JVC DLA-HD250 new entry level DILA - Page 4

If the HD250 is an RS10 in matt black case, why are the specs for the RS10 32K:1 and the HD250 are 25K:1? Is it simply that JVC has not indicated that you can get up to 32K:1 with the HD250 by stopping down the iris? I think that was the case with the RS10, correct?

Where are the air intake and exhaust for the RS10 / HD350 and HD 250? How much space is needed on the sides and the back?

I wonder how much blacker the blacks are on the RS40 compared to the HD250? I mean, how much difference is an extra native 25,000:1 native contrast?

A quote by GaryB of JVC UK when asked the same question on AVForums:


My guess is that they've downspeced the HD250 to further distance it from the RS40 and possibly to make it seem like a different model to any previous one as they've not previously made a 25,000:1 CR model.

The air intake is on the front right as you face the lens and the air outlet on the side left as you face the lens.

Is there a pixel alignment feature? I know ther qc is probably decent and it wouldn't matter too much, but it's been a feature in the past.

Gotcha. Thanks for the feedback. Another AVS member sent me a link to the RS10U owners manual. The air outlet looks like it occupies the left side at the middle of the chassis. The owners manual points out you should place the projector almost 8 inches from a back wall.

I've checked my throw calculations and I can most likely use my prismasonic lens with either this HD250 or the Mits HC7000. My only concerns now are with sharpness and colour decoding. Colour is a personal preference and there are outboard CMS solutions available, and since the HD250 is a lower priced unit, an outboard CMS is a reasonably affordable option, IF one finds it necessary. I hope to hear more back from HD250 pioneers as to the sharpness. Reading the RS10 thread and RS10/HD350 reviews has generally made me feel that people were fairly happy with sharpness. Ultimately I would like to see one in person. The last high-contrast PJ I had in my setup was an Epson 1080UB Pro and I found it wierdly soft. I thought I read somewhere that the JVC RS10 was not as sharp as some of the newer Epsons (6500 UB for example). I'll keep searching for a local RS10 (or soon to be HD250) owner who wants to show off their PJ.

So being an entry level JVC LCOS PJ, where do we figure the HD250 will fit compared to the RS1, RS1x and RS2? I assume the RS15 was just an updated RS10? Is the HD250 essentially a replacement for the original RS1/RS1x?

There is in my HD350, but it's largely irrelevant as it seems to be set already to the best alignment and it only allows a 1 pixel movement anyway (rather than some of the Sony ones that do a 'software' pixel shift.


The HD350/RS10 was a replacement model for the HD1/RS1 so it kind of fits above the RS1, RS1x and RS2. However some say that the RS2 has a better contrast than the HD350/RS10 as it achieves this without the manual iris that the HDxxx models have. If this helps.

I meant to say that I found my HD350 significantly sharper than the AE3000 that it replaced, but my AE3000 was a particularly poor example with uneven focus across the screen and visible uniformity issues (which I managed to adjust out to some degree, though it was never as good as the HD350).

Ok, that gives me an idea of the lineage of the RS10. Sounds like sharpness is fairly good overall. I'll hopefully have a look at an HD250 and see the sharpness myself.

Does the HD250 have a 12v trigger?

Any motorized lens memory like the AE 4000 ?

Teecue

Ever since Panasonic introduced smooth screen I haven't found their pj's to be as sharp as I'd like. Granted they improved the smooth screen over time. Mitsubishi and some others chose Micro Lens Array to reduce the screen door effect. I found with 720p and now 1080p I don't notice screen door and the slightest defocus always cured sde without softening the picture. Of course with LCOS sde is no longer an issue.

Well, I imagine people will be getting HD 250 this week. Let's hope we get some more reports on the colour decoding and image sharpness etc.

Is last year's HD 350 the same as the RS15 or RS25?

I have owned three different JVC lcos machines and I have never had an issue with dust blobs. Seems to be an issue with LCD machines although I know it still exists,its not a prevalent as it used to be

By the way, our HD-250s are coming in so we will have a quick turnout around on them

As for the issues with lack of features, this is JVC entry level projector and its well priced. People paid a lot more for the RS-1,2,10 and RS15 series projectors and you will probably get the same or better picture. The auto lens are great, but lets be honest, unless you do the poor mans 2.35 , once you set the lens, you wont have to play with it again. CMS would be nice, but a good grayscale calibration will do wonders for your picture and CMS isnt necessary

Well, two sayings come to mind after my pulling the trigger on the HD250. First from Vito Correlone "We'll make him an offer he can't refuse".. Made the mistake of calling Jason at AV Science and that's what happened.
Second - Old Irish saying - "May you be in heaven half an hour before the devil knows you're dead". If I don't have this up and running before the wife sees it (so she can see how good it looks) I'm dead (or severely wounded).
I've been using a Mits HD1000U (only 600 hours) in a dedicated media room and have been stalking the Panasonic AE4000 forum and the Epson UB8500 and UB8700 forums and wanted to see what might come out of Cedia. Never thought I could own a JVC ($5000 and up is out of my league). Now the fun begins.. Hope to have it by the weekend (they say they're coming into stock now).. If I never post again please check the obits.

