Official JVC DLA-RS46 / DLA-X35 owners thread - Page 17

Kraine where are you taking your lux measurements from? The light reflected from the screen, directly at the screen or at some distance between the projector and the screen?

And anyone considering doing the update or not, like myself would be doubly interested.

the reason I think the post firmware update is going to be the same as the 4810 is this recent review showing the X35 vs. the HW50. This is exactly how it looked with the 4810 vs. HW50.

The RS46 before the firmware had over 900 3D lumens, the HW50 is a bit over a 1000, so they were relatively equal in perceived brightness (before the glasses). The 4810 was dimmer (~560 lumens vs the Sony @ 1000)

In your opinion is the loss in brightness worth it to reduce crosstalk? And my RS46 is a crosstalk reduction control, does it do nothing? I regret not getting the 3D emitter immediately so I could test for myself.

I'm a 3D brightness fanatic, you might be asking the wrong person.

I would check it out first and see what you think. There's still some 3D movies I'll watch on my RS55 which is basically identical in 3D performance as the RS46 / pre-firmware. Movies like Avatar, Spiderman 3, etc look great on the pre-firmware RS46. It's mostly the animations where the crosstalk stands out since it's susceptible to light on dark ghosting which is prominent in these movies.

You can always send it in at a later time if needed.

edit: the crosstalk control on the pre-firmware RS46 does very little if anything to help. With the RS4810 firmware, it makes a noticeable change in brightness (560 lumens @ CT 0, 800+ @ CT 8). When increasing the brightness on the 4810, I could see more crosstalk. Very little though at 0.

Shame the fw update doesn't make it adjustable as on the 4810, because on the RS40 some movies had a lot of crosstalk and others had almost none. I wonder if the brightness difference would be the equivalent to setting the lamp to low. If so that could be a good indicator as to whether or not I can stand the brightness reduction. I am on a 147in hi power screen btw.

Sensor directed to the projector in the field of the screen.

wow, I thought my 142" HP was big. It's not just a reduction in brightness, it appears other PQ elements are being tweaked to reduce the ghosting.

I think the compromise post update (assuming it's the same as the 4810) is that the CT controls can be tweaked to increase the 3D lumen output and you could adjust this 'per movie' depending on your brightness preference.

with the CT @ 0, I was still wanting more 3D brightness through the glasses, even on the HP. But crank it up a few notches and it looked pretty good with just a bit more crosstalk.

So you think the update does what I'm talking about? Increasing brightness while also increasing crosstalk?

I think it will if it's like the RS4810. Kraine has the X35 update, he can let you know if this is the case.

Kraine?

Just an update: I've checked my Lux reading at 122 hours and I'm getting 95 Lux after it has been on for 3-4 hours tonight. That makes a 7% reduction in light output from new. Not sure what's happened to Kraine's X35 but mine seems to be holding up much better. It's still reading within 3dE at 100% too.

It's the opposite the new firmware make ghosting almost vanishing. You can check the resultst before and after here :

http://www.audiovideohd.fr/tests/351-JVC-X35-5.html

The question he was asking is in regard to 3D lumen output. Does the X35, post-firmware drop the lumen output from before the update?

The 4810 has a 300 lumen swing between CT settings 0 and 8. The RS46 before the update didn't not change lumen output when adjusting the CT controls.

Is there really this much of a delta between the post-firmware X35 and HW50? This is how the 4810 appears next to the HW50 in an A/B stack.

Having gone from a pre-firmware RS46 to an RS4810, I can give you my opinion. The pre-firmware crosstalk on the RS46 was horribly, terribly bad...so bad that regardless of brightness I doubt I would've even tried watching 3D on the projector. Crosstalk on my 4810, by comparison, is virtually absent. If the post-firmware RS46 performs like the RS4810, then the firmware update is a no-brainier IMHO. I'm pretty sure zombie has a different opinion though.

