Official JVC X30 / RS45 owner's thread! - Page 90

Off topic and a bit "brash" on my part but would it be possible to add a "feature" to your already excellent Calculator ? I'm wondering if there would be a way to include a Viewing Angle number as seen from the PJ's perspective and/or from the Money Seat ? I see a lot of discussion on how many degrees we should or shouldn't see to get the best or THX's recommended viewing angles . I think I could do it long hand if I put my mind to it , just wondering if anyone else felt the need .

Scott......................

Yah I have a lot of BIG features going to be added, I think I have a list of 40 features to add and that is one I'm considering. In general though I find the best place is that your eyes are near level anywhere between the center to the bottom 1/3rd of the screen. This actually means most people would mount their screens lower than a lot of people do.

I'm even eventually contemplating a furniture HT room designer which calculates angle of projection and allows you to set furniture heights and the size of people. I even want to make a SIMs like interaction where you can have some people walk around the room and it show you at what point there nasty little head gets in the way (this is probably a year away). This feature will be funny but useful.

Right now I am working on software at work that pays my bills, so I won't be able to get to the calculator until this weekend I might have a new release by this upcoming Monday.

I dont have access to a HDMI HTPC or I would check it out.

Bummer! I need to send you a laptop then!

I think this is a big YMMV here.

A big variable is the angle we sit at (i.e. head tilt). I sit very reclined with my head tilted back a bit, this requires the screen to be higher than the 'bottom 1/3rd' principle.

In a 'home' theater environment, I doubt many watch while sitting straight up. Part of the point of a HT is to be more comfy than a commercial theater!

Please do! I would love to get one! This has been on my buy list forever and I still dont have one for some crazy reason.

Yah for sure, that is why I don't have it in my calculator right now.

That said, I do recline but I usually recline all the way back, and somehow I still prefer my screen pretty low.

I'm using a PS3 as the primary source for content (bluray & Netflix streaming) I also have my brightness set to -6. I have the HDMI input configured as "Enhanced". I find this is NEARLY the same as "Standard" and a brightness setting of 0 but using the Enhanced mode seems to provide just slightly better shadow detail in my opinion. Anybody else seen this?

On a side note I have to concur that, looking at the photos in Art's review, there is something wrong with the calibration or the projector. There is no way that blue should be so prominent in dark scenes.

Image Noise very hard?

Looks like I use the same type of set-up as you with the HTPC, I use MPC and MadVr for playback along with avisynth for motion interpolation. Everything is set to 16-235 on my players and Nvidia 560ti card. On the RS 45 using Enhanced my brightness setting is at -7 and if I use normal I need to put it at 0 for proper black floor setting. I prefer Enhanced as I feel like I can see more shadow detail, I agree that the image looks more contrasty and dynamic using a htpc over the same content played on any of my other standalone players (ps3, toshiba blu ray player, hd-dvd). The only thing I do is rip all my blu rays to mkv using clownbd and away you go no more disc handling. I do find it odd that you use -6 setting on standard mode of the Jvc, Thats pretty much where I'm at using enhanced.

When we attempted to calibrate the RS40 with the standalone player. I had to set the JVC to enhanced in order to take away the black crush.

Using MPC-HC did you set it to 16-235 before installing Madvr? If you didn't, the MPC-HC is still outputting at 0-255. This will also cause you to have black crush. You will have to uninstall Madvr and then set the MPC-HC to 16-235 output. For some reason Madvr locks you completely out of the MPC video color space adjustments or it does at least in my case.

I use an ATI 5670 card set to 16-235 (limited RGB).

I need to play with the clownbd more. I haven't spent enough time with it..kinda lazy. lol
I normally just rip the whole disc using MakeMKV. I lose the hard coded subtitles though.

Hi my pc ip address is 192 168 02, am I suppossed to change it to 01 as it states in the instructions ? I have no idea when it comes to networking .

1. On Windows 7 you must go to the Control Panel Network & Internet.
2. Hit the tab Change Settings and connections.
3. Go to internet protocol 4 (TCPIpv4)
4. Change setting manual and put in the numbers that are on the update information pdf.
5. Be sure to put 192.168.02 in the firmware update utility if it is not already there.
the instructions for firmware update.
6. Hit ok and try firmware update.
7. It can take 15-30 minutes
8. Follow the rest of the instructions on the firmware update pdf.

The bottom of my screen is almost at floor level. Although, the top of my screen is almost at ceiling level, so I'm not sure that counts.

Excellent and thanks for the update info . I was thinking more of the horizontal viewing angle as opposed to viewing height . Is this still in your update idea thinking ?

Scott....................

You can post about in my dedicated calculator thread and I will respond there, don't want to get too off topic.

I don't know where I will go with it yet to be honest, the next version most important is getting the SPECS of each projector working and fixing a lens shift bug. Then the next most important feature is showing metric measurements as an option for non-US people.

Are you guys running your projector on a dedicated circuit?

I have a dedicated circuit for my projector and a dedicated 20amp circuit for my equipment rack. My three buddies that are electricians and wired my basement thought i was a little crazy for doing that.

