Older Firmware for Expert Pro CI

[audio_engr]

Thank you @Hifi_swlon, @Devialetuser, @thumb5, @Rufus McDufus, @Confused and @David A for your suggestions & recommendations. 

I have a very funny room, please see below prior to any treatments &/or audio in the room ... 

Bare room in the basement  

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Same room with dimensions in Feet.
NOTE : You notice the ceiling is lower for almost 1/3 of the room & then becomes higher for 2/3 of the room.

[img][/img]


Having consulted 4 of the very well known acoustic companies, everyone unanimously agreed that my Front wall should be the one with the lower ceiling height, setup my speaker along the Front Wall with the speaker's baffle approx. 3.5 Feet out and my Listening Seat approx. 10 to 12 Feet from the Front Wall. Thereafter, the usual room acoustic treatments etc. Of course, you are seeing these pictures without the room being enclosed that I have upon building a drywall with a door that forms the Left Sidewall from my Listening seat. 

I have been toying with the correct speaker placement for over 2 months now and realised there's a bass suck out from 50Hz ~ 150Hz and this had been bugging me constantly ... It became even more apparent after incorporating the PS Audio Regenerator. I had almost given up and looked at trying older Devialet Firmwares if that would help. I even considered toying with the DSP in Roon to see if the bass can be restored. 

As a last try, I called Bowers & Wilkins UK Factory yesterday and spoke of my issues with an eminent person there with great knowledge & loads of practical experience with their 800-series loudspeakers. I moment I sent him the 2 pictures above by email, immediately 10 minutes later on the phone, he said "Reverse the room setup and place the speakers on the wall behind the earlier Listening Chair and similarly the chair goes back where the speakers were earlier but under the low ceiling .. just out of the low ceiling portion and into the higher ceiling. Pull the speakers from now the "New Front Wall" by 5.0 Feet and toe-in of not more that 20 degrees.     

I incorporated the above suggested switch of the entire placement 2 hours back AND ... man! absolute nirvana !!!  I have not heard my system sound sooooo good ever !!!  Now I need to pull off several acoustic panels that B&W feel not required as it robs the life of the room ... 

Am onto the next thing which is to pull of the bass traps first and replace the corners with trees ...

The Devialet FW is 13.0.0 with DOS 2.2.2 and its great. SAM is ON and also at 100%. 

Wow !!! What a new learning ...