Xiaomi MIJIA Laser Projector 4K version with 4K resolution launched. - Page 38 - AVS Forum | Home Theater Discussions And Reviews
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post #1111 of 1634 Old 07-11-2019, 06:56 AM
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Well, yesterday when I was installing I had the distortion at the top even with the the screen. But you are right about flat surfaces. Because of the way the screen hangs it is slightly off the wall at the top and touching at the bottom. If you do not compensate for this it will also impact the image.
ust projectors can be an uber pain in the ass to perfectly align to a surface, especially if you happen to suffer from any shade of ocd, which is why i always felt that the implied simple installation of a ust pj vs a standard throw pj was very overstated... heck, adjustable spacers for the back of the screen, one for each corner and one for each span would even be helpful when it comes to ust projectors, ha ha...

from opotma: "Like all Ultra short projectors; to get a perfect image requires a completely flat surface. As most walls are not entirely flat, to avoid slight distortion to the top of the picture, you may need to install a screen onto your projection surface for a perfect image."

from elite screens: "Ultra Short Throw Projector Weakness - its inability to work with anything but a perfectly flat projection surface."

from projectorcentral.com: "Screen is critical. A vital requirement for all UST projectors is that the screen or projection surface be perfectly flat and smooth. Any waviness or warp in the screen shows up much more with a UST projector because of its acute upward angle of projection. Pop-up screens are useless, and tab-tensioned pulldown screens work only if they are of high enough quality to hold the screen perfectly flat (most of the cheaper ones won't). "

from projectionscreennet.com: "Projection screens must provide the best possible reflection of the projected image.That is why the discussion is often about view angles, gain and reflection types. Important issues for sure, but in the end the performance of a projection screen depends on how flat it is. After all, waves in the fabric of the screen result in a distorted picture. And for ultra short-throw projection a perfectly flat screen is paramount, because the projection angle is much wider which has an effect on the visibility of any waves in the fabric or surface."


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post #1112 of 1634 Old 07-11-2019, 07:07 AM
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ust projectors can be an uber pain in the ass to perfectly align to a surface, especially if you happen to suffer from any shade of ocd, which is why i always felt that the implied simple installation of a ust pj vs a standard throw pj was very overstated... heck, adjustable spacers for the back of the screen, one for each corner and one for each span would even be helpful when it comes to ust projectors, ha ha...

from opotma: "Like all Ultra short projectors; to get a perfect image requires a completely flat surface. As most walls are not entirely flat, to avoid slight distortion to the top of the picture, you may need to install a screen onto your projection surface for a perfect image."

from elite screens: "Ultra Short Throw Projector Weakness - its inability to work with anything but a perfectly flat projection surface."

from projectorcentral.com: "Screen is critical. A vital requirement for all UST projectors is that the screen or projection surface be perfectly flat and smooth. Any waviness or warp in the screen shows up much more with a UST projector because of its acute upward angle of projection. Pop-up screens are useless, and tab-tensioned pulldown screens work only if they are of high enough quality to hold the screen perfectly flat (most of the cheaper ones won't). "

from projectionscreennet.com: "Projection screens must provide the best possible reflection of the projected image.That is why the discussion is often about view angles, gain and reflection types. Important issues for sure, but in the end the performance of a projection screen depends on how flat it is. After all, waves in the fabric of the screen result in a distorted picture. And for ultra short-throw projection a perfectly flat screen is paramount, because the projection angle is much wider which has an effect on the visibility of any waves in the fabric or surface."




couldn't agree more.. Ive set up many projectors and TV's and this thing is a PAIN IN THE ASS

Got it set up yesterday and even with a fixed screen its really hard to get it lined up just perfect(as the wall ins't flat so the screen frame is slightly off causing a bend) , Since there is no movable lens it has to be done with tiny manual placements which is a chore as the wall isn't straight(and why the hell does the screen switch off when I get in front of the light source or move the projector??). Plus when trying to get to a 135" or bigger screen the only real option is to floor mount the projector or build a small 8" stand lol. I keep seeing shots of people using cabinets but then the projected image is way too high.
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post #1113 of 1634 Old 07-11-2019, 07:32 AM
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Quote:
Originally Posted by aeneas01 View Post
ust projectors can be an uber pain in the ass to perfectly align to a surface, especially if you happen to suffer from any shade of ocd, which is why i always felt that the implied simple installation of a ust pj vs a standard throw pj was very overstated... heck, adjustable spacers for the back of the screen, one for each corner and one for each span would even be helpful when it comes to ust projectors, ha ha...