In the comparison thread, I mentioned that the crosstalk is noticeably reduced in exchange for a reduction in lumen output and a change in the overall PQ of the image. Something with the contrast appears to have changed.

The pre-firmware 46 was ~900 lumens, the 4810 is ~560 with the CT @ 0 and ~850 with the CT at 8.

hopefully someone with the post-firmware update can do a quick check on a 100% pattern in 3D mode. Based on the X35 vs. HW50 german review, it looks like the post-firmware update is the same as the 4810.

What size and type screen are you using?

Hopefully we'll get a clear answer from Kraine on this, I've sent him a PM as well. Heh, any chance anyone on JVC tech support could field this one?

110" diagonal 16:9 Carada Brilliant White screen (1.4 gain), 12.5 foot throw.

Hmm, well if you believe Projector Centrals calculator my screen is still brighter than yours. Really wish Kraine or anyone else whose done the firmware could answer some simple questions!

iris-002w.jpg 188k .jpg file Can anyone explain why the iris in the X-35 is shaped like a cat's eye?

Another try with the image properly attached

Hs anyone tried the Samsung glasses yet?

I use the Samsung SSG-4100GB glasses and they work fine with the JVC RF emitter on my RS46.

Great to know, thanks

The firmware update offer a noticeable 3D improvement just check here at the bottom of the page the 3D pics (before and after)

http://www.audiovideohd.fr/tests/351-JVC-X35-5.html

About the brightness I can only say that after 50 hourd I have lost 23% power in 2D.

kraine : "With side by side still images, you will see more of a difference, than you will when running actual source material"


it's probably the reason why you can see big differences (?), but sds its not really important since it's generally not as good as bluray 3D...

With my RS45/X30 I can also achieve minimal crosstalk by simply reducing the contrast setting in the menu. Maybe this is something that JVC is aware of and they simply made a firmware for the RS46/X35 where this reduced contrast is built-in. It definitely impacts brightness and pop negatively but reduces ghosting to almost nothing. If that were to be the case here, then JVC have not 'really' done anything to improve the situation.

Although, seeing as the native contrast of the JVC is much higher than that of the Sony or Epson, it would be fair of them to do so imho, but obviously judging from the screenshots they are nowhere near the brightness of the Sony, which (assuming levels of crosstalk are equal between the two) still puts the Sony on top in that respect.


Zombie, may I ask at what CT setting the X35 in the A/B-stack setup was when you took the screenshot?
Was the level of crosstalk at that time equal/better/worse than the HW50?

I have the new RS46 installed and the convergence and focus are much better. Focus at the corners is not as good as the very center of the screen, in fact the top 2 thirds of the screen are better focused. I believe this is to be expected, especially considering the amount of vertical lens shift I have to apply. All in all, I'm very pleased. Thanks again for the bid of confidence in sticking with the RS46.

My wife thinks I'm nuts and I'm starting to agree! 4 months ago I had an RS40 and was happy with it other than the bulb was getting noticeably dim. Even though JVC sent me a new bulb, I went down the path of trying to find something better for less than 3K. I auditioned a BenQ w7000, Panasonic AE8000, Epson 5020 and finally RS46! Some of this is costing me extra money too! But now that I've got what appears to be a properly assembled RS46, I realize I probably should have just stuck the new bulb in my old RS40! :-)

I got my RS46 on Wednesday and have put over 20 hours on it over the weekend, I must say I am very glad I got rid of the RS40 and it's endless bulb drama(I went through 2 bulb deaths, and JVC informed me the next time would require sending it in for service). I'm surprised how much sharper it is than my RS40 was(to the point I was wondering if I had not focused the RS40 properly, but I checked it every now and then), it really doesn't bode well for broadcast HD, but Blu Rays are glorious. With a 4000 hour lamp life I no longer feel self conscious about using the bulb for everything. I am grateful mine doesn't have any non uniform focus issues, convergence, dead pixels or streaking. Now if I could just decide whether to send it in for that 3D firmware update.