Originally Posted by Carl
With MRC switched off, how would you describe the sound of your room Pre / Post room treatment?
With MRC switched off the sound is not so very different pre and post treatment. It is boomy with strong room modes at 25 and 50Hz that are clearly visible in the plots. I have not really gone for bass traps etc. so this is logical. All the treatment relates to making reflective surfaces a little softer or uneven.

However, post treatment, if I leave MRC on auto (371ms) or tighten the decay further, the bass becomes very thin and the overall sound level drops considerably possibly because the energy is being sucked out by deep filters. I end up listening on an average 10 points higher for the same perceived level. Also, the sound starts becoming very forward and almost shrill.

I have to bring the decay to 450ms and manually attenuate some of the filters (from -12dB to say -7dB) to make the sound reasonable.

Photos now uploaded Shankar - Media Room Layout

Thanks all,
Shankar

Oppo UDP-203, Sonos, Nvidia Streamer, Fire TV 4K, Trinnov Altitude32 into Dan D'Agostino Momentum into Wilson Alexx, Paradigm Sub 1, Monitor Audio In Wall surrounds, JVC NX9