Official JVC - 20LTD - RS640 (x990/x9900) - RS540 (X790/x7900) - Owners Thread - Page 106 - AVS Forum | Home Theater Discussions And Reviews
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post #3151 of 11992 Old 11-30-2017, 01:16 PM
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Originally Posted by Mikenificent1 View Post
you can see it in the pictures he posted, although they are not that clear, you can see the issue.
Ok, I see it in those pics. I feel confident I didnt see anything like that last night, but I'll double check to make sure.
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post #3152 of 11992 Old 11-30-2017, 01:20 PM
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Originally Posted by Mikenificent1 View Post
you can see it in the pictures he posted, although they are not that clear, you can see the issue.
I can try and get some better ones, but honestly it's tough to take still photos of it. It's REALLY obvious from 5-6 feet from the screen when the picture is in motion in bright scenes, and still readily evident from seating position at about 15 feet. I'm pretty sure if anyone is experiencing it and duplicates the conditions, they will know what I'm talking about right away though.

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post #3153 of 11992 Old 11-30-2017, 01:33 PM
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Originally Posted by rlarsen462 View Post
I can try and get some better ones, but honestly it's tough to take still photos of it. It's REALLY obvious from 5-6 feet from the screen when the picture is in motion in bright scenes, and still readily evident from seating position at about 15 feet. I'm pretty sure if anyone is experiencing it and duplicates the conditions, they will know what I'm talking about right away though.

I'm lucky enough to have a JVC rep in town, he is going to try and come by tomorrow sometime in the next week and see himself as well, I texted him about it this morning. Will update with any news but it would be great if someone else can at least confirm they think they are seeing the same issue.
I won't be home tonight, but will check out Lucy tom night.

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post #3154 of 11992 Old 11-30-2017, 01:38 PM
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Originally Posted by Toe View Post
I won't be home tonight, but will check out Lucy tom night.
Thanks for checking it out...I saw it in Mad Max too...can't really explain what could be going on, and why it's only in that single mode...very weird.

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post #3155 of 11992 Old 11-30-2017, 01:55 PM
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Hi All

I am finally going to be installing my new JVC RS640 today and have a question for the AVS gurus. I am going to connect the JVC to my Marantz 8802A pre-pro to which I will be feeding signals from an Oppo UDP-205. I want to connect a couple of different 10 meter HDMI cables directly from the Marantz to the projector before I snake one through the wall. So here is the question. What is the easiest way for me to determine that the JVC is receiving the correct UHD signal and is displaying the pixel shifted 4K signal? As you can imagine, I do not want to go through the hassle of snaking the HDMI cable through the wall only to find out that it is not passing through the correct video signals. I'd like to see some proof on my screen that the correct video signal is being passed through. Is there a button on the JVC that I can press to visually see what signal is being outputted by the JVC?

Just as an FYI, the first HDMI cable I will try is the 10 meter Ruipro HDMI Premium Certified cable which has been tested and shown to accurately pass HDMI signals. But one always wants to "trust but verify" such claims.
@ARROW-AV posted an exceptional report on HDMI cables: The link is also posted in his signature. Check it out if you haven't already purchased the Ruipro - the Monoprice cables pass the tests and are relatively inexpensive.

Test the cabling by hooking it up between your Oppo -> 8802 -> JVC before going through the wall. I'm using a customzed URC remote but I think there is an info or menu button on the JVC PJ remote that will give you the info or just scroll through the picture menus as I think it's the last selection on the right.

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post #3156 of 11992 Old 11-30-2017, 02:02 PM
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UPDATE: I am an idiot (okay not an update to those know me, I've been an idiot for awhile).

The ringing affect I was seeing in HDR mode was 100% due to MPC...I had disabled it on SDR/Natural mode (set everything to 0), but it was still 5 and 2 on HDR mode. Crazy it was introducing such a brutal artifact, but turning it all to zero completely made it disappear. So for now, problem solved.

