JVC DLA-RS1 Owner's Thread - Page 28 - AVS Forum
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post #811 of 8767 Old 03-10-2007, 09:36 AM
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Quote:
Originally Posted by Pedro2 View Post

Fortunately I did not discover the projector craze until the week I handed in my tenure review file! But I have many years until retirement, so better pace myself and regulate this hobby...

Good luck, and best wishes!
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post #812 of 8767 Old 03-10-2007, 09:53 AM
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Quote:
Originally Posted by upnorth View Post


By the way convergence can and will differ from unit to unit and is also dependent upon the magnetic pull in your spot of placement and if you move the unit around a lot or in between showings, the convergence can be effected. It may also need adjustment again over time to keep it as close to perfect as possible.

Whoa !! That magnetic thing will spread like a grass fire around here.
Not so. Possibly your thinking of CRT but fixed pixel displays are not in any way affected by the earths magnetic pull.
We already have enough problems ....
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post #813 of 8767 Old 03-10-2007, 10:02 AM
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Yeah Jimmy, you gotta be careful with that magnetic pull from the earth. I've seen it rip projectors from their ceiling mounts and seriously injur or kill a few of my clients!!!

Deflecting a CRT beam isn't the only issue with these things, huh?

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post #814 of 8767 Old 03-10-2007, 10:04 AM
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post #815 of 8767 Old 03-10-2007, 10:05 AM
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Hope they all paid in full before getting beaned .
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post #816 of 8767 Old 03-10-2007, 10:06 AM
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Most of them had very good insurance policies!!!

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post #817 of 8767 Old 03-10-2007, 10:08 AM
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CRT's will Kill, Digi's ONLY put you in a coma.

Hey ? Where's Noah ?

I hope not counting Lumen's .
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post #818 of 8767 Old 03-10-2007, 10:18 AM
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Quote:
Originally Posted by D_B_0673 View Post

From the Ultimate AV Review just posted-

"I measured a peak contrast ratio of 8752:1 and a modified ANSI contrast of 139:1, both with the Lamp on Normal. (I also ran these measurements on the Sony Pearl under the same conditions, in Auto Iris 2, Low lamp, and obtained readings of 5949:1 and 133:1, respectively.)"

Something is obviously wrong with their equipment or methodology. Both the RS1 and the Pearl should have twice the modified ANSI CR. The odds of them getting both a bad RS1 and a bad Pearl are very slim.
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post #819 of 8767 Old 03-10-2007, 10:19 AM - Thread Starter
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Quote:
Originally Posted by Spizz View Post

An excellent review up on-

http://www.guidetohometheater.com/

Touches on some of the issues.

Thanks Spizz, added to first post. This is Tom Norton's full review.

Regarding the "bright scene fading" that he discussed before (a big concern of mine) he said

Quote:


the LCD and LCoS projectors I've reviewed before have also had a tendency to look a little faded on bright scenes as well, which reduced their punch and dimensionality. This effect is subtle on the best of these projectors, but never completely absent. Many of these displays were equipped with auto irises.

I noted this in my Short Take report on the JVC as well, but I also observed that the JVC suffered less from this bright scene fading than most LCD and LCoS designs I've seen, even those that like the JVC don't use an iris. A dynamic iris can greatly improve the depth of a projector's blacks in dark scenes, but once it opens up on a bright scene you're left largely with the naked, native contrast of the imaging chip and light engine.

While such fading isn't entirely absent in this new JVC design, I have found it to be more and more difficult to spot, particularly since the Sharp XV-Z20000 DLP was sent back to its maker and the opportunity for additional A/B comparisons thereby eliminated. I saw it rarely before; now it doesn't bother me at all. While some bright scenes initially looked a bit more saturated and three-dimensional on the Sharp compared to the JVC, I now find that the JVC's image, particularly on good high-definition material, offers plenty of depth and dimensionality.

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post #820 of 8767 Old 03-10-2007, 10:22 AM
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Quote:
Originally Posted by Dave Harper View Post

Bob, apparently there is a Service Menu according to Tom Norton in his review of the HD1. See below:



You may want to email him and see if he can check to see whether there are panel drivers in there

I have also verified that there is a service menu with the RS1. I don't want to repeat the code here, but unlike prior JVC projectors there were very few settings in the service menu.
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post #821 of 8767 Old 03-10-2007, 10:24 AM
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Quote:
Originally Posted by JimmyR View Post

Whoa !! That magnetic thing will spread like a grass fire around here.
Not so. Possibly your thinking of CRT but fixed pixel displays are not in any way affected by the earths magnetic pull.
We already have enough problems ....

