JVC RS4500 (native 4K laser projector)

[AVSCraig]

Mine is 9 feet wide and I am on mid laser and iris about -8 in SDR on a screen research acoustic transparent screen (with black backing behind it) gain should be about the same as yours.
In HDR I use mid laser and iris full open with the HDR color space, looks pretty impressive to me on 9 feet wide.

I'm guessing that on my 118" wide StudioTek 130 G3 2.35:1 screen I'm going to be able to close the iris down in 2/3 power too. Same with my 122" diagonal 16:9 Stewart Cima Neve.

I think I'll be moving my seating closer - don't tell my wife  ! 

[ozhdht]

I've also found on my SI pure white 1.3 150" scope, which is about 11.5" wide (but not filled completely in 2:35 due current throw distance is of current mount), that in mid SDR -7 or -8 Aperture gets things looking about right. I tested Force Awakens last night and found I was pretty happy with the image in Natural. I also got to test 3D with the beginning of Battle of the Five Armies, death of Smaug scene and aftermath. I was extremely impressed with the 3D capability, it's quite phenomenally bright and punchy and definitely the best projected 3D I've seen to date having come from VW1100 then RS600.

[AVSMike]

Mine is 9 feet wide and I am on mid laser and iris about -8 in SDR on a screen research acoustic transparent screen (with black backing behind it) gain should be about the same as yours.
In HDR I use mid laser and iris full open with the HDR color space, looks pretty impressive to me on 9 feet wide.

Your screen is very close to what I will be using. 9' wide EN4K.

[mark_h]

That's a pretty big screen - 83.4 square feet. 1600 lumens doesn't get you to much over 15 foot lamberts.

1600 lumens?  Is that because the iris is at -8?

My screen is 15' 2.35:1 and 0.86 gain.  I'm hoping to target a (constant laser) minimum of 14 fL, but was hoping to be working with ~2400 lumens...  1600 lumens gives me 11fL...

[lygren]

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.

[mark_h]

I´d also say that it needs to run in high laser mode and as such be placed in a technical room

Because of the noise?

[lygren]

Because of the noise?

It´s not very noisy in high laser mode, and the pitch / hum is pretty low in frequency. Still, I would personally not want that noise level inside my own cinema room...

[ARROW-AV]

It´s not very noisy in high laser mode, and the pitch / hum is pretty low in frequency. Still, I would personally not want that noise level inside my own cinema room...

How hot does it get? A simple hush box could be the answer, which may or may not require its own cooling/ventilation system depending on how hot the projector gets

[mark_h]

How hot does it get? A simple hush box could be the answer, which may or may not require its own cooling/ventilation system depending on how hot the projector gets

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...

[AVSMike]

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...

Good chance, that you would not have to fully close up your hush box. You will have to test it and see.

[mark_h]

Indeed.  Next Tuesday is my turn to play...

[stanger89]

Outputting SDR / 4K / REC709 / 10-bit video from a Panasonic UB900 player (no HDfury is needed after last firmware update by the way...).

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?

[DLCPhoto]

Outputting SDR / 4K / REC709 / 10-bit video from a Panasonic UB900 player (no HDfury is needed after last firmware update by the way...).

Are you certain about this?  I've been unable to confirm this anywhere else so far.  On the "other" forum, the official word is 1.51 as the latest firmware, without this feature.  At least one reports 1.69, but doesn't specify that SDR/BT2020 is a feature, and Panasonic reportedly denies the existence of this 1.69 at this point.

Sorry for the threadjack, but this is a potentially very significant development.

ETA:

Looks like great minds think alike - we were both posting the same thing, at the same time.
!

[jetsen]

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?

Indeed 4K SDR/REC709 is (was) always possible, there is and was no need for HD FURY to do this, so as far as I know there is still no possibility to do SDR BT2020 without the Fury.

if someone knows about the opposite to be true then please feel free to enlighten and provide a link with the official statement and firmware 

[jetsen]

I think I'll be moving my seating closer - don't tell my wife  ! 

I would never ever do that to anyone sir  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