from opotma: "Like all Ultra short projectors; to get a perfect image requires a completely flat surface. As most walls are not entirely flat, to avoid slight distortion to the top of the picture, you may need to install a screen onto your projection surface for a perfect image."

from elite screens: "Ultra Short Throw Projector Weakness - its inability to work with anything but a perfectly flat projection surface."

from projectorcentral.com: "Screen is critical. A vital requirement for all UST projectors is that the screen or projection surface be perfectly flat and smooth. Any waviness or warp in the screen shows up much more with a UST projector because of its acute upward angle of projection. Pop-up screens are useless, and tab-tensioned pulldown screens work only if they are of high enough quality to hold the screen perfectly flat (most of the cheaper ones won't). "

from projectionscreennet.com: "Projection screens must provide the best possible reflection of the projected image.That is why the discussion is often about view angles, gain and reflection types. Important issues for sure, but in the end the performance of a projection screen depends on how flat it is. After all, waves in the fabric of the screen result in a distorted picture. And for ultra short-throw projection a perfectly flat screen is paramount, because the projection angle is much wider which has an effect on the visibility of any waves in the fabric or surface."




couldn't agree more.. Ive set up many projectors and TV's and this thing is a PAIN IN THE ASS<img src="https://www.avsforum.com/forum/images/AVSForum/smilies/tango_face_sad.png" border="0" alt="" title="Frown" class="inlineimg" />

Got it set up yesterday and even with a fixed screen its really hard to get it lined up just perfect(as the wall ins't flat so the screen frame is slightly off causing a bend) , Since there is no movable lens it has to be done with tiny manual placements which is a chore as the wall isn't straight(and why the hell does the screen switch off when I get in front of the light source or move the projector??). Plus when trying to get to a 135" or bigger screen the only real option is to floor mount the projector or build a small 8" stand lol. I keep seeing shots of people using cabinets but then the projected image is way too high. [IMG class=inlineimg]/forum/images/smilies/confused.gif[/IMG]
Fyi you can turn off the safety feature that turns off the light when you go in front of the light. Goto settings->general->turn off IR senor (I don’t know if that’s the exact name of it, at the office now) and turn it off.
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post #1114 of 1634 Old 07-11-2019, 07:33 AM
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couldn't agree more.. Ive set up many projectors and TV's and this thing is a PAIN IN THE ASS
yep, it can be a real ass-kicker.

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and why the hell does the screen switch off when I get in front of the light source or move the projector??
it's a safety feature, to protect folks (especially children) from accidentally looking into the laser, but it can be disabled in settings, which i've already done, don't remember exactly where i found it but it's there (also, iirc, the setting is worded a bit oddly so it might not be immediately obvious as you thumb through the pj settings options).

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Got it set up yesterday and even with a fixed screen its really hard to get it lined up just perfect(as the wall ins't flat so the screen frame is slightly off causing a bend) , Since there is no movable lens it has to be done with tiny manual placements which is a chore as the wall isn't straight. Plus when trying to get to a 135" or bigger screen the only real option is to floor mount the projector or build a small 8" stand lol. I keep seeing shots of people using cabinets but then the projected image is way too high.
when i received my first 4k laser pj (dell) i thought there was something wrong with it because of the warped edges on the projected image, even when projected on a screen, and after reading that others were experiencing the same thing i just wrote it off as a big ust downside.

then i got away from forums and started reading quality reviews and manufacturer recommendations which all emphasized that a perfectly flat surface was absolutely mandatory when i came to ust or you would see warping, which led me to take a closer look at my screen (which looked perfectly flat to me and everyone else)... not only was my screen not perfectly flat, but like you i discovered that my wall wasn't perfectly flat either... this was confirmed when i put my finger behind the screen frame and moved it forward ever so slightly at certain points and the warping disappeared, go figure...
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post #1115 of 1634 Old 07-11-2019, 08:19 AM
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My Silver ticket screen has 56 springs that connect fromt he outer edge of the screen to the frame. You attach them all and then hammer two posts in the center of the screen to stretch them all out. It works great now.
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post #1116 of 1634 Old 07-11-2019, 10:06 AM
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Is anyone using a retractable screen that's on a motor and can be rolled up and down?

