This is a duplicate thread about guys who have designed their HT with AT screens and mains behind their screen.


How do you like the experience ? I am in the process of upgrading to a AT screen, new PJ and a CIH 2.35:1 lens from CAVX , ( the "Aussiemorphic" ).


I'm sure this will add focus to the dialog, as this has been my pet peeve for years.

KG

Using the Smx screen the experience has been bloody fantastic. Dialog comes directly from the actors mouths, not the floor or ceiling, sound quality is excellent, [of course that depends also on the quality of your speakers and processing, but in general] My REVELS are 2" behind the screen by the way the recommended range is 2" to 24"

Oh and it isn't just GUYS remember that designed thier HT with AT screens and mains behind the screen!!! LOL

Using the Smx screen the experience has been bloody fantastic. Dialog comes directly from the actors mouths, not the floor or ceiling, sound quality is excellent, [of course that depends also on the quality of your speakers and processing, but in general] My REVELS are 2" behind the screen by the way the recommended range is 2" to 24"

Oh and it isn't just GUYS remember that designed thier HT with AT screens and mains behind the screen!!! LOL
I have a 13.5' X 15' room I'm working at. I would like a AT screen setup. What is the recommended viewing distance? So you don't see the moire stuff, or does it just depend on the direction of the weave? Thanks.

PS- I want a 106" screen at a 12' viewing distance. 720p projector (for now)

With Smx material you have to try it in your set up before you assemble your screen to determine if there will be a Moire problem or not, you need to stretch the sample tight and rotate it if moire is seen until it disappears. that shows you how many degrees to tilt the fabric if you need to.
I have about a 10 degree tilt to mine but it varies with every situation, because it is dependent on the particular projector, length of throw etc.
720p will be less likely to show moire than 1080p. So you may want to allow more tilt to your fabric for future use.

As to the recommended viewing distance, I personally say out the window with it. I find the recommended charts totally inadequate to real life usage by those on this forum.
in my case I have a 120" wide SMX screen and my seating is 9.5' and 12.5' and it is fine from both locations, If I was following the chart I would start at 15' away, which would be ridiculous.

With Smx material you have to try it in your set up before you assemble your screen to determine if there will be a Moire problem or not, you need to stretch the sample tight and rotate it if moire is seen until it disappears. that shows you how many degrees to tilt the fabric if you need to.
I have about a 10 degree tilt to mine but it varies with every situation, because it is dependent on the particular projector, length of throw etc.
720p will be less likely to show moire than 1080p. So you may want to allow more tilt to your fabric for future use.

As to the recommended viewing distance, I personally say out the window with it. I find the recommended charts totally inadequate to real life usage by those on this forum.
in my case I have a 120" wide SMX screen and my seating is 9.5' and 12.5' and it is fine from both locations, If I was following the chart I would start at 15' away, which would be ridiculous.We're the same. I have a 127"W SMX screen and we have our front row at 12.5'. I love it and so does my wife.

C.Nickerson

which wall are you planing to put the screen on the 15 or the 13.5

I have a 13.5' X 15' room I'm working at. I would like a AT screen setup. What is the recommended viewing distance? So you don't see the moire stuff, or does it just depend on the direction of the weave? Thanks.

PS- I want a 106" screen at a 12' viewing distance. 720p projector (for now)


Give or take a few inches, our rooms are about the same. I'm to believe I will not be seeing moire (with the help of the rotation of material and the weave is pretty tight.This material is pretty tough too.I doubt the perferation i'll see it from 10' away.And when they say "weave", its really kinda melded together.I was thinking more like cloth weave.My bad.

With the mains behind the screen, I doubt I'll be doing anything but watching and wondering how i went this long without an AT screen.

I'll be attempting a 100"x42" 2.35:1 CIH . What i'll do is get the projector mounted as far back as I can.Mount the lens, and makeshift a screen to see how much rotation I'll need and if i can get the image that wide (100"). If it looks good i'll start to build the screen frame.I'm thinking i will be scaling it down a bit, buy what ever the size, it will look great and sound fantastic !


KG

I just recently hung my AT screen. I'm starting with a Dazian screen, as I'm also upgtading my projector, and wanted to get a screen in with no possibility of moire. Later, if I need to upgrade to something brighter, I'll be out very little cash. So far, I love it. I have three identical MTM inwalls, and the soundstage is very nice and tied to the screen.

Anyone opt to just mount the center behind the screen and wall mount the L&R to broaden the sound stage alittle.

KG

With Smx material you have to try it in your set up before you assemble your screen to determine if there will be a Moire problem or not, you need to stretch the sample tight and rotate it if moire is seen until it disappears. that shows you how many degrees to tilt the fabric if you need to.
I have about a 10 degree tilt to mine but it varies with every situation, because it is dependent on the particular projector, length of throw etc.
720p will be less likely to show moire than 1080p. So you may want to allow more tilt to your fabric for future use.