Thanks I will have a look and see if it works this time

I blew my outlet where my kitchen island meets my living room the other day. Man it's always something, luckily I use a CyberPower 900watt UPS with AVR, so the equipment didn't even glitch when the outlet pop'd.

You don't really need a dedicated circuit though, even a pretty powerful projector using up to 500 watts is only pulling 4.2 amps at peak load. You do have to account for any other devices plugged into the circuit of course however. The JVC's are 450 watts I think.

These CyberPower UPS are good for the money I think, the batteries last a long time and they have saved me more than once.

I have a tripp-lite UPS with AVR for my Mits HC3800 PJ, it's the only thing plugged into it. I also plug the UPS into a power strip and I only turn that pwr strip on (which powers the UPS) when I fire the PJ up. This means that most of the time (PJ off) there is no AC going to the UPS. I think this greatly extends battery life. When my tripp-lite has pwr feeding it (but it's not 'on'), it's pretty warm, and the battery is not only warm/hot from this, but is probably being consistently cycled. Not to mention the electricity I'm saving (considering how warm it gets w/o powering 'on', it's not insignificant).

So far the original battery seems to have lots of life left, and the UPS is a good 5+ years old.

At risk of sounding lazy, what is the consensus on the potential for the early bulb issues these JVC units? I'm not a videophile like many of you so I haven't read this entire thread. What I do want is something great for 2D, so the ghosting issue is irrelevant to me. I'm still stuck with 720p for Christ's sake, so it's time!!!

I have no windows in my dedicated room. Strictly for bluray use. 120" Dalite screen with 1.6 gain. I have been using my BenQ 8720 on low lamp mode. So even if the JVC bulbs dim a bit, it maybe still be bright enough. Any thoughts?

The last couple of pages of this thread> http://www.avsforum.com/avs-vb/showt...1376514&page=6 have some early data, but you'll have to wait a little longer for data at the 300-500hr mark.

Even so, if the JVC lamp dims 50% from new, it would still be brighter than your 8720 with a new lamp (assuming you have the mnl iris closed down). The problem is if it does that by 300-400 hrs, then you'd might get too dim by the 600hr mark, etc.

Thanks Fleaman. I have my iris at half. I ran my last bulb at high mode and I lost it under 1000hr. This low-lamp mode I am running at 1800hr now at it's tolerable. I get a sneaky suspicion it's dying so now I'm itching for a new PJ as opposed to another bulb.

I should learn how to measure light output so I can discuss more objectively with you guys.

Especially with those California electricity prices, guess you don't have the 7cent kilowatt electricity.

Since this is a JVC thread, I wanted to caution users. You need to make sure your projector has power to it all times, even during standby. JVC support told me last year's bulb issue strongly correlated to users killing power to the projectors frequently.

Fleaman, you have a Mits, so this doesn't apply to you, and besides, it sounds like the UPS would trickle that standby power anyway.

So unplugging it during storms and whatnot is bad for it then? Or are you saying that it being subjected to power outages is bad for it?

Yah, that's called plausible deniability.

Another example:
Someone emails you a critical task, so we might say the email was slow today, so I didn't get it before I left work, now unless they send someone to check my email and to see when I received the notice, they'll never know I was actually at a beer festival paying the hula dancers with tips I got from the hidden affiliate links attached to some site secretly (hey just kidding, relax).

Well I'm in L.A., so under DWP (LA city power, not a private utility), not So. Cal Edison which is more expensive. In fact, back in the rolling blackout days DWP rates were a good 50% less (or even less than that) than Edison.

On handy bill it says (used 1146 kWh):
Tier 1 energy 1,000 kWh x $0.07020 = $70.20
Tier 2 energy 146 kWh x $0.08520 = $12.44
Energy cost adj 1,146 kWh x $.05690 = $65.21 (reflects energy costs variations DWP pays)
Electric subsidy adj 1,146 kWh x $.00447 = $5.12
Various taxes = $15.63

So $168.60 (we get billed every 2 months, so this would be $84.30 per month). This was during the summer, July/august/sep, so I was using the AC.

Lately, in the last few years, electricity has been more than it used to be, which seems logical due to the cost of wholesale energy.

How does that compare?

I think you were the only one who reported this warning. Not at all denying JVC support told you this, but one has to wonder about the logic of this.

For one, we're not talking about 'killing power to PJ' which sounds like people cutting off pwr while the PJ is on (no cool down period). Is it possible that was what they meant? Believe it or not, there as been much discussion here on AVS in the past about the theory of shutting off PJ's by killing the power to the PJ as opposed to a fan cool down, and there were/are people practicing that method.

Perhaps JVC meant that?

Because when the PJ is powered down, there is NO power going to the lamp, so how could unplugging/plugging the AC cord (or pwr strip) affect the lamp? JVC needs to at least explain the logic/theory behind this before I give it some merit.


A UPS would still trickle the power IF you leave the UPS powered on. If you turn it off, but still leave it plugged in, it will not trickle power to the PJ.

What concerns me more, now that I remembered it, was reading the JVC had more problems (not lamp related) by those who unplugged (after pwr down), and no remembering settings, etc.