JVC NX5 vs NX7 on 80" - AVS Forum | Home Theater Discussions And Reviews
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post #1 of 40 Old 03-08-2019, 11:50 AM - Thread Starter
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JVC NX5 vs NX7 on 80"

I Just ordered the NX5. My dealer is trying to convince me to upgrade to the NX7.
Will I notice the differences on a mere 80" Stewart Studiotek 130?

Also, what scene in what BD can I use to appreciate the difference? My dealer said he would set them both up at his shop for me to compare.

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post #2 of 40 Old 03-08-2019, 12:37 PM
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Why not just buy a LG 77" Oled???

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post #3 of 40 Old 03-08-2019, 12:41 PM
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Originally Posted by MJ DOOM View Post
Why not just buy a LG 77" Oled???
I second this. I understand if price (or space for a bigger screen)is an issue.

Is your screen 80 in diagonal or width?

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post #4 of 40 Old 03-08-2019, 01:23 PM
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At that size, my first pick would be the OLED. Second pick would be the RS2000. I will have to say, the 2000 would provide a great projector image at that size, but still will not have the contrast of OLED.
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post #5 of 40 Old 03-08-2019, 01:47 PM
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I have an RS2000(NX7) but I have a 130" screen. At ~80" I would go for an OLED in a heartbeat. If you are dead set on a projector the RS2000 will have better contrast than that RS1000 and better color with the included color filter. The color filter decreases the light output but at 80" you won't be missing it.
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post #6 of 40 Old 03-08-2019, 02:08 PM - Thread Starter
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Quote:
Originally Posted by MJ DOOM View Post
Why not just buy a LG 77" Oled???
Wall Real estate. I have an electric drop down screen. The screen blocks windows actually.

Quote:
Originally Posted by Mike Garrett View Post
At that size, my first pick would be the OLED. Second pick would be the RS2000. I will have to say, the 2000 would provide a great projector image at that size...
So even though the screen is 80" diagonal, the contrast is appreciable? Is there a specific scene I can see this appreciation on? As the X7 is a little above my comfort zone of price. But it's not that much more so I thought it would be worth investigating.

I also thought of the irony. That a fancy schmancy PJ's is probably not as good as good as a good TV.

I'm in and out when it comes to research and last I bought a PJ was 8 years ago so that was the last I researched video tech. So I guess OLED is the best of 2019. Best news I heard all week!
As the rollable OLED will be perfect. My screen actually blocks a bench bay window. So this lg-OLED65R9PUA-signature-oled-4k-tv is the perfect solution. Just have to wait for the 75" and not be a million bucks. I am hopeful for 5 years? Too optimistic?

I can't believe I never even dreamed of this rollable solution. Whoever even thought of this, kudos. The one who thought of this exact solution is far greater than the engineer who created it. Art precedes science again.

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post #7 of 40 Old 03-08-2019, 02:21 PM
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I would buy a 77" OLED and look at solutions that lift TV up and down. With projector at 80" you are looking at same price as OLED TV, but OLED will beat projector any time at everything. The only benefit that projectors have at this time is large size, you remove that criteria and they are at disadvantage on all accounts.
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post #8 of 40 Old 03-08-2019, 02:30 PM - Thread Starter
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I just googled the contrast ratio of OLED: 1,000,000:1
The X7 is 800,000. That's pretty close. Maybe I should get the X7 just because it's a mere 200,000 / 20% difference. Hmmm

still, I'd rather see the difference. Anyone can recommend a scene?
Some scenes contrast is not important is my understanding. So for those scenes I guess the X7 & X5 are equals.

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post #9 of 40 Old 03-08-2019, 02:34 PM
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With your 80" screen you can get a ton of light on the screen. The NX7 gives you a colour filter that you can afford to engage and you can use the manual iris to get better contrast on you screen in SDR and still have plenty of light. You will start at around 80 fL so even with the colour filter you will have over 60 fL for HDR. Should look spectacular.

I agree an OLED will give a better picture at that size but the roll-able versions will be obscenely priced for a loooooonnnnng time.
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post #10 of 40 Old 03-08-2019, 02:37 PM - Thread Starter
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Quote:
Originally Posted by avsBuddy View Post
I would buy a 77" OLED and look at solutions that lift TV up and down. With projector at 80" you are looking at same price as OLED TV, but OLED will beat projector any time at everything. The only benefit that projectors have at this time is large size, you remove that criteria and they are at disadvantage on all accounts.
I have this whole custom library & cabinets. I just don't have any where to put the lift. It's a beautiful room just not so big ass tv friendly. For that matter not acoustically friendly either.

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post #11 of 40 Old 03-08-2019, 02:39 PM
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If you have the funds, sure go for NX7. At 80", NX5 should be plenty bright though, as it's going to be a fairly concentrated beam. What's the throw distance?
As far as OLED vs projector there are more factors than contrast though. OLED will produce much higher lumens, and they don't get affected by the ambient light. So OLED will produce much better HDR picture. But in any case, if you are limited by the room setup, you have to work with what you got. JVC is a fine choice and compared to Sony at the same price range, much brighter. Good luck!
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post #12 of 40 Old 03-08-2019, 02:56 PM
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In a non-ideal room (any ambient light, light colored walls) I don't think you'll see much contrast benefit from the NX7 over the NX5.