As to the recommended viewing distance, I personally say out the window with it. I find the recommended charts totally inadequate to real life usage by those on this forum.
in my case I have a 120" wide SMX screen and my seating is 9.5' and 12.5' and it is fine from both locations, If I was following the chart I would start at 15' away, which would be ridiculous.

Very interesting. There are alot of theories that need to be explorer to see if they indeed apply to us.

Also interesting is the moire effect and 720p vs. 1080p . I kinda wish there was a way to store my excess fabric for future use.I think there may be as my frame is not complete yet...hmmmm

I am about to put my SMX up, with inwalls behind it. The center of the screen will be about 61" from the floor and seated ear height for the first row (about 13' back) is 39" for me. That leaves a 22" height difference between ears and tweeters if i center the tweeters on the screen. i can't lower the screen much because my ceiling mounted Sharp 20K PJ doesn't have sufficient lens shift and must be mounted more or less within top and bottom of the screen. The tweeters of the speakers i expect to use (Klipsch Ultra 2 inwalls) are not directable.

Does anyone have experience with tweeters mounted this far above seated ear height without angling the speakers downward? I'm concerned about losing some of the soundstaging due to being that far off axis.

Thanks

My tweeters (horns actually - Klipsch KLF-30s and Center) are mounted at ear height for the front row. This puts them about 1/3 the way up from the bottom of the screen. This has worked very well. I don't think the tweeters need to be "centered" on the screen, but others may think differently. To me, it was more important to have them at ear level. Most likely not a big difference either way at a 13' sitting position.

Tom

I have had a Stewart 16 x9 microperf for four years and hav eloved it. I used Triad Classic golds for the first two years and since the Seation Catayst.Great great experience overall essentially notrhing to not like.

I will have my Vistascope (also Stewart) microperf X2 set up in the next couple of days.

Art

Does anyone have a source for a motorized AT screen under $600.00? I am using a Mitsubushi HD1000 PJ in a 12 x 19' room.

I have my tweeters centered at one third DOWN the screen which puts the center center about where peoples heads on the screen usually are. This gives an incredible realism to dialog. But then my screen starts at the ceiling of the procenium which is 10"
lower then the theater ceiling proper. So this puts the tweeters about 2' above ears of first row and pretty close to straight on for the second [Prime] row. all surrounds are 2' above ears of second row.

Does anyone have a source for a motorized AT screen under $600.00? I am using a Mitsubushi HD1000 PJ in a 12 x 19' room.


Not under $600...but going with the caseless option you can get close at:

http://www.seymourav.com/store.asp

Anyone opt to just mount the center behind the screen and wall mount the L&R to broaden the sound stage alittle.

KG

Yes, I mounted the center behind my SMX screen and the fronts about a foot outside the screen edge.
I now that all tweeters across the front should be at ear level but, due to room constraints the center channel is about 8" above ear level and the mains at ear level.
This puts the center channel about a 3rd of the way up from the bottom.
This works very well.
I have read that this is an optimal set up as nothing that is visible on the screen comes out of your fronts anyway, just out of the center.
ie. FL&FR carry music, wind, crickets, the truck peeling out off screen ect.

I kinda wish there was a way to store my excess fabric for future use.I think there may be as my frame is not complete yet...hmmmm
If your screen is SMX, Ruben says you can leave it on the original roll for along time with no effect.

Does anyone have a source for a motorized AT screen under $600.00? I am using a Mitsubushi HD1000 PJ in a 12 x 19' room.
I built my own motorized rolldown screen.
Screen material cost the most.
If you subtract the screen material I have 70 dollars into the screen, 50 of that was for the pillow blocks I used as bearings on the ends.
My screen works fantastic.
:D

Hey Hound,
did you have a tough time adjusting the degree of tilt to eliminate the moire effect ?

My room is just about 12' in the front and widens in the back to about 13, but is about 23' long. Here is a pic of the 120"(W) screen opening with the Fronts in place. (had to show off the pic since I just put the speakers in tonight ;) )

Hey Hound,
did you have a tough time adjusting the degree of tilt to eliminate the moire effect ?

I'm running an HD1000u at 13' 6", 98", 16:9 screen.
I did not have moire at 0 degrees, I rotated the material 10 degrees as this was the most I could and still get a 98" screen without buying another yard of material. (Trying to future proof the screen)
Yes, laying out the material and cutting it square at a 10 degree tilt, rotation, was pretty tricky.
Especially when a mistake was going to cost me several hundred dollars.

My room is just about 12' in the front and widens in the back to about 13, but is about 23' long. Here is a pic of the 120"(W) screen opening with the Fronts in place. (had to show off the pic since I just put the speakers in tonight ;) )

Looks great !

Mine is more of an "In your face setup". I will only be sitting about 10' from the screen (100" x 42").The room is 13.5' wide and 15' front to back. The 9' ceiling should work out well for PJ mounting.

Does anyone have a source for a motorized AT screen under $600.00? I am using a Mitsubushi HD1000 PJ in a 12 x 19' room.

I don't know of any motorized screen that is under that price. The cheapest are around $700, and usually the material alone (even when SMX was DIY) was around that price.