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post #1117 of 1634 Old 07-11-2019, 10:11 AM
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Is anyone using a retractable screen that's on a motor and can be rolled up and down?

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I had to replace mine when I got this. I do not recommend trying it unless its a tension screen. Even then I do not recommend it.

I now have a framed screen hanging from the ceiling with hooks that I can pull out and lift to get behind it when I need to.
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post #1118 of 1634 Old 07-11-2019, 11:09 AM
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yep, it can be a real ass-kicker.


it's a safety feature, to protect folks (especially children) from accidentally looking into the laser, but it can be disabled in settings, which i've already done, don't remember exactly where i found it but it's there (also, iirc, the setting is worded a bit oddly so it might not be immediately obvious as you thumb through the pj settings options).


when i received my first 4k laser pj (dell) i thought there was something wrong with it because of the warped edges on the projected image, even when projected on a screen, and after reading that others were experiencing the same thing i just wrote it off as a big ust downside.

then i got away from forums and started reading quality reviews and manufacturer recommendations which all emphasized that a perfectly flat surface was absolutely mandatory when i came to ust or you would see warping, which led me to take a closer look at my screen (which looked perfectly flat to me and everyone else)... not only was my screen not perfectly flat, but like you i discovered that my wall wasn't perfectly flat either... this was confirmed when i put my finger behind the screen frame and moved it forward ever so slightly at certain points and the warping disappeared, go figure...

this is exactly what I did this morning and discovered pulling the bottom of the screen forward 1/2 inch took away the warping. So now I am putting little pieces of foam behind certain spots around the Silver Ticket frame to even out the image.


and being in a quiet room with this projector I can: 100% hear the fan whine. Its BAD.. Worse than any projector or monitor I've ever used. If it doesn't go away with loud audio, then I will put a flap on the left side vent (which completely takes away the whine)
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post #1119 of 1634 Old 07-11-2019, 11:54 AM
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this is exactly what I did this morning and discovered pulling the bottom of the screen forward 1/2 inch took away the warping. So now I am putting little pieces of foam behind certain spots around the Silver Ticket frame to even out the image.


and being in a quiet room with this projector I can: 100% hear the fan whine. Its BAD.. Worse than any projector or monitor I've ever used. If it doesn't go away with loud audio, then I will put a flap on the left side vent (which completely takes away the whine)
That is interesting. Coming from a BenQ 2150ST this is at least 5 times quieter.
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post #1120 of 1634 Old 07-11-2019, 02:27 PM
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Alright, I have had a couple of days to do the basics and here are my findings:

I knew USTs were bad with uneven surfaces but I honestly didn't think they were THIS unforgiving. The wall was one thing, but I hooked up my 120" Azure Pet Crystal screen (more on this later) and there it is again. The bow up top is like a gently rolling hill in Ireland. It's very obvious and one of those things, guess what, that looks way worse in real life as opposed to pics. If you have no choice, I guess you can live with it but I have realized that this entire journey has been useless. I live in the Middle East. They don't do homes with such grand perfection. The walls are are bound to be uneven, if I hook up a screen to the same wall, and the hooks are far apart across a very minor ripple in the wall, the screen WILL bend, ever so slightly, and it's enough to mess up the image. The only, minor, saving grace is that cinema-scope movies with black bars at the top and bottom are less affected though the bend is still there. A PC looks horrible.

Speaking of horrible, all 4K/HDCP handshakes are terrible. My Roku Ultra refuses to do 4K UDR at 60Hz (is that even supported?) and even at 30Hz, the handshakes are erratic. I am running this via a fiber-HDMI cable from my Denon AVR-X4400H and the ONLY thing that works every time is my Nvidia Shield. Not the PC (it's a living room NUC with Intel 540 graphics) and not Roku. I have switched the Roku back to 1080p because I switch inputs a lot between SAT TV, Roku, Shield and my Chromecast. Every input switch is a pain with this projector.