Last edited by mattztt; 03-08-2019 at 04:17 PM.
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post #13 of 40 Old 03-08-2019, 03:06 PM
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Quote:
Originally Posted by CaptCapitalism View Post
I just googled the contrast ratio of OLED: 1,000,000:1
The X7 is 800,000. That's pretty close. Maybe I should get the X7 just because it's a mere 200,000 / 20% difference. Hmmm

still, I'd rather see the difference. Anyone can recommend a scene?
Some scenes contrast is not important is my understanding. So for those scenes I guess the X7 & X5 are equals.
OLED has absolute black as it shuts down individual pixels to show true black and it should have infinite contrast not 1000000:1, so its not just 20% better than the NX7.
The NX7 in a well treated room will give great image and contrast but the OLED is excellent in any room and light conditions.
the only negative of an OLED is probably burn-in but its getting a lot better in latest models.

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post #14 of 40 Old 03-08-2019, 03:40 PM
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Quote:
Originally Posted by CaptCapitalism View Post
I just googled the contrast ratio of OLED: 1,000,000:1
The X7 is 800,000. That's pretty close
The N7 is no way near 800,000: in the real world!

At or near 80" a panel ( OLED) will hands down better ANY projector in so many ways....

A projector on such a small screen size just doesn't make sense..
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post #15 of 40 Old 03-08-2019, 03:57 PM
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The nx5 only has one iris, and on 80" 1.3 gain, it might be too bright for SDR. That's around 60-70 fL on low lamp with the iris open!

The nx7/rs2000 has two iris's, so you could clamp the lens iris down to get superior contrast while still leaving DI on, AND engage the color filter for 100%+ of the P3 gamut, which will reduce the output even more. On HDR, you could still use the filter and get a spectacular image, but still not as good as an OLED.

I would definitely go with the NX7/RS2000 if you absolutely can't do an OLED with a lift of some kind.
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post #16 of 40 Old 03-08-2019, 04:20 PM
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There is nothing you need to see outside that an OLED will not provide. Get an OLED, get a nice cam for the window and display the cam image (of outside), on said OLED. Problem solved.
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post #17 of 40 Old 03-08-2019, 05:09 PM
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With an 80" screen is not about which of the two is better, is more about that the NX5 won't work as you surely need the dual iris system of the NX7 for SDR content. Otherwise you won't be able to bring down the lumens for SDR content and the picture will be overly bright. Not to mention that your Stewart screen has 1.3 gain which makes the NX7 not the best option and more like the only option.

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post #18 of 40 Old 03-08-2019, 06:10 PM
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Post a pic of your room/entertainment set up?

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post #19 of 40 Old 03-08-2019, 06:38 PM
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I think this may be the answer you're looking for....

https://www.lg.com/us/tvs/lg-OLED65R...ure-oled-4k-tv
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post #20 of 40 Old 03-08-2019, 06:41 PM
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As everyone has said, if you are going with a projector, you almost have to get the NX7 with that screen size (as backwards as that sounds). You will need the manual iris, which is only available on the NX7, in order to get comfortable light levels on most material with only an 80" screen.
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post #21 of 40 Old 03-08-2019, 09:02 PM
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Quote:
Originally Posted by mattztt View Post
In a non-ideal room (any ambient light, light colored walls) I don't think you'll see much contrast benefit from the NX7 over the NX5.
This. All of this.

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post #22 of 40 Old 03-08-2019, 09:03 PM
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As everyone has said, if you are going with a projector, you almost have to get the NX7 with that screen size (as backwards as that sounds). You will need the manual iris, which is only available on the NX7, in order to get comfortable light levels on most material with only an 80" screen.
NX5 has manual iris control, along with auto 1 and auto 2. Just like the previous 590R did.

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post #23 of 40 Old 03-08-2019, 09:16 PM
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post #24 of 40 Old 03-11-2019, 08:59 AM
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Originally Posted by RaceCarDriver View Post
NX5 has manual iris control, along with auto 1 and auto 2. Just like the previous 590R did.
But it only has a single iris. You can either clamp it down to -15 manually OR turn on the auto 1 or 2, and neither one will allow you to get the brightness down below 35-50 fL with SDR material. This is way too bright, and the black floor will be horrible as well.
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post #25 of 40 Old 03-11-2019, 03:17 PM
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dkersten, I was under impression that bulb iris cannot be controlled at all. Whereas lens iris, which N5 has, can be capped at certain value and Auto mode would still work like normal up to that setting.
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post #26 of 40 Old 03-11-2019, 04:41 PM
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Unless you're going to watch from 7 or 8' away, and or plan to use the pj on a much bigger screen in the future, why even get 4k?