Maybe worth confirming if you set MPC to 5 & 2 whether you see the same effect...this is the OOTB setting which is WAY too aggressive IMO.

Thanks...sorry for the slew of posts on this.
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post #3157 of 11992 Old 11-30-2017, 02:05 PM
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Okay on to my next stupid question:

Does anyone else notice that their shift & focus drifts from one "session" to the next? Is this related to warm up time? After fully warming up the unit and setting focus and shift as best I can for my screen, I will note that focus is slightly off and the lens shift has moved slightly when I turn the projector back on again...it doesn't necessarily go back to the previous state just by letting it warm up though, and I invariably have to adjust focus and shift every time I power on the unit.
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post #3158 of 11992 Old 11-30-2017, 02:08 PM
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Originally Posted by rlarsen462 View Post
Okay on to my next stupid question:

Does anyone else notice that their shift & focus drifts from one "session" to the next? Is this related to warm up time? After fully warming up the unit and setting focus and shift as best I can for my screen, I will note that focus is slightly off and the lens shift has moved slightly when I turn the projector back on again...it doesn't necessarily go back to the previous state just by letting it warm up though, and I invariably have to adjust focus and shift every time I power on the unit.
I haven't noticed this yet, how far off have you noticed it. Is it a couple clicks or a bunch of clicks?

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post #3159 of 11992 Old 11-30-2017, 02:09 PM
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Originally Posted by kaotikr1 View Post
I haven't noticed this yet, how far off have you noticed it. Is it a couple clicks or a bunch of clicks?
No more than a few clicks, usually of vertical shift up or down, and a few clicks back and forth messing with focus. Enough to be annoying though...I usually notice the shift issue more as I am not aggressively zoomed onto my border, so it manifests as a black strip on the top or bottom of the screen and I have to shift it off.
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post #3160 of 11992 Old 11-30-2017, 02:11 PM
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Originally Posted by rlarsen462 View Post
UPDATE: I am an idiot (okay not an update to those know me, I've been an idiot for awhile).

The ringing affect I was seeing in HDR mode was 100% due to MPC...I had disabled it on SDR/Natural mode (set everything to 0), but it was still 5 and 2 on HDR mode. Crazy it was introducing such a brutal artifact, but turning it all to zero completely made it disappear. So for now, problem solved.

Maybe worth confirming if you set MPC to 5 & 2 whether you see the same effect...this is the OOTB setting which is WAY too aggressive IMO.

Thanks...sorry for the slew of posts on this.
Always good to check, since HDR mode is independent of SDR mode !
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post #3161 of 11992 Old 11-30-2017, 02:12 PM
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Originally Posted by rlarsen462 View Post
No more than a few clicks, usually of vertical shift up or down, and a few clicks back and forth messing with focus. Enough to be annoying though...I usually notice the shift issue more as I am not aggressively zoomed onto my border, so it manifests as a black strip on the top or bottom of the screen and I have to shift it off.
So it's never the same exact direction? I assume the projector is mounted solid and it's not shifting during the day?

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post #3162 of 11992 Old 11-30-2017, 02:17 PM
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Originally Posted by kaotikr1 View Post
So it's never the same exact direction? I assume the projector is mounted solid and it's not shifting during the day?

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That's what's weird...since I haven't really been tracking it, I can't say for certain but I feel like it's been in different directions. I'll check how solid the mount is, but I cranked it pretty tight...that said, it's on the ceiling and people walking over it all day could shake it some I guess...wouldn't take much movement.
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post #3163 of 11992 Old 11-30-2017, 02:24 PM
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Quote:
Originally Posted by rlarsen462 View Post
No more than a few clicks, usually of vertical shift up or down, and a few clicks back and forth messing with focus. Enough to be annoying though...I usually notice the shift issue more as I am not aggressively zoomed onto my border, so it manifests as a black strip on the top or bottom of the screen and I have to shift it off.
The black bar at top of screen is moving? That could be from different content and it could also be from the projector drifting down on the mount. What mount are you using?
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post #3164 of 11992 Old 11-30-2017, 02:27 PM
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The black bar at top of screen is moving? That could be from different content and it could also be from the projector drifting down on the mount. What mount are you using?
Chief RPA 281...I'll keep an eye on the adjustments I need to make over several days and see if they are consistent in a single direction or not. I'll check mount tightness/security at the same time.
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post #3165 of 11992 Old 11-30-2017, 02:32 PM
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Originally Posted by rlarsen462 View Post
Okay on to my next stupid question:

