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JVC RS4500 (native 4K laser projector)

Re: JVC RS4500 (native 4K laser projector)
« Reply #315 on: January 24, 2017, 11:23:07 AM »
OT - What Firmware update is that, I thought the UB900 could always do SDR/Rec.709 without an HDFury.  Or are you saying the UB900 can do SDR/Rec.2020 without an HDFury now?

Sure, but we were unable to get it to output 4K at the same time until we installed the last firmware, for all I know it might be another reason for it suddenly working... :)

EDIT: If you would want P3 and no HDR you still would need to use a HDfury... As for getting 4K outputted while doing SDR / rec.709 it seems this has been working all along so I guess it was just coincidal it did not work until firmware was updated at our end...
« Last Edit: January 24, 2017, 11:26:35 AM by lygren »
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AVSCraig

Re: JVC RS4500 (native 4K laser projector)
« Reply #316 on: January 24, 2017, 11:27:36 AM »
I would never ever do that to anyone sir  ;D wifes (at least mine) don't have a say in these matters  ;) she can paint my living room purple with green dots, I don't care but don't mess with  dads room  :-X :-X :-X

Hey - my wife is cool with my buying an RS4500. Sometimes you need to give a little to keep them happy. Hell, you might even need to watch The Notebook with them every few years ( not that anyone would admit to that ).  ::)

AVSCraig

Re: JVC RS4500 (native 4K laser projector)
« Reply #317 on: January 24, 2017, 11:35:50 AM »
I actually use a hush box in my cinema, but over the years I've kind of opened it up as projectors got quieter - first I removed the port glass (improved ANSI CR) and then the front and back "doors" (improved airflow, which meant I could turn off the noisier cold air feed).  I don't really want to go back to a closed box, particularly because of the port glass/ANSI issue...

My hope is that the extra noise is of the broadband type that disappears into the background rather than any kind of pitched whining.  My old Barco CRT used to scream when the image got brighter, yet, funnily enough I never really had a problem with it due to the wow factor of having a home cinema :)  These days my tolerances are much lower...

I'd guess no port glass is needed, but a way to move air out is always good. I use an inline duct fan to exhaust the hot air out. 

AVSCraig

Re: JVC RS4500 (native 4K laser projector)
« Reply #318 on: January 24, 2017, 12:05:00 PM »
JVC RS4500 demo at 10am today, if you happen to be in San Diego, CA

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Re: JVC RS4500 (native 4K laser projector)
« Reply #319 on: January 24, 2017, 12:31:36 PM »
I would never ever do that to anyone sir  ;D wifes (at least mine) don't have a say in these matters  ;) she can paint my living room purple with green dots, I don't care but don't mess with  dads room  :-X :-X :-X

My wife and I came to an agreement early in for the theater room. Said I could do whatever I wanted. So the first thing I did was paint it all black. Figured after that I have complete control. :)
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AVSCraig

Re: JVC RS4500 (native 4K laser projector)
« Reply #320 on: January 24, 2017, 01:22:25 PM »
A bit more testing;

- Light output is actually pretty decent. Certainly higher than the RS600, although not 1000 lumens higher as you´d need to dial down the iris to -8 to maintain dynamics on the Z1, but I´d say 2-500 lumens more (needs to be measured)...

- Colors and stability stellar... Outputting SDR / 4K / REC709 / 10-bit video from a Panasonic UB900 player (no HDfury is needed after last firmware update by the way...). Have not tested HDR / P3, but since screen is 14 feet wide I´d say those features would probably not be very usable... My guestimate would be that 10 feet width is the maximum for P3, and if you´d want to use today´s "TV HDR" as well; 5 feet max?? :)

- Laser dimming mode 2 seems more visible than mode 1. Need to test this more, but the dimming certainly does wonders in terms of dynamics.

- Sharpness and overall detailing is simply amazing, the V6 fabric really shines alongside this machine!! ;)

In summary I´d say sharpness and detailing are the two main characteristics differentiating this projector from the current RS-line. Although the Sony 4K´s are very sharp too, the Z1 seems even sharper. Dynamics are certainly good too, I really did not feel like it fell through in that regards either, and I´m a sucker for blacks... Not as good as the RS600 though, which is just amazing in terms of blacks and overall dynamics. So; good, but not best in terms of dynamics... Still, the added light output, the increased sharpness, and overall performance makes this a very nice unit indeed.

