"Black" Theater Improvment Thread (Once you go black you never go back?) - Page 43 - AVS Forum
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post #1261 of 1275 Old 10-26-2014, 06:05 PM
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opps
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post #1262 of 1275 Old 10-26-2014, 06:31 PM
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Awesome job! That's dedication. But what a pay-off.

Btw,...

Quote:
Originally Posted by AdamAttewell View Post

So in 10 minutes my living room goes from this:


To this:
My room goes from a bright room into a black velvet box...

...in about 20 seconds.


That's the benefit of curtains, that I often write about.

Info in case interested:

Rich H's Variable Image Size Home Theater - Build Thread - Completed!
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post #1263 of 1275 Old 10-26-2014, 07:45 PM
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Thanks for the clarification Adam. Yes, that all makes sense now.
Great work and very inspiring.
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post #1264 of 1275 Old 10-27-2014, 03:04 AM
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Looks like you have been very busy harkness.

I like your idea of curtains but I can't hide the tracks in my room.

I am guessing you have a pelmet running the entire length of your room?
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post #1265 of 1275 Old 10-27-2014, 07:23 PM
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Quote:
Originally Posted by AdamAttewell View Post
Looks like you have been very busy harkness.

I like your idea of curtains but I can't hide the tracks in my room.

I am guessing you have a pelmet running the entire length of your room?
I'm not good with building terms, but whatever it's called, we built down a portion of the ceiling to be covered with
fabric both for light bounce rejection, sound absorption, and to contain the pot lights. We left space between the perimeter of the build-down and the existing walls. It's one of the best design decisions we made as I've been able to hid all manner of curtain tracks and other mechanical stuff up there, keeping everything neat looking.
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post #1266 of 1275 Old 10-28-2014, 04:19 AM
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Quote:
Originally Posted by R Harkness View Post
My room goes from a bright room into a black velvet box...
...in about 20 seconds.

That's the benefit of curtains, that I often write about.

Info in case interested:
Rich H's Variable Image Size Home Theater - Build Thread - Completed!
Reading your build was the final big push that made me go black and fabric..and want room-tracking curtains (which I ended up not finding proper supplies for, so fell a ways short).

I hope to inch closer to that fast-switch, no compromises situation at some point.
Has anyone found a fast-change way to darken/lighten the ceiling, similar to the curtained walls (maybe on a thread page that I missed)?

Simple <$250 dedicated black-fabric theater room, build in a day, takedown in an hour.
Easy $25-40 DIY black/dark-grey ambient-light rejecting screen, grab two things from a local store..mix..roll..done.
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post #1267 of 1275 Old 11-02-2014, 03:02 PM
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How black is your room

For all of those with a "bat cave", here is a test for you.

1) Zoom your 16:9 projector to be 10% smaller than your screen (so that the left hand side of the screen is not illuminated by the projector).

2) using a calibration disk, put up a window at 100% full white.

3) Measure the brightness of the 100% white. coming off the screen, and measure the light coming off the 10% left hand portion of the screen. This portion of the screen is only lit by reflected light.

4) What is the ratio of the 100% window to the un-illumunated screen.

Note: you may find it difficult to make this measurement, as the light level on the unlit portion of the screen is very low. One way to do this is to take a picture (using an SLR in manual mode, raw picture), making sure not to saturate the picture.

Then use software that reads the pixels in raw linear format (e.g. IRIS free software http://www.astrosurf.com/buil/us/iris/iris.htm ). Convert the Bayer raw pixel values into a 16 bit black and white picture, and compare the 100% white to the 10% left white screen (illuminated by reflections only).

The absolute scale doesn't matter, I'm only interested in the ratio.
I have not done this myself - as my room is hardly a bat cave (I have mid brown walls but a white ceiling). Perhaps I will make the measurement and report back.
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post #1268 of 1275 Old 11-02-2014, 04:33 PM
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The screen material will make a difference with this type of test.