As for the screen, I got a good price but I think you get what you pay for. The Pet Crystal cloth does look amazing (though I think it's not as huge a difference if I was simply projecting on the wall as I have for the last ten years). I do have a lot of ambient light in the room. There's a patio door and overhead lights. I just thought that the image bend issue would resolve itself but try as I might it hasn't. It may be that the frame of the screen is not very impressive aluminum. I see the paint on the 1 centimeter (outer) border already starting to chip off. The thing with aluminum is that the lower grade it is, the easier it bends. I think that's what's happening here. I have no way to fix it and I guess after a sub <3K USD investment, I will live with it, but I am seriously regretting not buying a calibrated Benq (long throw) LK970 or 990 laser. It's twice the price but 1/10th of the heartache. I wasted so much time trying to get everything right and still failed miserably at the end. I truly regret both the screen and the PJ purchase, even with the beautiful and sharp image that it puts up, out of the box.

Oh and the full reset didn't do jack sh1t for me. Regret upon regret.

(Pics to follow from my phone)
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post #1121 of 1634 Old 07-11-2019, 02:42 PM
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Alright, I have had a couple of days to do the basics and here are my findings:

I knew USTs were bad with uneven surfaces but I honestly didn't think they were THIS unforgiving. The wall was one thing, but I hooked up my 120" Azure Pet Crystal screen (more on this later) and there it is again. The bow up top is like a gently rolling hill in Ireland. It's very obvious and one of those things, guess what, that looks way worse in real life as opposed to pics. If you have no choice, I guess you can live with it but I have realized that this entire journey has been useless. I live in the Middle East. They don't do homes with such grand perfection. The walls are are bound to be uneven, if I hook up a screen to the same wall, and the hooks are far apart across a very minor ripple in the wall, the screen WILL bend, ever so slightly, and it's enough to mess up the image. The only, minor, saving grace is that cinema-scope movies with black bars at the top and bottom are less affected though the bend is still there. A PC looks horrible.

Speaking of horrible, all 4K/HDCP handshakes are terrible. My Roku Ultra refuses to do 4K UDR at 60Hz (is that even supported?) and even at 30Hz, the handshakes are erratic. I am running this via a fiber-HDMI cable from my Denon AVR-X4400H and the ONLY thing that works every time is my Nvidia Shield. Not the PC (it's a living room NUC with Intel 540 graphics) and not Roku. I have switched the Roku back to 1080p because I switch inputs a lot between SAT TV, Roku, Shield and my Chromecast. Every input switch is a pain with this projector.

As for the screen, I got a good price but I think you get what you pay for. The Pet Crystal cloth does look amazing (though I think it's not as huge a difference if I was simply projecting on the wall as I have for the last ten years). I do have a lot of ambient light in the room. There's a patio door and overhead lights. I just thought that the image bend issue would resolve itself but try as I might it hasn't. It may be that the frame of the screen is not very impressive aluminum. I see the paint on the 1 centimeter (outer) border already starting to chip off. The thing with aluminum is that the lower grade it is, the easier it bends. I think that's what's happening here. I have no way to fix it and I guess after a sub <3K USD investment, I will live with it, but I am seriously regretting not buying a calibrated Benq (long throw) LK970 or 990 laser. It's twice the price but 1/10th of the heartache. I wasted so much time trying to get everything right and still failed miserably at the end. I truly regret both the screen and the PJ purchase, even with the beautiful and sharp image that it puts up, out of the box.

Oh and the full reset didn't do jack sh1t for me. Regret upon regret.

(Pics to follow from my phone)
Did you buy a tensioned screen with a frame?
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post #1122 of 1634 Old 07-11-2019, 02:56 PM
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Did you buy a tensioned screen with a frame?
Yes. A gazilion springs. Took ages to assemble.

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post #1123 of 1634 Old 07-11-2019, 03:08 PM
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Waf

You know what really sucks is that I massively borked my WAF in trying to get this screen up on the wall. It's the living room, all obvious items of technical origin are a giant no-no. I got away with a small overhead PJ and no screen for years but for this, I had to re-arrange the furniture while the Missus was out of town. Oh boy, she is not gonna be a happy camper when she gets back--especially when she sees what a stupid image mistake all of the changes resulted in. Trust me the bend and bow looks much, much worse in person.

I am gonna get it now!
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post #1124 of 1634 Old 07-11-2019, 04:06 PM
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You know what really sucks is that I massively borked my WAF in trying to get this screen up on the wall. It's the living room, all obvious items of technical origin are a giant no-no. I got away with a small overhead PJ and no screen for years but for this, I had to re-arrange the furniture while the Missus was out of town. Oh boy, she is not gonna be a happy camper when she gets back--especially when she sees what a stupid image mistake all of the changes resulted in. Trust me the bend and bow looks much, much worse in person.