Does anyone else notice that their shift & focus drifts from one "session" to the next? Is this related to warm up time? After fully warming up the unit and setting focus and shift as best I can for my screen, I will note that focus is slightly off and the lens shift has moved slightly when I turn the projector back on again...it doesn't necessarily go back to the previous state just by letting it warm up though, and I invariably have to adjust focus and shift every time I power on the unit.
My shift commonly drifts on all the motorized lens JVC projectors I've owned from one session to the next, but that's due to all the bass pressure in my room and always watching movies at reference level. Focus and zoom stay rock solid though.
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post #3166 of 11992 Old 11-30-2017, 02:36 PM
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My shift commonly drifts on all the motorized lens JVC projectors I've owned from one session to the next, but that's due to all the bass pressure in my room and always watching movies at reference level. Focus and zoom stay rock solid though.
Action and war movies forced me to use Locktite on things that can rattle loose or vibrate loose, so I'm not surprised !
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post #3167 of 11992 Old 11-30-2017, 02:40 PM
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Action and war movies forced me to use Locktite on things that can rattle loose or vibrate loose, so I'm not surprised !
Lol! I hear ya! I've had to use some odd methods to deal with the bass wreaking havoc. With my manual lens Benq w7000 which I still use for 3d, I have to rig it up with toothpicks and velcro pieces to keep the lens in place!
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post #3168 of 11992 Old 11-30-2017, 02:47 PM
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Lol! I hear ya! I've had to use some odd methods to deal with the bass wreaking havoc. With my manual lens Benq w7000 which I still use for 3d, I have to rig it up with toothpicks and velcro pieces to keep the lens in place!
I had to brace and re-enforce my projector mount at one point, when I had my Lumis, to eliminate the projector vibrating during heavy LFE action. No such problem now, with an 85 lb. projector on 1" plywood mounted on brackets attached to two walls !
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post #3169 of 11992 Old 11-30-2017, 02:54 PM
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Nah, not at all 110% it only needs to be as good as his 9500 which shouldn't be a big ask given the 9900 should be improved.
JVC never said quality will be better, just a few software feature upgrades.

Nevertheless after all these years, they still have difficulty aligning the panels. JVC needs to invest more in manufacturing.
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post #3170 of 11992 Old 11-30-2017, 03:08 PM
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JVC never said quality will be better, just a few software feature upgrades.

Nevertheless after all these years, they still have difficulty aligning the panels.
JVC needs to invest more in manufacturing.
That's typical of all 3 chippers. I can't imagine that will be easier to do with native 4K chips when they become the norm. And 8K would have to be even worse. Ah, something to look forward to.
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post #3171 of 11992 Old 11-30-2017, 05:14 PM
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That's typical of all 3 chippers. I can't imagine that will be easier to do with native 4K chips when they become the norm. And 8K would have to be even worse. Ah, something to look forward to.
One of the setup tasks that I actually like. I had to do that with my first Sony CRT projector, and compared to that experience aligning my X550 was an easy task once I got used to the somewhat counter-intuitive menu process.

After about two hours I was able to align them to near-perfection..
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post #3172 of 11992 Old 11-30-2017, 06:00 PM
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One of the setup tasks that I actually like. I had to do that with my first Sony CRT projector, and compared to that experience aligning my X550 was an easy task once I got used to the somewhat counter-intuitive menu process.