A non-issue, unless you live in this neighborhood...

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post #822 of 8767 Old 03-10-2007, 10:25 AM - Thread Starter
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Is there any type of consensus on just how much of a reduction there is in lumens at the various throw ratios? This might be useful information that could be placed in the first post.
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post #823 of 8767 Old 03-10-2007, 10:26 AM
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Quote:
Originally Posted by Mark Petersen View Post

I have also verified that there is a service menu with the RS1. I don't want to repeat the code here, but unlike prior JVC projectors there were very few settings in the service menu.

What settings are available? Anything worthwhile?

Enjoy!

Mike
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post #824 of 8767 Old 03-10-2007, 10:28 AM - Thread Starter
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Quote:
Originally Posted by D_B_0673 View Post

From the Ultimate AV Review just posted-

Quote:
I measured a peak contrast ratio of 8752:1 and a modified ANSI contrast of 139:1, both with the Lamp on Normal. (I also ran these measurements on the Sony Pearl under the same conditions, in Auto Iris 2, Low lamp, and obtained readings of 5949:1 and 133:1, respectively.)



Thats not good at all... my feet just got a little colder about jumping on this now...

I don't know how concerned to be with these readings, since they appear to be pretty low for the Pearl as well. This implies that it may have something to do with the way he is measuring C/R and ANSI contrast. I hope.
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post #825 of 8767 Old 03-10-2007, 10:29 AM
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Just wanted to pass along an observation about the pixel size on the RS1. Pixels are small. Very small. Smaller than the Ruby. And the gaps between pixels are also smaller than the Ruby. In fact the gaps between pixels are just ever so slightly visible (that's how small they are) even with perfect focus. Nice!
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post #826 of 8767 Old 03-10-2007, 10:32 AM
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Quote:
Originally Posted by Cine4Home View Post

Hello together,


About deviation: I tested over 20(!!) serial units by now and they all were very consistent in contrast ratio. A contrast below 10000:1 is far from normal, really...


Regards,
Ekkehart


Thanks for the info Ekkehart. Did you happen to measure brightness on these 20+ units as well? If so, was brightness fairly consistent with these units and similar to your review numbers?

Thanks

JVC 3D: Been there, done that, bought a DLP
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post #827 of 8767 Old 03-10-2007, 10:33 AM
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Quote:
Originally Posted by santellavision View Post

A non-issue, unless you live in this neighborhood...

Damn, now I have to start all over again.
Ernie, this is a very serious thread, we're trying to count our little lumen's. Please, your distracting.
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post #828 of 8767 Old 03-10-2007, 10:34 AM
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Quote:
Originally Posted by lovingdvd View Post

Just wanted to pass along an observation about the pixel size on the RS1. Pixels are small. Very small. Smaller than the Ruby. And the gaps between pixels are also smaller than the Ruby. In fact the gaps between pixels are just ever so slightly visible (that's how small they are) even with perfect focus. Nice!

Wait... I'm confused... anyone else confused? Both have 1080x1920 pixels... JVC has smaller pixels AND a smaller gap? Something doesn't add up. How can that be?
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post #829 of 8767 Old 03-10-2007, 10:36 AM
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I'm also a PJ virgin . Brings me back... and makes me giddy. We're all a bunch of pubescent teens, anyways .

Krister
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post #830 of 8767 Old 03-10-2007, 10:46 AM
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Quote:
Originally Posted by erkq View Post

Wait... I'm confused... anyone else confused? Both have 1080x1920 pixels... JVC has smaller pixels AND a smaller gap? Something doesn't add up. How can that be?

I haven't checked specs but I'm guessing the JVC panels are smaller even though they are the same rez as the sony. So with the same number of pixel on a smaller panel you end up with smaller gaps.

EDIT:
So much for guessing...RS-1 has the bigger panels.
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post #831 of 8767 Old 03-10-2007, 10:56 AM
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Quote:
Originally Posted by KenWH View Post

I haven't checked specs but I'm guessing the JVC panels are smaller even though they are the same rez as the sony. So with the same number of pixel on a smaller panel you end up with smaller gaps.

