JVC DLA-RS1 questions answered! - Page 4

AArrrggg Jason I saw your original post!!!!

I hope you get your hands on a unit soon!

Crossing my fingers....

Truthfully, the Sharp is, well, a sharp projector. So if the RS1 holds true to being even equal to that, it will have a huge advantage to the competitors in similar technologies.

Adding th this point, the JVC online specs clearly say +/- 80%. That indicates that the shift can be up or down without inverting the projector. Typo, maybe???

JVC RS1 review, the trilogy

Mark have you seen the Sony SXRD A2000 RPTV by any chance? Its razor sharp. Curious if the RS1 provides a similarly sharp look.

I believe I am mistaken. Too many freaking specs to keep straight with everything I sell. I believe it can be upright as I am remembering a conversation I had with JVC at Cedia.
My apologies!

The JVC RPTV 1080p units are amazing. And well priced compared to it's competitors. All in all I have always loved what they can do.

Thanks Mark. I also look forward to hearing your thoughts about how the black level compares to the Ruby in your next write up.

Hi Mark

Great review! thanks very much, been waiting all day. Marantz has a new 6x color wheel, the sharp still use the 5x speed.

Mike

I thought I saw somewhere that the lens wasn't constant aperture. Constant aperture zoom lens are very big and very expensive. Tom (a truly great guy and a wealth of knowledge) does know better than I and if he says so, I believe him. Still I expect actual ANSI to be between 300 and 350. One of the reviewers stated that somewhere in one the AVS threads too. I think anywhere over 110"D will be dim. One can get used to dim, hell my CRT only lights up my 110"D at about 5.5 ft lamberts. and that is plenty bright for me in a totally light controlled black room.

A stacked pair at under $9K should be fantastic on a large screen.

Tom did comment that the ANSI wasn't official yet since they aren't production units, but he did guesstimate in the 300-350:1 range as you said. Still, that is very good for this technology.

5.5 ft lamberts on a 10" D ???

I found in my testing that the Marantz is the best single chip 1080p unit, taking price considerations out of the picture.

Uh, I think Mark was talking about ANSI lumens, not contrast!?

Crap. You are right. Well then I totally disagree with him but I will know soon.

I recently measure the lumens of my Ruby and was SHOCKED to find I was getting only 193 with 525 hours on the bulb near max throw. I would have bet it was much higher than that because the picture looks super bright on my 106" Firehawk. And that works out to just 8.xftL. So I'm very comfortable that at least for this size screen the RS1 fits the bill perfectly as far as lumen output goes.

Jason - Where are all the inputs on the RS1? I know you answered this before but I'm too lazy and tired to go hunt.

thanks,

He means 10 feet.

FYI

feet = '
inches = "

Thanks for sharing this. That was a great read.

I believe this is attributable to the super high contrast without having to use a dynamic iris because the whites can still be fully bright at say at or near 100 IRE while the black is still at its deepest level (at least as deep as its ANSI CR will allow).

Now, whereas with the Ruby, you would not get this affect because the whites would be dimmer due to the iris being closed down considerably. Yes some of this is made up for to a certain extent by the dynamic gamma but there's only some much brightness you're going to get out of it with the iris closed partially.

Speaking of which - one point I haven't seen discussed is that I think that the lack of a DI on this pj will make it much brighter than the Ruby/Pearl. With Ruby/Pearl and say medium APL (which many scenes are) the iris is partially closed which keeps the brighter parts of the picture less bright than intended. With RS1 without the DI will be able to display those parts at max brightness which will make the overall image pop more. Do you guys agree with this line of thinking?

Mark,
I'm sure it was stated earlier, but what screen were they showing this PJ on? Did the JVC guys talk about RS1/screen selection at all?

I think the joke went right over your head there...

Thanks Jason for your response. I am going to start building a dedicated Home theater in basement. So, it will have no light issues. Room dimensions is 17' X 28(or 29)'. Haven't decided on screen yet but based on reviews on this forum, it looks like it will be Carada but I am ready to go for better screens if needed to get my 138+" screen size.

I have time till Jan-Feb to own one but I need to decide which one soon so I can run the cables in the ceiling.

On medium APL scenes the dynamic gamma algorithms won't need to work as hard as they would on a low APL scene, so the ill effects of the DI (and as much as some will contest otherwise, any video processing will have at least some ill effects) will be less.

Where high native contrast wins out over DIs is on the rarer type of scene where you have a small number of things near max brightness on a low APL scene. You only have so much room for the dynamic gamma to work with before it runs out of tarmac, and the software has to make a damned either way choice of either increasing the DI's apeture (and having elevated blacks), clipping the whites, or giving an overall washed out picture.

But note that in your review, your found the ANSI CR of the Marantz to be only 450 +/- 30, not overhwhelming for a dlp. So it sounds like this spec will not be enormously more than that of the RS1 (if it does in fact approach 400).

Greetings all...

Just home from the West Coast and catching up on some reading here! It was really good to meet so many people from the forum and have a chance to hang out for a while. Also, thanks to all for the kind words, those 20's slipped in pockets were money well spent! :-)

A couple points of clarification...

1. The Sharp 20K does not have a DI...it has a 3 position iris that we normally ran in HC mode unless we were demonstrating the difference it black level when the projector was in HB mode.

2. We did have a Silicon Optix processor sitting on top of the HDDVD player that was feeding both the RS1 and the 20K, but was not turned on or connected...both machines were fed HDMI via a splitter. The HD10K in the other room did use the SO processor to get the proper AR for the Anamorphic lens.

3. The lens on the RS1 is manual zoom and focus, not motorized...the H and V offset is bi-directional, meaning you can adjust the image up/down/left/right. In other words, you could sit this projector right side up on a shelf, above the top of the screen and adjust the offset down as necessary...no need to invert the projector if using above the screen centerline.

4. All connectors are at the rear of the projector.

5. We did compare the Pearl side by side with the RS1 at night after the show closed...this was the first time I personally got to see the two units side by side and I will say that after considerable tweaking on the Pearl, the color and overall picture quality on the two was such that you might have thought you were looking at two RS1's or two Pearl's...this on a variety of medium to high APL scenes. With a total fade to black or a very dark starfield, the RS1 was noticeably blacker in any Iris mode and certainly as bright in a bright scene. The observations were made strictly using HDDVD source material, we didn't evaluate SD scaling or other factors, just colorimetry, brightness, black level and sharpness. There did seem to be a little bit of color non-uniformity showing up at the corners, but it was very minimal.

Thanks to Kei and her crew for having us over for drinks and an opportunity to show off the HD10K with the Schneider lens...it mesmerized a few people.

Cheers,

A JVC rep at the after party told me a combination of drops in prices on components and a huge ramp up in production (number of units they intend to sell) allowed them to lower the price as much as they did. I'm sure there are other factors as well, possibly profits from rear projection that may have compensated R&D efforts, but it sounded like those were the main reasons.

Also, there's some positive news for those looking to use an anamorphic lens for CH 2.35. One of the JVC reps said they're working with the software engineers to try and get the vertical stretch worked into the firmware, so you won't need an external scalar. Of course, these sorts of things sometimes fall through, but at least there's an attempt to get the necessary scaling on-board.

I had a great time at the after-party (thanks Kei and co) and it was good to be able to throw some questions at those JVC guys. The H10K was expertly calibrated, the color was jaw-dropping. I found out just how important color was to me, even more so than contrast ratio (which tends to hold the crown around here). I'm very much looking forward to seeing an RS1 - I only wish I was in the position to buy (from AVS) right now. However, it'll definitely be on the list when that time rolls around.