yesterday i look into
drop further the noise level.
as you can see in this picture the gab in the projector
room window is around 10 mm each side and noise from inside
. room comes "a bit" out
from this gab.
sitoation before was this.
i design and produce a strange looking sound cancel tubesystem
see here "some parts" of it.
this almost close the whole gab and at the front
of the 4 srews I will add a aperture that let ONLY
the beam out and cover all the rest.
that means the small gab that is still there (around 1-2mm only) will
be closed as well and it will looks more nice.
i try it and the sound level is with all this action
as good as if there was not any hole at all!
cant hear any difference now between a 100% closed
window (that I still have to try it) or this with the hole
with the sound protection.
also some more sound absorbers inside the pr
. room itself help
to get the nosie level down.
no question you still can hear all this huge fans.
2 x 600 cubic meter exaust air +1x 1200 cubic meter inside air and 2 huge
32000 lumen pr
. with two 6000 watt xenon lamps and the
cinema server the 4K 3D computer and more all this you can still hear outside
but good is that sound level is now much less than in the past with one single barco dp 2000 with inside and outside air system!
also I will add a filter slider after this new aperture
next week that
will have the Infitec 3D filter and other filters i will try in future
for 2D and 3D.
this will also make it very easy to switch between
2D and 3D and on top of this I will add some different
apertures that will kills
the light when I project a 2.35 format movie
the black bars on top and bottom as with my light gun
this is a improvement as less scattered light will hit the room.
I did the same with my DP 2000 and it was a good improvment
this time but now
as this pr
. have almost the double light it will be even more important.
also it will help to drop the light level for 2d as i cant dim enough
the light level with this 6000 watt xenon (min. is 4000 watt)
a bit high for 2d at least with a very new lamp.
also it is not to good for the lamp itself
to dim this huge xenon lamps at all.
if you dim very often between max. and min.(worst case!) this
huge xenon lamps will produce more flicker!
the beam cant burn into ONE place as it always move
form one place the beam select at max. light out to a other
place for min. light out.
this jumping will enlarge the filcker.
here a picture from the sound protection wise ready system
without the apature.
the 4 srews will get some more parts as above described next week.