EDIT:
So much for guessing...RS-1 has the bigger panels.

But even if the panels were smaller they are still projected to the same size and the SCREEN is where he's seeing the smaller sizes. Silly of me. My point doesn't really add anything to the discussion.
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post #832 of 8767 Old 03-10-2007, 10:57 AM
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Quote:
Originally Posted by Jason Turk View Post

And here in lies the problem. Measurements don't necessarily equate to a good picture. If you got the unit, and it looked gorgeous, but then had it measured and it tested out lower than you thought, what then? What would probably be the best is to hold your shipment until we get to the bottom of the cause for the discrepancies as I want to make sure you are happy (and everyone for that matter).

The problem here is that 'gorgeous' is a relative term. If a customer has a 5 yr old digital pj, the RS1 even with below par performance would look gorgeous in comparison. But doesn't it stand to reason that it would look even better if it performed as it should?

I think what many customers are saying is that for the money they want the RS1 to perform at it's best, not sub-par.
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post #833 of 8767 Old 03-10-2007, 11:00 AM
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Whatever JVC has done they have somehow improved the fill factor and that's a good thing.
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post #834 of 8767 Old 03-10-2007, 11:09 AM
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Quote:
Originally Posted by erkq View Post

Wait... I'm confused... anyone else confused? Both have 1080x1920 pixels... JVC has smaller pixels AND a smaller gap? Something doesn't add up. How can that be?


It is a head scratcher, unless the Ruby was on a larger screen.

I bet he wishes he could take that one back. I have felt that way once or twice.

My guess is that he meant to say that the pixels are bigger and the gaps are smaller.

Best Regards,
Doug
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post #835 of 8767 Old 03-10-2007, 11:23 AM
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I'm waiting for my specimen, HD1, in Denmark. I've started a project, involving a lot of pictures, so as to compare the performance of the HD1.

I've taken about 40 pictures, high resolution, of various scenes in the Black Hawk Down Superbit version. I got a Carrada BW 104" screen and first round was shown on a Z4, high bulb mode, the movie scaled to 720p by a Denon 3910. I got a bat cave room, black ceiling, walls and no reflection whatsoever.

When the HD1 arrives, I will take the pictures of the same scenes once again. This time scaled to 1080p by the Toshiba XA2 (in Europa XE1). Then I will take the same pictures, once again, using the PS3 and the Blu-Ray version of the movie.

The pictures are all from the first 15 minutes of the movie. A lot of dark scenes, with very bright objects entering and leaving, thus getting the Z4 iris to go crazy. Perfect material for showing the HD1's ability to show what it is worth and the amount of shadow detail. I hope to be able to show the results within 3-4 weeks.
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post #836 of 8767 Old 03-10-2007, 11:40 AM
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Is there anything better for adjusting pixels (for MC) than the 'crossing lines' pattern that is built into the RS1 (accessed from the 'Test' button on the remote)?
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post #837 of 8767 Old 03-10-2007, 11:52 AM
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Quote:
Originally Posted by millerwill View Post

Is there anything better for adjusting pixels (for MC) than the 'crossing lines' pattern that is built into the RS1 (accessed from the 'Test' button on the remote)?

Bill, purchase a copy a AVIA. It will have all the patterns you need for basic calibratiion including the "crosshatch" which is the best tool for adjusting convergence.
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post #838 of 8767 Old 03-10-2007, 11:57 AM
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Quote:
Originally Posted by JimmyR View Post

Bill, purchase a copy a AVIA. It will have all the patterns you need for basic calibratiion including the "crosshatch" that is the best tool for adjusting convergence.

Dont you need a 1080i/p pattern of some sort for most accurate results? I was told not to use AVIA on a 1080p projector for adjusting convergence.

JVC 3D: Been there, done that, bought a DLP
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post #839 of 8767 Old 03-10-2007, 12:01 PM
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Quote:
Originally Posted by Toe View Post

Dont you need a 1080i/p pattern of some sort for most accurate results? I was told not to use AVIA on a 1080p projector for adjusting convergence.

AVIA will do just fine.
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post #840 of 8767 Old 03-10-2007, 12:08 PM
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Any correlation between air shipping and ground shipping for MC? Are these units suceptable to problems due to being bounced around, or are they solid?
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