I am gonna get it now!
have you tried turning your projector upside down to see if the bowing follows the flip to the bottom of the screen? if it doesn't, and if the bowing is still present at the top of the screen, then i think it's pretty clear that it's the surface you're projecting on that's the issue... but if the bowing does follow the flip and now displays on the bottom, it would appear that it's a lens issue.

also, if it's any consolation i owned the benq 4k laser short throw (lk953st) for close to a month but sent it back for a full refund (benq's 30-day full refund if not happy policy) because i just couldn't rationalize the $5k for the image it displayed, plus it had a host of other quirks... i'm not a "black level" snob, not even close, in fact i think some folks get carried with trying to "achieve" deep blacks to the point where the images are just too dark... but in the case of the benq it really did suffer from less than impressive blacks, and the lack of contrast the pj provided really undermined its hdr capabilities.

re handshakes, 4k hdr laser projector owners have been known to go through over a dozen 4k/60hz/118g/444 cables before finding one that works, these projectors are just notoriously picky when it comes to cables.
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post #1125 of 1634 Old 07-11-2019, 04:12 PM
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this is exactly what I did this morning and discovered pulling the bottom of the screen forward 1/2 inch took away the warping. So now I am putting little pieces of foam behind certain spots around the Silver Ticket frame to even out the image.


and being in a quiet room with this projector I can: 100% hear the fan whine. Its BAD.. Worse than any projector or monitor I've ever used. If it doesn't go away with loud audio, then I will put a flap on the left side vent (which completely takes away the whine)
yeah, in the past i used push pins behind the screen as spacers to align it, will probably have to do the same thing again when my new screen arrives... also, sorry to hear about your fan noise, i don't have it all.
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post #1126 of 1634 Old 07-11-2019, 04:25 PM
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Sorry if this is a dumb question but, after putting in all the springs, you put the brace in and hammered it in place, right? And you are positive it is centered?

If so, between this and the noise, you might have gotten a damaged product that was dropped hard while shipping or something.
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post #1127 of 1634 Old 07-11-2019, 06:48 PM
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have you tried turning your projector upside down to see if the bowing follows the flip to the bottom of the screen? if it doesn't, and if the bowing is still present at the top of the screen, then i think it's pretty clear that it's the surface you're projecting on that's the issue... but if the bowing does follow the flip and now displays on the bottom, it would appear that it's a lens issue.

also, if it's any consolation i owned the benq 4k laser short throw (lk953st) for close to a month but sent it back for a full refund (benq's 30-day full refund if not happy policy) because i just couldn't rationalize the $5k for the image it displayed, plus it had a host of other quirks... i'm not a "black level" snob, not even close, in fact i think some folks get carried with trying to "achieve" deep blacks to the point where the images are just too dark... but in the case of the benq it really did suffer from less than impressive blacks, and the lack of contrast the pj provided really undermined its hdr capabilities.

re handshakes, 4k hdr laser projector owners have been known to go through over a dozen 4k/60hz/118g/444 cables before finding one that works, these projectors are just notoriously picky when it comes to cables.
I'll try it upside down though holding it that way while trying to avoid the laser isn't exactly a natural act

With regards to the Benq you owned, I was just thinking that the pain I have endured with this UST business is not worth it. For over a decade, I have been using long throw PJs, they have had their quirks but never gave me this much trouble.

If you have a suggestion for a cable, I am open to it. This sucker cost over a hundred dollars from Amazon. Damn fiber-based cables!

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Sorry if this is a dumb question but, after putting in all the springs, you put the brace in and hammered it in place, right? And you are positive it is centered?

If so, between this and the noise, you might have gotten a damaged product that was dropped hard while shipping or something.
Since I am not the only one complaining about noise, I think it's just that I am more sensitive to it. I shouldn't be, since I have been around computer equipment much of my life. I am pretty sure the fan whine is normal.

I am sure the screen is fine but the frame doesn't exactly exude high quality. It's likely just the sensitivity to the curvature of the wall.

Last edited by monakh; 07-11-2019 at 06:52 PM.
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post #1128 of 1634 Old 07-11-2019, 06:55 PM
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Yes. A gazilion springs. Took ages to assemble.

