Prior to construction of the room interior you can see the large window area I needed to manage. I have blocked these with MDF and filled the window cavity with insulation. I used white blockout material against the glass so it looks fine from outside. The blocked out windows and rear bass traps are visible in the below pics of the hushbox. I'm actually planning on replacing the MDF with heavy full length drapes to reclaim use of the windows.
I did not upload pics of my upholstered acoustic panels initially but here is a picture of the uncovered timber frame with insulation in place.
I have material to construct a set for the ceiling first reflection points but have yet to make them (deciding how long I'll be staying in this home).
In my interest to remove unwated noise I have constructed a hush-box for my projector. The flexy rack I built formed the base and I mounted it to the rack using the 4 vertical rods.
For airflow I am using 2x noctua 120mm DC fans which are operated by a relay; one at the projector intake and one at the exhaust point. The relay is powered by a 1.5A plug-pack (from jaycar) and switched by the 12v trigger on the projector.
I use the same setup in my equipment rack to run 2 fans when the AVR is powered on.
The relay I use is: http://www.ultrasmart.org/ they have a selection of self contained relays with back EMF protection etc. All you need to do is screw in the wires...
Pictures of the hush box: 
I have added a small Nettop and an LCD panel to my Rack for playing music.
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