After mounting the HD250, will need a suggestion on screen material. Light controlled, 13-14ft throw, at this point DIY 16:9 - 106" diagonal white professional material screen with 1.0 or so gain. Don't want to change unless I need to. Don't need to give more ammo to the better half. :-)

dallas - you may want to do what I did when I was deciding which screen material to buy - simply call up the manufacturers and get a bunch of free screen samples. Then try them out and make your own call - you cannot do better then seeing how they perform in your own room.

Can this be decent enough with tolerable brightness in a dark room for a big screen of 130" diag or more?

I was poking around on projector central, does anyone have a projector calculator for this projector? I am interested in upgrading my Sharp 12000 mkII, I need to make the hop to 1080p!!

Thanks in advance!

Use the projector calculator for the RS10.

Thank you!

For screen materials, you would do the following

white 1.3 gain screen if you have no ambient light and dark walls, ceilings and carpets
white 1.0 gain - same as above except it better be a dark as a cave
grey screen - lots of ambient light

If you have no ambient light, but light color walls, gray maybe the way to go but i kind of like white even though the picture will be affected by the light bouncing off the walls back to the screen

Dalite HP is a great compromise. Its white, deals with ambient light and white walls really well. Has high gain if the projected is table mounted but lesser gain if ceiling mounted

Come guys, someone must surely want to talk about this projector

I will be talking lots when I get mine!!! I ordered it on Friday from a local dealer up here, which although paying more than the US, it makes it easy for me. He is hoping to get it in a couple of weeks (I am #1 on his pre-order list).

Being my first projector, I still have a lot of unknowns (screen size/gain/etc...), how and where to mount it (bought a chief RPA-233 mount from the same dealer). The plan is to get the projector, see what distance I prefer and see what size I like it at ... somewhere around 106" most likely.

I am slowly getting the rest of the room completed to a point where when the projector arrives I can hook it up (even if it is just sitting on a table at first). The room is 11x22, in a basement with no windows, so I have a decent setup. Furniture is already in place, with 2 rows ... first being about 13 feet back.

I never thought I would be able to afford a JVC, and it is a slight gamble buying something you haven't demo'd, but I am confident this will be a winner.

the funny thing about buying JVC projectors is that for the most part, most people buy them without ever seeing one live. This has been true since the original G10 and G11 models. Problem is that they used to be sold only by the commercial side which really doesnt have stores where they show it and now that they have a consumer line, most brick and mortar stores dont demo it

Have you calibrated it, and, if so, how bright is it?

Just wondering how the PQ from the hd250 would compare to the AE4000? Anyone know? I know that the AE4000 CR is with a dynamic Iris and the HD250 is native. Also, the AE4000 is lcd, so I assume its kind of like comparing apples to oranges, but maybe someone would have and idea and/or opinion?

-Sean

I have added this to my compare list at projector central, but the thing that I am concerned about is the 1000 ansi lumens of the HD250 compared to the Epson 31000 (1200), Mits HC6800 (1500) and Panny AE4000 (1600). Is there something I don't know about the brightness/lumens of these? I will be projecting from around 16' onto a 133" Da-lite HP screen.

I upgraded from a three month old AE3000 (one of the first in the UK) to a HD350 (= same as a HD250 ). I had a home demo by my dealer and we compared the HD350 and HD750 to my AE3000. The dark scene performance was noticably better and the image was sharper too (though I think my AE3000 was a poor example in this regard as my previous AE2000 was actually sharper). The HD750 was better again, but not so noticable in my room and not enough to justify the extra £2k or so. While the AE4000 claims a bit CR increase over the AE3000, this is in unusable Dynamic mode (just to get the specs looking good if not the actual image ), I believe that the actual CR in Color 1 mode is pretty close judging by Cine4home reviews, so little real improvement between the two models IMHO. Therefore I'd still say the HD350/250 is a better buy than the AE4000, particularly as it has a sealed light path, so no dust blob issues and the uniformity is much better too.


Yes, you're comparing apples to oranges my friend. The 1600 lumens of the AE4000 is in dynamic mode, which has terrible colours. The HD250/350 lumens is pretty much what you get when calibrated, so in practice the HD250 will be brighter than the AE4000 (another reason I changed to the HD350 as the AE3000 couldn't light my 112" 2.35:1 screen well enough and I'm not a lover of an overly bright image). In 'accurate' colour 1 mode the lumens will be nearer 500 or so on the AE4000. In fact if you find the HD250 is too bright, then at least you can close the manual iris down and gain extra contrast rather than resorting to ND2 filters.

PS.My screen is based on a 128" diagonal 16:9 Beamax model (just extra masking to reduce the height). It's lower gain at 1.5 yet the HD350 could light it up without having to fully open the iris when I used to zoom...I think you'll be fine with a 133" HP, you'll probably be able to close the iris right down for best contrast.

Hope this helps.