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macgyver655
Joined: 22 Aug 2007
Posts: 8508
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| Posted: Wed Aug 25, 2010 1:53 pm Post subject: |
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| CIR Engineering wrote: | | zGman wrote: |
My experience with MP is that that he is a relentless self taught genius - maybe sometimes
he does not express himself in the same language that some of us may have learned in
engineering school, but of the many conversations and the few days we had working
together at William's, there has never been I time when I didn't learn something new
and useful - Personally, I find these back and forth nitpicking sessions to be quite tedious.
(And could not care less about water pumps and analogies thereof...)
G |
Not to mention that Mike doesn't always want to, or care to, spill the beans on the whys and hows of all his projects. He likes to keep some things to himself and that is just the way it is for him. He's a good friend of mine and he doesn't tell me every last detail on some things he wants to keep confidential. But I will say that Mike has helped me on the phone literally hundreds of times in getting out of a repair jam, and he's only not had a solution less than a handful of times.
craigr |
Yes I think we all agree that Mike knows what he is doing as I have also indicated. It's just to bad that this beam current issue was even brought up or none of this would exist.
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CIR Engineering
Joined: 25 Aug 2008
Posts: 4269
Location: Chicago USA & Berlin Germany
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| Posted: Wed Aug 25, 2010 1:56 pm Post subject: |
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| Nashou66 wrote: | Macism's at its best.
But back to the issue about LUG's in Marquee's. Bruce(Techman707) made this comment on AVS and I have to ask, could it be this simple?
| Techman707 wrote: | | As for spot focus, my experience with new tubes is that they run from super sharp to super soft. No two tubes are ever identical. Add to that variations in focus coils, etc. and everyone will say something different. |
Since Galen said they also worked fine in his is it possible some just are not made as well as others? I can see this happening as I had a regular Green 108dvb that would not focus right no matter what, swapped in another Green in the same chassis and walla!! Good focus, same magnetics .
Nashou |
Every tube has variation. The ultimate focus with proper setup is somewhat luck of the draw. However, I have never seen a good tube that could not focus to a usable and acceptable level.
This is especially true on consumer grade CRT rear projectors. You know I have calibrated over 1,000 Mitsubishi sets (literally) and every tube is different. Rarely a set has all three tubes that can get VERY sharp, some have a razor sharp red, or green, and sometimes even a blue. But they always are variable from unit to unit and sometimes a client is unlucky and has a set with three tubes being soft. This is when I would actually increase peaking and/or use edge enhancements like VSM or LTI.
But on front projectors I haven't really run into soft tubes like fon consumer grade units.
craigr
_________________
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www.CIR-Engineering.com - craigr@cir-engineering.com
Phone: 865-405-6892
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mp20748
Joined: 12 Sep 2006
Posts: 5689
Location: Maryland
TV/Projector: 9500LC Ultra / Super 02 and 03 VIM
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| Posted: Sat Aug 28, 2010 2:14 am Post subject: |
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More shots, but this time I've done some serious changes to the projector, beyond the mini board mod...
Not really able to capture with the camera, but the actual brightness coming from my 9500 makes it look like a digital. Changes made to the CLM further improves the image while also lowering the noise floor so much that the entire low end jumps out at you.
And it's VERY sharp at 1080P 72hz... not sure if a LUG can handle this..
1920X1080P @ 72HZ into my Super Modified Marquee 9500LC Ultra.
Uploaded with ImageShack.us
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Spanky Ham
Joined: 22 Mar 2006
Posts: 5643
Location: Comedy Central
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| Posted: Sat Aug 28, 2010 2:18 am Post subject: |
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Could you take some MTF measurements with the method Scott described in the other thread?
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mp20748
Joined: 12 Sep 2006
Posts: 5689
Location: Maryland
TV/Projector: 9500LC Ultra / Super 02 and 03 VIM
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| Posted: Sat Aug 28, 2010 10:47 am Post subject: |
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| Spanky Ham wrote: | | Could you take some MTF measurements with the method Scott described in the other thread? |
If I understood all that's involved in doing that test, I would do it. To me, it's a little too complicated to follow or understand.
I am open to anyone wanting to come back and do it.
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mp20748
Joined: 12 Sep 2006
Posts: 5689
Location: Maryland
TV/Projector: 9500LC Ultra / Super 02 and 03 VIM
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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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| Posted: Sat Aug 28, 2010 12:21 pm Post subject: |
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pics are looking great, the pj that can run contrast at 100 does that have the barco focus coils in them.
_________________
1 answer always poses multiple questions.
marquee 9500ultra HD10L moome hdmi1.3 v3+ some mods.
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mp20748
Joined: 12 Sep 2006
Posts: 5689
Location: Maryland
TV/Projector: 9500LC Ultra / Super 02 and 03 VIM
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| Posted: Sat Aug 28, 2010 5:54 pm Post subject: |
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| dvh99 wrote: | | pics are looking great, the pj that can run contrast at 100 does that have the barco focus coils in them. |
Yes, it has the 909 focus coils.