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I had the exact same issue. After tweaking it for a couple of hours the past few nights I got it like the second image. Still not perfect as you can still see some distortion in the top right corner (pic 3). I noticed that if I push back on the corner of the screen it gets better.


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post #1129 of 1634 Old 07-11-2019, 07:10 PM
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I'm waiting for my T-Prism alr screen to come but im just wondering has ANYONE been able to setup their screen with this projector with little to no issues?
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post #1130 of 1634 Old 07-11-2019, 07:11 PM
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Originally Posted by monakh View Post
I'll try it upside down though holding it that way while trying to avoid the laser isn't exactly a natural act

With regards to the Benq you owned, I was just thinking that the pain I have endured with this UST business is not worth it. For over a decade, I have been using long throw PJs, they have had their quirks but never gave me this much trouble.

If you have a suggestion for a cable, I am open to it. This sucker cost over a hundred dollars from Amazon. Damn fiber-based cables!



Since I am not the only one complaining about noise, I think it's just that I am more sensitive to it. I shouldn't be, since I have been around computer equipment much of my life. I am pretty sure the fan whine is normal.

I am sure the screen is fine but the frame doesn't exactly exude high quality. It's likely just the sensitivity to the curvature of the wall.
That's the biggest pain with the UST projectors, they are very unforgiving if they are positioned wrongly.

I must have spent 2+ hours getting mine dead right. I have the 1080 version but at various times it looked like your different photos.

Once I got it setup I haven't touched it again and it's been great for the past 18 months. I am projecting a 146" diagonal image, so almost at the limit and I couldn't be happier with the end result.

You need to make sure the projector is positioned correctly.

Reset the keystone adjustments before you start, and only use them for the final fine tuning tweaks.

It needs to be perfectly level front to back and side to side. I used a spirit level to make sure.

It also needs to be perfectly square to the wall. Measure from each corner of the projector to the wall and rotate the projector slightly until it is square.

It also needs to be the correct height and distance from the screen to fill it.

The wall or screen also needs to be dead flat.

Hope this helps
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post #1131 of 1634 Old 07-11-2019, 09:50 PM
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Originally Posted by Robert Yoo View Post
I'm waiting for my T-Prism alr screen to come but im just wondering has ANYONE been able to setup their screen with this projector with little to no issues?
It takes a little bit to get the screen set up at the correct height but once it is set with a bit of keystone correction it is relatively straight forward to get to fit the screen completely.
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post #1132 of 1634 Old 07-12-2019, 01:53 AM
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Originally Posted by eziggy3 View Post
I had the exact same issue. After tweaking it for a couple of hours the past few nights I got it like the second image. Still not perfect as you can still see some distortion in the top right corner (pic 3). I noticed that if I push back on the corner of the screen it gets better.
Mind sharing some tips since you have just done it recently? I have also spent hours trying to do this. The projector is currently sitting on small table which moves easily but try as I might, I can neither fill up the screen, nor get rid of the distortion. It really shouldn't be this hard!

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Originally Posted by sk8conz View Post
That's the biggest pain with the UST projectors, they are very unforgiving if they are positioned wrongly.

I must have spent 2+ hours getting mine dead right. I have the 1080 version but at various times it looked like your different photos.

<snip>

Hope this helps
Thank you, I will definitely try a bit longer. The tip with the spirit level is handy. Thanks!
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post #1133 of 1634 Old 07-12-2019, 05:01 AM
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You know what really sucks is that I massively borked my WAF in trying to get this screen up on the wall. It's the living room, all obvious items of technical origin are a giant no-no. I got away with a small overhead PJ and no screen for years but for this, I had to re-arrange the furniture while the Missus was out of town. Oh boy, she is not gonna be a happy camper when she gets back--especially when she sees what a stupid image mistake all of the changes resulted in. Trust me the bend and bow looks much, much worse in person.

I am gonna get it now!
buy a huge tempered glass of similar size (usually up to 96 inches in length and 48 inches wide), obviously tempered glass will be super hard and super flat
hang the tempered glass on the wall
and somehow align the warped aluminium frame to match the flatness of the glass
there should be a way to fix it properly to a glass, use ur creativity, i am out of ideas
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post #1134 of 1634 Old 07-12-2019, 05:12 AM
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You're kidding, right?