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post #27 of 40 Old 03-11-2019, 05:39 PM
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Originally Posted by avsBuddy View Post
dkersten, I was under impression that bulb iris cannot be controlled at all. Whereas lens iris, which N5 has, can be capped at certain value and Auto mode would still work like normal up to that setting.
If you "cap" it at the max, then it is as closed as it can get, and won't do anything more. It is already closed all the way, right? And if it isn't closed all the way, then you will still have scenes up in the 60fL range for SDR with no way to make them dimmer. That is simply too bright. At least on the RS2000 you have two iris's so you can clamp it down to -15 and still have all the dynamic contrast range, AND you can engage the color filter and drop your output another 25%, bringing it into the 15-30fL range for SDR, which is far better for his screen.
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post #28 of 40 Old 03-11-2019, 10:31 PM
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Quote:
Originally Posted by dkersten View Post
The nx7/rs2000 has two iris's, so you could clamp the lens iris down to get superior contrast while still leaving DI on.


I don't understand why people keep saying this like you can't do it with the NX5.

You can certainly clamp down the single iris on the NX5 and still engage Auto DI.

If you for instance clamp down the NX5 iris to -7 (about half way) and enable Auto DI, the iris will move auto between -15 and -7.

On the NX7, there are 2 iris, yes. But you can't just clamp down the lamp iris. There is only 1 iris control, and it alternates closing down the lamp iris, and then the lens iris every other step.

Quote:
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And if it isn't closed all the way, then you will still have scenes up in the 60fL range for SDR with no way to make them dimmer.
No, it will be nowhere near 60fL.

See this review of the NX5:

https://translate.google.com/transla...s%2F%3Fp%3D297

It was measured on a 110" screen and with iris at -15, in low bulb, it was 15fL. This is 538.63 lumens. If you convert this to an 80" screen, at 538.63 lumens you will get 28.37 fL.

Also see that closing down the iris imrpves contrast greatly. With the iris wide open, the contrast was 20000:1. With the iris at -15, the contrast was 37000:1.

On the NX7 closing the iris control slider half way will simply close both the lamp and the lens iris half way, and then enabling Auto DI, they can both only move from their lowest positions to the mid point that you capped it at. Together they can get a little darker than the NX5 though, but it's not drastically darker.

Last edited by SirMaster; 03-11-2019 at 10:45 PM.
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post #29 of 40 Old 03-12-2019, 08:16 AM
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I don't understand why people keep saying this like you can't do it with the NX5.

You can certainly clamp down the single iris on the NX5 and still engage Auto DI.
At -15 you are already clamping the one iris down almost to max, leaving you almost no dynamic iris.

You don't have the same range of iris control in the single iris nx5 as you do in the nx7. You have the same *setting*, but not the same range. On the nx7, -15 means one iris is at -15 (mostly closed) and the other at -7 (about half closed), and you still have a lot of dynamic range left for the DI, so you start darker on the NX7 than on the NX5 at -15, and go go even darker still in dark scenes to achiever a lower black floor.
Quote:
No, it will be nowhere near 60fL.

See this review of the NX5:

https://translate.google.com/transla...s%2F%3Fp%3D297

It was measured on a 110" screen and with iris at -15, in low bulb, it was 15fL. This is 538.63 lumens. If you convert this to an 80" screen, at 538.63 lumens you will get 28.37 fL.
Assuming that 538 lumens is accurate at the absolute lowest setting on the NX5, that is actually 36 fL on his 1.3 gain screen (assuming mid throw, in a shorter throw it would be even brighter). Your SDR target is ~16fL, with 20-25 being about the highest you would ever want to go. 36 is just too bright for SDR.

The key here is you can't go dimmer, so when you are trying to watch a movie with bright scenes, you either suffer the pain or turn on the lights in the room and completely destroy what little contrast you had. You can't turn it to a lower lamp or clamp the iris down further, you're just stuck with it. It's a no win situation.

The NX7 could take that same situation and with the dual iris and the color filter, drop that lowest figure well into the low 20's which is perfectly acceptable for SDR, improve on contrast and black floor by double, and have a wider color gamut.

Quote:
Together they can get a little darker than the NX5 though, but it's not drastically darker.
It's enough of a difference to get twice the contrast, and if you then add in the color filter that drops it another 15-20%, you indeed would get "drastically darker".

I'm far from an expert here, I have just followed the new JVC projectors closely and there was a LOT of discussion on this topic where someone with a 120" 2.8 gain screen was told by the pros that it would be way too bright with an NX5, and that screen translates to slightly dimmer than an 80" 1.3 gain screen with the same lumens. So throw everything I have said out and just go by that. It's too bright for that screen and SDR is not going to be good to watch on it.

My recommendation stands, either go with an NX7, change out to a low gain screen and stick with the NX5, or just do an OLED and call it a day.
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post #30 of 40 Old 03-12-2019, 09:51 AM
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But he said he’s putting it in a custom library. Doesn’t sound like a dark man cave theater space.

You are saying 36 fL will be too bright with an 80” screen. Will that also be too bright for say a 77” OLED? Because a TV will be above 36.

16 is ideal for a theater, but is not enough once you start getting ambient light. 36 is hardly enough. He will be fine with either projector.

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