound. I will try to figure out more of the necessary treatment by using the REW.
I have tested with some big temporary Base traps in the back corners of the room. I can't say that I heard any difference.