Hello sash ! Thankyou for your compliments ...
My father (passed away) is a owner of 2 theaters, we 3 (2 older brothers) now we split our properties and one theater is running in common, in earlier days I used look after them, so the interest grown that way i guess.
So I planned a mini theater setup during my house construction itself, after 3 years i worked on the interior now and converted the shed in the terrace to HT.
Audio reg I auditioned Polk,Magnet,Warfedale etc and I preferred Klipsch F-30 & sw-450 sub with my Denon 1911. & Video reg I got preview of optoma HD 21 in my place for 3 days and tried different sizes on the wall and finalized 13' x 6'.9'' as the screen size which is also very good projector, but i ended up with Pana 4000 because of its features with remote no need to go to the proj every time the ratio of the movie changes.
and i bought the proj before construction itself and i almost watched different movies around 100 hrs on the plain wall and i decided to construct a curved wall sply for the screen, i think it is excellent enough for me with the dull white painted wall itself, even though i saw many demo rooms and my friends HT with high gain screen and many forum members suggesting the screens.
Reg the acoustic for concrete walls i cant find again the site where i got the detailed drawing i will try again to get the link. As you can see in the photos i split the walls by 2' x 2' with 3.6 inches of plywood and i pasted 0.6 " of thermocool on the wall to prevent heat from the wall and leave 1'' space between thermocool and 2" rigid glass wool from TWIGA and closed the wall with 8mm plywood, over that a 4' x 2' chip boards of 8mm with 6mm foam covered by jute fabric pannels nailed on the plywood.
Here in my HT iam also getting a pungent smell for almost 3 months now , i think it is slowly reducing i think it is from the varnish used for the wood combined with plywoods anti bug treatment chemicals.
Thankyou...