After about two hours I was able to align them to near-perfection..
Well, using local fine adjustments you could get a JVC perfect too, problem is it messes up the color in the regions of correction apparently.
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post #3173 of 11992 Old 11-30-2017, 06:10 PM - Thread Starter
 
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Well, using local fine adjustments you could get a JVC perfect too, problem is it messes up the color in the regions of correction apparently.
I have yet to see the color shift on anything other than a test pattern.
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post #3174 of 11992 Old 11-30-2017, 06:25 PM
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I have yet to see the color shift on anything other than a test pattern.

Me too.

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post #3175 of 11992 Old 11-30-2017, 07:22 PM
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OK... so it sounds like one of possibly two things...

- your 9500 might be considered worthy of 20LTD status today. Maybe not totally, but certainly as far as the lens and convergence.

- the standards for the 640/x990/x9900 have drops compared to the last generation.

Given the serious price change from the 640/x95-/x9500 to the 640/x990/x9900, I won't say I expected to have the quality drift a little bit, but if it did, maybe that drove the price change.

I know my unit is not perfect, but I am at a loss regarding what I would get instead, if not the x990. And, I am still extremely impressed with the performance compared to my old vw90es and even the RS520. Maybe a perfect 620/x950?

Sorry the replacement did not pan out. We're all gonna miss your technical curiosity when it comes to getting the most out of the product.

I'm curious ... who is still inline for a 20LTD?
Try and see if your dealer will open the box and have the unit tested for brightness before shipping.. if it passes then have them ship it..
At this point thats how i would handle a new order...

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post #3176 of 11992 Old 11-30-2017, 07:23 PM
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I have yet to see the color shift on anything other than a test pattern.
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Originally Posted by TKNice View Post
Me too.
I suppose the question is then, is there a potential benefit to using the local adjustments just for "perfections" sake, when you probably can't even see it from the viewing area, with the possibility that there is some color irregularity (that you may never see)? Guessing not either way.
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post #3177 of 11992 Old 11-30-2017, 07:53 PM
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I suppose the question is then, is there a potential benefit to using the local adjustments just for "perfections" sake, when you probably can't even see it from the viewing area, with the possibility that there is some color irregularity (that you may never see)? Guessing not either way.

Well, in my case, without the fine adjustment, I can see a slight blue offset on white text in the upper left corner of the Kodi interface. Whole pixel adjustment does fix it but also introduces the same issue in the bottom right. We are talking about things here that I don’t see from either of my rows (13 & 17 ft) but can from maybe 6 or 7 ft and closer.

With the fine adjustment, I can make it perfect in both areas and I honestly can’t see any negative affects with color on patterns or real content.

Maybe if someone can tell me what to look for?

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post #3178 of 11992 Old 11-30-2017, 08:12 PM
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Lets play a little game!

Its called, guess which projector is which!

Projector A is bottom left, Projector B is top right in all the cross hatch images. They are overlaid, so just follow the cross and you will know you are looking at Projector A or B.

This is ALL over my screen... Many points.

And to be TOTALLY fair to the non sharp unit, I attempted to focus my Lens specifically on THAT projector, not the sharp lined one.

I should also say I didn't even have the camera on a tripod for this, I did it hand held, the difference in real life is much more pronounced than this.

Which is which!? Which would you keep ?


















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post #3179 of 11992 Old 11-30-2017, 08:58 PM
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Hey @Javs , while you have 2x X9900s, would you mind trying out a quick & dirty POC of double-stacking in regards to overall light output? E.g., can both line-up well enough (even with e-shift, 3D...), what kind of light output gain is achieved, how much is the black floor affected, etc.?

I'm trying to gauge if it would be at all worth it for large/AT/low-gain screens (especially for HDR/WCG & 3D).

Really sorry about your QA battles with these things...very frustrating, I know.
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post #3180 of 11992 Old 11-30-2017, 09:05 PM
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Lets play a little game!

Its called, guess which projector is which!
Javs, I don't know...neither one looks as bad as I thought one of them would. But if I had to pick based on sharpness alone, I would pick A, the bottom left.
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