Da-Lite Audio Vision

On Sun, 17 Jun 2001 16:10:49 -0500, Randy Howard <r @thegateway.net>

I had a Da-Lite AV screen and could see the perforation from 10'
distance and hadn't to look very hard. There was also a kind of nasty
interaction between the holes and the pixels of my XGA projector which
seemed to reduce the apparent resolution.

And please avoid anything reflecting (glas, shiny furniture, ...) and
equipment leds behind the screen. This is very annoying with a
perforated screen.

Look at www.avsforum.com for a lot of comments regarding acoustically
transparent screens.

Emil

Some perf screens have evenly spaced perforations which can interact
with a LCD/DLP projector to form Moire interference patterns. Stewart
screens stagger the perforations slightly to avoid this problem.

--

Stewart Pinkerton  |  Music is art, audio is engineering

On Mon, 18 Jun 2001 00:23:10 -0500, Randy Howard <r @thegateway.net>

There are two types of perforated screens from Stewart:
Cineperf and Microperf

I assume you have a micro-perforated screen.

There was even a problem with the Sony 10HT and a Stewart Microperf
screen. Just look at www.avsforum.com . It all depends on the layout of
the holes and the relative distance of pixels and holes.

I just wrote it because most people use a roll-down screen because there
is something in front of the wall which doesn't allow mounting of the
screen at the wall. And if this has the above properties a screen with
holes isn't a good choice.

Emil

In article <3b2e2494.43273 @news.freeserve.net>,
pate @popmail.dircon.co.uk says...

Makes sense.  Wonder why Da-Lite do not do likewise?

--
r @thegateway.net

the audio vision is available as an option on most of dalites screen
materials. if the screen is not perf'd sound won't go through it

Thanks- but does that degrade the picture?

In article <3B2C2BBC.C5D9C @gte.net>, tom.c @gte.net says...

Standing a foot from the screen?  Sure.  From any normal
distance to a typical seating position, no.  Note: I am
speaking from experience with the Stewart Micro-perf
acoustically transparent screens.  The Da-Lite screens
I have seen (admittedly few) have always had a bit of
visible "grain" to me, that I find bothersome.  I have
not evaluated one of their acoustically transparent
screens.  I have a Stewart, and you cannot tell there
are perforations unless you are VERY close to the
screen and explicitly looking for them.

--
r @thegateway.net