I built an acoustically transparent screen - Page 3 - AVS Forum
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post #61 of 70 Old 01-20-2014, 08:58 AM
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As for SPL changes at certain frequencies, even without Atmos, removing the grills behind the screen should compensate for at least some of the frequency interaction with the screen. My biggest issue is finding time with other projects I have to building the screen wall.
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post #62 of 70 Old 01-20-2014, 10:29 PM
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Just wanted to give credit where credit is due!
Alan you motivated me to try this for myself using a similar approach for the screen!
Thanks for the details you've provided here!
You can see my calibrated results in the 120" Spandex thread.
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post #63 of 70 Old 01-25-2014, 04:01 PM
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Can you please let me know what should be done to place a Bowers and Wilkins 683 floor standing speakers and CM center speaker behind the screen. Should Baffle board built for it? I have not build the screen yet. The wall size is 12.5' X 7' after framed. It is a 9' basement celling. The room length is 24'.
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post #64 of 70 Old 01-25-2014, 06:41 PM
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You will need to build supportive shelving suspends the Floor Standers above the bottom edge of the screen, and the Center Channel at approximately "Screen Center".

The screen itself should be hung so that the Speakers are at or slightly less than 2" from the inside surface.

The only reason you would need a Baffle would be because the Speakers need enclosing....or that the Screen was going to stand off the wall more than 2' and supportive shelving could not be built to be that deep.

To quote James T. Kirk;
"I'm laughing at the superior intellect"

http://www.invisiblestereo.com
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post #65 of 70 Old 01-26-2014, 06:05 PM
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Do I need the baffle even if the speaker has a enclosure? Please check the speaker in the following link.
http://www.bowers-wilkins.com/Speakers/Home_Audio/600_Series/683.html
Can you please suggest a link explain step by step instructions to make 16:9 acoustically transparent screen with 150" diagonal. The LCD projector is Epson PowerLite Home Cinema 6500 UB Projector. Basement_personal_latest.jpg 383k .jpg file
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post #66 of 70 Old 01-27-2014, 02:00 AM
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Are you able to suspend Floor Standing speakers on a wall? A "Baffle" can denote a constructed surface with openings and supportive shelves.

The 6500 really doesn't have the lumen output to drive a DIY AT Screen of 150" diagonal. Even at the shortest throw distance possible you will only be able to achieve 9 foot lambert of reflective brightness.

To quote James T. Kirk;
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http://www.invisiblestereo.com
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post #67 of 70 Old 02-02-2014, 05:51 PM - Thread Starter
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Latest on my room is I have installed both wide and high front speakers.



Watching the Super Bowl in Audessy DSX mode and the hight speakers are alive with stadium noise!

Alan in Boise
Mitsubishi 3800 projector onto 103 inch DIY AT screen.
Onkyo TX NR-818. Sound ably handled with legacy Minimus 77 and Minimus 7 speakers
DIY IB sub system. Two pairs of Dayton 15 inch and one pair of JBL 12 inch.
Power amps used are Harman Kardon Signature 2.1 Kenwood KM-X1 Hafler DH200
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post #68 of 70 Old 02-03-2014, 07:02 PM
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Quote:
Originally Posted by awblackmon View Post

Latest on my room is I have installed both wide and high front speakers.



Watching the Super Bowl in Audessy DSX mode and the hight speakers are alive with stadium noise!

Very nice! I look forward to doing the same in my next house with a new Onkyo 5510 or newer model when I move in about a year. (thats why my current setup was made with a temporary free standing AT screen!)
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post #69 of 70 Old 09-01-2014, 01:19 PM
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Hello awblackmon and phatboy...
Not sure if this thread is still alive... however, im dreaming. Of bbuilding my own ht room with a at screen.
Your posts are inspirational and make me feel i can do it too.

My basement is unfinished. It has a 24' x 23' area covered by concrete walls on two sides. I plan to/want to build a baffle wall behind the screen to house the speakers. I have the energy RC-70 speakers 7 of them for LCR + Surround + Rear Surround.

Do u recommend a baffle in my situation?
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post #70 of 70 Old 09-01-2014, 06:47 PM
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At 23' or 24', either amounts to a very sizable Baffle Wall, one that will demand enough support to actually obtain true "Partition Wall" status.

To quote James T. Kirk;
"I'm laughing at the superior intellect"

http://www.invisiblestereo.com
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