JVC RS1 review!!! (of sorts)  

EDIT: This post has been updated with additional measurements and information.

After being asked to do the first virtual AVS interview at the Expo where you guys asked the questions and then I cornered the reps from JVC and got them to respond, it's interesting that someone has asked me to post the first anonymous AVS projector review- of the RS1 (EDIT: it's actually an HD1) no less!!! This is the info that I have so far and more will be forthcoming (probably after Christmas). Btw, this isn't a joke it is from a reputable source and someone who I can vouch for who doesn't want to post here.

Picture of the unit:


Picture of the unit label:



Note: Measurements below were measured at the middle of the throw and with 21hrs on the bulb.

on/off CR:
12000:1 middle setting (note: I assume this means OOB "natural setting")
13000:1 user1 setting. (note: after some adjustments to improve D65 tracking)

(note: no significant change in on/off CR with lamp setting).

Modified ANSI CR (using Greg Rogers methodology):
258:1 normal lamp setting.
260:1 high lamp setting.

lamp setting on high increases fan speed and noise noticeably.

Lumens:
637 lumens on high setting
535 lumens on normal setting

CIE x,y primary and secondary coordinates:
R 0.658 0.341 (rec 709 r - 0.630, 0.340)
G 0.297 0.688 (rec 709 g - 0.310, 0.595)
B 0.141 0.053 (rec 709 b - 0.155, 0.070)

C 0.209 0.326
M 0.326 0.155
Y 0.447 0.543

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Updated measurements:
Modified ANSI CR yields repeatably consistent numbers of 270:1 (273:1 max) at mid throw.

On/Off CR was remeasured using multiple instruments and many measurements (to make sure no samples were in error or that there was a significant deviation between readings). The repeatability and consistency between measurements and between instruments indicates that these are accurate numbers folks.

On/Off was remeasured at 12000:1 within a few percent each time (Initial 13000:1 reading may have been in error).

Modified ANSI and On/Off CR at various throws:
Max Wide
ANSI 285:1
On/Off 10100:1

At Max Tele Zoom
ANSI: 245:1
On/Off: 13733:1

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Verbal description:
"But OMG, the depth and the detail. And when TheaterTek ends and the logo comes back up it's this amazing graphic in a sea of black. I can hardly see the screen.

The Pearl looks just OK compared to this. I'll take 12000:1 without DI over 15500 with DI any day. And very very little corner brightening

OMG is it crisp.

I doubt anyone who has one on order is going to regret it."

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Additional convergence info:
Within 1/2 pixel in the center and consistent across the image

Shading:
OOB Shading/white field uniformity is not perfect, a little coloration is noticeable.

Yeah the spec is 700 lumens, 15000:1 on/off @ D65 with 300-350:1 ANSI CR being the rumor. FWIW, Cine4home confirmed the JVC specs. It's possible that it's just this particular unit. I know the reviewer is also double checking the results just to make sure but so far it does seem a bit disappointing. Enough so that I changed my avatar lol.

Rec 709 standard color primaries in x,y are:
R - 0.630,0.340,
G - 0.310,0.595,
B - 0.155,0.070

Reading between the lines it looks like these values match very closely with cine4home's RS1 review. The actual x,y values aren't available on their review but it's possible to get a feel from their chromaticity diagram. It looks similar to a Ruby.

As far as on/off CR goes, I totally agree with you that these numbers could change based on the calibration. Speaking of which, the calibration was straight out of the box JVC (which is D65).

I was mistaken the color was adjusted for the User1 setting (not out of the box as I stated earlier).

The ANSI measurement was done at the projector (probe looking directly into the projector) with the sensor close to the projector so room effects shouldn't make an appreciable difference.

Just to clarify it's actually an HD1 rather than an RS1.

I can't wait for Jason's review. Hopefully the lumens, on/off and ANSI will be higher.

The anonymous reviewer is continuing to check the setup so we'll see if the numbers go up. If the on/off CR were increased to get 15000:1 and the ANSI were increased by the same % it would yield 320:1. So there is hope that these numbers will get better.

Oh yeah and I posted some photos of the unit on post #1.

Yes!

Yes those are still terrific numbers. There is still a possibility for improvement. Hopefully the reviewer will provide some comments about the image when he/she has a chance. I'm also hopeful for more info on the shading and convergence....

Yes this is tremendous progress for DILA. Amazing progress for any 3-panel technology even.


It sounds like 20k:1 is the theoretical limit for on/off CR with the current panels and wire grid PBS. ANSI is a good question though. I'm not sure why ANSI CR seems lower than DLP while on/off is higher. Some of it was due to light leakage into the substrate from adjacent pixels which has been improved/reduced with the new light blocking layer between pixels. Switching to a digital backplane also removes the capacitor under each pixel which also helps to mitigate the problem because stray light can't hit the semiconductor and create an electron-hole pair and erroneously bias the pixel. I'm not sure about the other reasons though, any ideas?