CurtPalme.com Home Theater Forum

[stridsvognen]

[redfox001]

I have a 100 inch width screen. Green gamma going like an arrow and I have not maximised contrast yet so sorry can not say but there is much more light than I had with digital.


We might mod a barco housing and put a Marquee inside lol

[redfox001]

But it would be fun to get a Marquee to compare. All these mods that are described on Curts site is that all or did Mike do more mods that are not in the public domain yet? Would be fun to mod a Marquee The 8500 ultra did have bad focussing and bloomed very soon. But I still remember the picture and it was great perhaps a little more noisy but my memory is not that well.

[stridsvognen]

Can you post the data of that calibration, im also using a 100" screen.

[redfox001]

I see I was on 8,7 ftL. But I was low because of the 'streaking' issue. I had 11 ftL on 70 or so. I was now on 65 I think.

[gjaky]

[redfox001]

Wow that is great stuff but I am already far over my head with the electronics. I studied physics some time ago but electronics was a hobby but for this work we need the real experts. Still if we could reroute the video signal through a Marquee board and leave the Barco board as a dummy than all the electronics would still think everything works but if there would be a failure I dont know?

[stridsvognen]

[redfox001]

The contrast is bad because the low end is not measured with my i1pro. Below 30 ire I will need another meter.

There is a trick however and that is to make a small screen and place it close to the CRT than the light level will be enough to measure the low ire part. But I never did that yet.

[stridsvognen]

[redfox001]

As I said the i1pro. I bought it from a professional calibrator because he had to change his meter every few years but all these i1pro's don't do the low ire part he assured me. The good part is that they measure accurate colours but I will need a spider one of these days to measure the low ire because they do that better.

[redfox001]

He it is sharper with the new video amp! I can clearly see it in the subtitles they are better at contrast 70 than they where yesterday.

[Francisco]

oh boy Stridsvognen you must be a really Barco and Eisemann hater. I do agree on a lot of things you are saying but sometimes you are jumping to conclusions.

With the Eisemann mods and moome internal IFB-HD V3 board the bandwidth improved significantly and it resolves 1:1 much better, see picture:

1080p@60hz


I do agree that the video chain of the Marquees is kept simple and straight forward with a good result on 1:1 resolvability and can handle very high BW up to 200mhz.

But it is also a machine that needs a lot of attention to get it that far with a lot of modifications and tweaking. Also simple fact I don't have one... I have a Barco and will try to get the very best out of it because that's the sport off course like you try to get the best out of your Marquee. I already love the picture that it gives and the fact that it is silent because of the split pack configuration.
About Greg Eisemann, he has a small business and it's decreasing rapidly due to digital solutions. His modifications does improve the BW, don't judge him if you haven't tested it yourself. And I agree on the figures and percentages he's claiming are BS, but that's just different culture he's an American they exaggerate to make their point, bigger better best. But he knows what he is doing and has a lot of knowledge don't be to harsh on him.

I think it's very cool that we can combine our knowledge here and try to get the best out of our projectors. Doesn't matter if it's a G90 909 or 9500 ultra.

[redfox001]

Ok what I am seeing here (in these pictures above) is good enough for me. I played with some 1080p material and came to the conclusion that it looked best at 720p@72. Resolving the bandwidth is indeed important I realise now. Glad you lead the way as usual

I wonder what your 1080p@72 looks like cause in my case 720p@72 had almost the same 1 on 1 resolution as 720p@60.

[stridsvognen]

Try play with your contrast seting while displaying the 1:1 pattern, Look at the tube face, and start from 0 contrast, and slowly turn it up, do the difference in output on the vertical vs. Horizontal stay the same no matter how you drive the yube, or do you loos all vertical high resolution at low level output.?

The pattern after the SMPTE pattern on the HD Basic blu ray have a 1:1 0-100% IRE and a 0-50% IRE.

If someone have the skills they should make a 1:1 testpattern for CRT with 10%IRE steps.

[stridsvognen]

[stridsvognen]

[Francisco]

[CasetheCorvetteman]

I was going to buy the modded boards for my Barco and then thought f*** it, what for? The machine is capable enough as it is, why dump another heaps of unrecoverable cash into it?

I use a PC for 3D movies, the image quality is perfectly adequate. The biggest improvement i felt ive got from it so far is installing a far better screen and putting up a better ceiling using good quality German made tiles painted black. Those two items alone made a massive difference to image quality, but they can be used again on whatever machine eventually replaces my CineMAX.

I spend far more time playing my Nintendo WiiU on the Barco than i ever will watching movies, and i lost interest in test patterns some time ago. At the end of the day, you can improve the projector ten fold, but will it really matter? Probably not in five years time.

[redfox001]

Thanks Case your words are true and I honestly tested the extra bandwidth and it is nice to have. But when I look at the screenshots MP has put online I am stunned they are very very sharp. So I conclude that the Marquee when modded to the end and I don't know what tubes and lenses MP uses is possable the best machine in picture quality and Strid might have a point there. But the differences are very small because I know how stunning the 909 looks too with the lugs and hfq's.

When I rethink everything and after reading and soldering a lot I conclude that what Eisemann has done is a tremendous thing. He has brought the 909 to a level that MP could not achieve in his own words. MP clearly stated that the neckboard holds limitations in bandwidth and that he could not get it right but as Francisco shows with the one on one together with Eisemann he has gone past these limits somehow and that seems like a miracle to me!

But I am honestly thinking that the 909 will be limited in bandwith anyway but makes up for that with the lugs lenses and focus and convergence and low noise. So they are on par is my best guess.

Will I do the Eisemann mods? I will tweak a little on my own and wait if my MP modded boards come close when I have a better hdmi converter. I also have some ideas for lowering the noise that are inspired by the MP modded boards.

But when I see that Vision one Curt has for sale I am tempted