Last edited by Seegs108; 11-02-2014 at 06:59 PM.
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post #1269 of 1275 Old 11-02-2014, 06:55 PM
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Quote:
Originally Posted by Seegs108 View Post
The screen material will make a difference with type of test.
True, so list the screen material when making the test,
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post #1270 of 1275 Old 11-11-2014, 02:32 AM
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Hi guys,

First time poster here. I have been doing some research/ forum browsing in regards to light treating home theater rooms. I have a dedicated home theater room with an open back leading into an open plan kitchen.

My gear consists of:
JAMO CONCERT D870s as fronts(pm7004), D830s as surrounds, D8 center (biamp from a marantz pm7004), Concert 80 rear surrounds, and a C80 sub. My preamp/processing amp is a Yamaha rx v1075.
Projector is a panasonic ptae1000 on a 100inch electric screen.
My room is 3.5m wide, 2.5m high and 4.5m long.

So my idea is to run black felt on both sides of the screen wall(these will be about 100mm behind the screen), paint the screen roll housing matt black, line 1m out from the screen on both sides and the ceiling with black felt and have a red rug directly underneath the screen.

My question is, will this be enough to get the image to 'float' as it were and have no or very little wall/ceiling reflections?

Thanks in advance.

Cameron
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post #1271 of 1275 Old 11-11-2014, 10:12 AM
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Quote:
Originally Posted by Cameron Lett View Post
Hi guys,

First time poster here. I have been doing some research/ forum browsing in regards to light treating home theater rooms. I have a dedicated home theater room with an open back leading into an open plan kitchen.

My gear consists of:
JAMO CONCERT D870s as fronts(pm7004), D830s as surrounds, D8 center (biamp from a marantz pm7004), Concert 80 rear surrounds, and a C80 sub. My preamp/processing amp is a Yamaha rx v1075.
Projector is a panasonic ptae1000 on a 100inch electric screen.
My room is 3.5m wide, 2.5m high and 4.5m long.

So my idea is to run black felt on both sides of the screen wall(these will be about 100mm behind the screen), paint the screen roll housing matt black, line 1m out from the screen on both sides and the ceiling with black felt and have a red rug directly underneath the screen.

My question is, will this be enough to get the image to 'float' as it were and have no or very little wall/ceiling reflections?

Thanks in advance.

Cameron
It should certainly help. Blacking out the screen wall and floor / ceiling adjacent to the screen made a big improvement in my theater. I'd use black rugs if I were you under the screen - you can buy them on line at Walmart. As far as that open back area - curtains or drapes possible that look decorative and slide out of the way when not in use ?

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post #1272 of 1275 Old 11-17-2014, 07:32 PM
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I also designed my HT to look homey, living room by day and convert to a HT at night. I have a motorized AT screen come down from the ceiling to accomplish a large part of this.
I also thought about putting up black velvet curtains that I could open and close, however by doing so I'd be covering the acoustic panels on the wall. Is there a workaround that I'm missing?
Thx
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post #1273 of 1275 Old 11-17-2014, 09:03 PM
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Quote:
Originally Posted by cgott42 View Post
I also designed my HT to look homey, living room by day and convert to a HT at night. I have a motorized AT screen come down from the ceiling to accomplish a large part of this.
I also thought about putting up black velvet curtains that I could open and close, however by doing so I'd be covering the acoustic panels on the wall. Is there a workaround that I'm missing?
Thx
Not sure if it is something you would want to do but I do removeable velvet panels.. Embedded metal strips at the top of the wall, magnets held on the back of velvet with gaffer tape.. see this link for some pics and some comments once photo is clicked on. Livingroom update for projection.
You could make multiple panels surrounding your acoustic treatment..
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post #1274 of 1275 Old 11-17-2014, 09:19 PM
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Quote:
Originally Posted by airscapes View Post
Not sure if it is something you would want to do but I do removeable velvet panels.. Embedded metal strips at the top of the wall, magnets held on the back of velvet with gaffer tape.. see this link for some pics and some comments once photo is clicked on. Livingroom update for projection.
You could make multiple panels surrounding your acoustic treatment..
thanks, thought not sure how much difference it would make in terms of blackening the room as the acoustic panels take up a large section of the wall between the screen and seats
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