I´d also say that it needs to run in high laser mode and as such be placed in a technical room if you´re using a screen width of more than 10 feet since you do need to dial down the iris quite a lot (-8 or more) to get the dynamics flowing.

This is great info. I'm thinking that this projector will throw a reference picture on a 10' wide screen - which is what I have . Can't wait to see this this on my StudioTek 130 !

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Re: JVC RS4500 (native 4K laser projector)
« Reply #321 on: January 24, 2017, 03:06:42 PM »
Sure, but we were unable to get it to output 4K at the same time until we installed the last firmware, for all I know it might be another reason for it suddenly working... :)

EDIT: If you would want P3 and no HDR you still would need to use a HDfury... As for getting 4K outputted while doing SDR / rec.709 it seems this has been working all along so I guess it was just coincidal it did not work until firmware was updated at our end...

Or buy the Oppo. No HD Fury needed. But Oppo does not quite provide as good of an image, but I am pretty sure after next firmware update it will. Oppo is supposed to be adding the slider adjustment, like the Panny.
My Baffle Wall System: https://discuss.avscience.com/index.php?topic=124.msg902#msg902

Mike Garrett
AV Science Sales
585-671-2968
mike@avscience.com

JVC, Sony, Epson, Marantz, Denon, Yamaha, Stewart, Seymour, Screen Innovations, Screen Excellence, DNP, Da-Lite, Triad, SVS, Martin Logan & more.

AVSCraig

Re: JVC RS4500 (native 4K laser projector)
« Reply #322 on: January 24, 2017, 03:19:35 PM »
Or buy the Oppo. No HD Fury needed. But Oppo does not quite provide as good of an image, but I am pretty sure after next firmware update it will. Oppo is supposed to be adding the slider adjustment, like the Panny.

Considering that the Panny works now, and I have the Fury, I'll stick with that for the foreseeable future.

Re: JVC RS4500 (native 4K laser projector)
« Reply #323 on: January 24, 2017, 08:53:25 PM »
Really happy with my Panny UB900 + HDFury combo. Best of HDR and HDR to SDR conversion. I'm sure at some point Oppo will get things figured out and get to the same level or better than the Panny.
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Re: JVC RS4500 (native 4K laser projector)
« Reply #324 on: January 25, 2017, 08:52:18 AM »
I can't get over the feeling that i am losing some details in the black levels, both the Murideo pluge and the Masciola patterns resolve 17 and clip 16 so everything seems ok with test pattern. But compared to the Epson for instance i get more shadow detail.

I have set gamma at 2.2 but tried to push the black in the Gamma setting to +6, just by looking at the picture that seems to work out better for resolving shadow detail.


I will measure the gamma curve both with the slider to 0 and to +6 to see the results, does anyone has the same feeling about the black levels or am I just seeing ghosts?

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Re: JVC RS4500 (native 4K laser projector)
« Reply #325 on: January 25, 2017, 08:55:47 AM »
I can't get over the feeling that i am losing some details in the black levels

Calibration issue...?
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Re: JVC RS4500 (native 4K laser projector)
« Reply #326 on: January 25, 2017, 08:59:55 AM »
Calibration issue...?

No because I have calibrated everything like it should be, I am a certified ISF calibrator so that end should be ok ;-)

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Re: JVC RS4500 (native 4K laser projector)
« Reply #327 on: January 25, 2017, 09:03:55 AM »
No because I have calibrated everything like it should be, I am a certified ISF calibrator so that end should be ok ;-)

3D LUT or just standard controls?
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Re: JVC RS4500 (native 4K laser projector)
« Reply #328 on: January 25, 2017, 09:04:57 AM »
Have you tried different laser dimming modes?  Perhaps one of them is crushing blacks?
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Re: JVC RS4500 (native 4K laser projector)
« Reply #329 on: January 25, 2017, 09:05:28 AM »
3D LUT or just standard controls?

Standard controls.

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