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post #1135 of 1634 Old 07-12-2019, 05:24 AM
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Originally Posted by clyevo View Post
buy a huge tempered glass of similar size (usually up to 96 inches in length and 48 inches wide), obviously tempered glass will be super hard and super flat
hang the tempered glass on the wall
and somehow align the warped aluminium frame to match the flatness of the glass
there should be a way to fix it properly to a glass, use ur creativity, i am out of ideas
How about the hard glass fresnel type ALR from xyscreen
It's pretty hefty though 175kg in box for the max 100" size screen
It's said to be brighter than the pet ALR screen as it also rejects ambient light from the sides
But the weight i have no idea how to hang that kind of weight on the wall. Might have to hire some bodybuilders to hold it in place while fixing it
Does anyone have any experience comparing both type of ALR screen? Is it worth the 2x price?
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post #1136 of 1634 Old 07-12-2019, 06:01 AM
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Originally Posted by clyevo View Post
How about the hard glass fresnel type ALR from xyscreen
It's pretty hefty though 175kg in box for the max 100" size screen
It's said to be brighter than the pet ALR screen as it also rejects ambient light from the sides
But the weight i have no idea how to hang that kind of weight on the wall. Might have to hire some bodybuilders to hold it in place while fixing it
Does anyone have any experience comparing both type of ALR screen? Is it worth the 2x price?
Thanks for showing this - always thought I would simply buy the XY Screen (PET Crystal) for ALR and assembly myself, but that fresnel screen looks brilliant. Will need to investigate further, but where did you get the 175kg definition from? Have you perhaps checked in with Wendy from XY?
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post #1137 of 1634 Old 07-12-2019, 06:19 AM
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Originally Posted by monakh View Post
You're kidding, right?

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I would just try some spacers to get the hangers away from the wall so the screen is set off.


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post #1138 of 1634 Old 07-12-2019, 06:20 AM
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Originally Posted by monakh View Post
Mind sharing some tips since you have just done it recently? I have also spent hours trying to do this. The projector is currently sitting on small table which moves easily but try as I might, I can neither fill up the screen, nor get rid of the distortion. It really shouldn't be this hard!







Thank you, I will definitely try a bit longer. The tip with the spirit level is handy. Thanks!


One thing that helped the bowing was slightly lifting the rear of the projector, it’s not going to take much


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post #1139 of 1634 Old 07-12-2019, 07:08 AM
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Originally Posted by geronemo3 View Post
Is this a known occurrence with short throw projectors etc or a defect in this projector?


Thanks

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My previous Xiaomi UST did not have this issue. The current one does but it is nowhere near as bad as the original poster.
Mine is only a very minor bend that most the time I dont know it is there unless I look for it.

Reciever: DENON AVR-X7200WA using 7.2.4 with two center speakers (one behind the screen and one below it).
Amplifier: Emotiva XPA-5 Gen1
Projector: Xiaomi UST Laser Projector 4k (2019 edition).
My current setup: https://imgur.com/gallery/RnRc98a
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post #1140 of 1634 Old 07-12-2019, 07:12 AM
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Originally Posted by aeneas01 View Post
i didn't have to pay an additional duty charge upon arrival for my projector which was purchased and shipped directly from china, nor have i had to pay additional duty charges upon arrival for any of the equipment i've purchased directly from china for my business, all of whihc have been in the last couple of weeks.


i guess i'm deaf, i haven't noticed any fan noise, and certainly not after the projector has been turned off... re no power button on the unit, i've always ceiling mounted my projectors so i could never easily get to the power button anyway, it was always much easier for me to just power cycle from the outlet in the rare instances i ran into a prob, so a lack of a power button on the pj is definitely no biggie for me.


yeah, i really don't see any reason to root this pj given you can't get 4k hdr natively thru the gui/apps, but i think it's well worth the effort to install the xda tool i mentioned, in fact it's a no-brainer to me.
I did not have to pay anything for importing this projector either but it is definitely luck based. If it helps USPS delivered mine while the original poster with this issue used UPS.

As for the coil wine I do not really hear it either. Just normal electronic fan noise that is instantly covered up once something plays.

Reciever: DENON AVR-X7200WA using 7.2.4 with two center speakers (one behind the screen and one below it).
Amplifier: Emotiva XPA-5 Gen1
Projector: Xiaomi UST Laser Projector 4k (2019 edition).
My current setup: https://imgur.com/gallery/RnRc98a
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