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Spanky Ham
Joined: 22 Mar 2006
Posts: 5643
Location: Comedy Central
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| Posted: Sat Aug 28, 2010 7:44 pm Post subject: |
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| mp20748 wrote: | | Spanky Ham wrote: | | Could you take some MTF measurements with the method Scott described in the other thread? |
If I understood all that's involved in doing that test, I would do it. To me, it's a little too complicated to follow or understand.
I am open to anyone wanting to come back and do it. |
I would think you need to delve into the MTF tests and try to understand them. It really isn't that difficult. Continuing to show screenshots for proof of sharpness and improvements without any meaningful reliable and repeatable tests is almost pointless.
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mp20748
Joined: 12 Sep 2006
Posts: 5689
Location: Maryland
TV/Projector: 9500LC Ultra / Super 02 and 03 VIM
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| Posted: Sat Aug 28, 2010 8:22 pm Post subject: |
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| Spanky Ham wrote: |
I would think you need to delve into the MTF tests and try to understand them. It really isn't that difficult
And it's not that important to me either. If it were, it would have been on my to do list of things to test and verify what I'm doing.
Continuing to show screenshots for proof of sharpness and improvements without any meaningful reliable and repeatable tests is almost pointless. |
Let me help you out here. Concerning "sharpness" that would depend on the bandwidth and focusing ability of the set. using the SMPTE pattern, I've 100% proven that both Bandwidth and focusing ability is right were it needs to be concerning SHARPNESS with that SMPTE TEST pattern
Now for improvements... The MTF test does nothing to confirm performance improvements. To prove my point, a cheap digital projector would almost out perform any CRT with the MTF test, but we know that a cheap or otherwise Digital projector would not necessarily out perform a CRT projector in performance improvements.
Simply because I've been able to prove things with the SMPTE pattern, which is A VERY MEANINGFUL and RELIABLE test, it's really a pointless remark. So I'm not sure what you're tying to get me to prove, because there's really no need for me to prove anything beyond what I've already proven.
Showing a screenshot of the SMPTE pattern properly resolving 1080P 72hz with all three colors on at the same time is considered a pointless and non meaningful test..
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stefuel
Joined: 07 Mar 2006
Posts: 3353
Location: Green Harbor MA USA
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| Posted: Sat Aug 28, 2010 11:45 pm Post subject: |
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Mike,
How many times have you been asked to provide the same information to the same people. You do it at the registry of motor vehicles, state and federal tax forms, credit applications and insurance forms to name a few. Just take the picture, do the test, provide the results and the masses will leave you alone. If you don't, they will smell something fishy and just keep asking you for it. Stop fighting City Hall. Cross all those T's and dot all those i's. 
_________________
Chip
A Barco is only a AmPro with training wheels
Card carrying member of the AVS chain gang.
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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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| Posted: Sun Aug 29, 2010 12:06 am Post subject: |
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state AND federal tax, you get robbed twice?????
_________________
1 answer always poses multiple questions.
marquee 9500ultra HD10L moome hdmi1.3 v3+ some mods.
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tse
Joined: 03 May 2006
Posts: 1014
Location: Sweatbucket, Fl.
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| Posted: Sun Aug 29, 2010 12:11 am Post subject: |
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And sometimes city tax, too. Welcome to the USA. Home of the free!
Scott
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"Were we directed from Washington when to sow and when to reap, we would soon want bread."
Thomas Jefferson
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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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| Posted: Sun Aug 29, 2010 12:25 am Post subject: |
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we have city taxes too for maintenance of the sewer system and the afvalstoffenheffing for picking up the trash.
did you make that phono preamp yet scott?
_________________
1 answer always poses multiple questions.
marquee 9500ultra HD10L moome hdmi1.3 v3+ some mods.
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Nashou66
Joined: 12 Jan 2007
Posts: 16171
Location: West Seneca NY
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stefuel
Joined: 07 Mar 2006
Posts: 3353
Location: Green Harbor MA USA
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| Posted: Sun Aug 29, 2010 12:48 am Post subject: |
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Is there a tax for blow-up dolls? Curt's in trouble
_________________
Chip
A Barco is only a AmPro with training wheels
Card carrying member of the AVS chain gang.
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Sun Aug 29, 2010 1:04 am Post subject: |
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Pay up Chip, or the bitch gets popped! 
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dvh99
Joined: 25 Dec 2009
Posts: 2158
Location: nederland
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| Posted: Sun Aug 29, 2010 1:04 am Post subject: |
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haha, who in his right mind posts something about inflatable whatevers on this forum, it is asking for trouble.
_________________
1 answer always poses multiple questions.
marquee 9500ultra HD10L moome hdmi1.3 v3+ some mods.
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Curt Palme
CRT Tech
Joined: 08 Mar 2006
Posts: 24396
Location: Langley, BC
TV/Projector: All of them!
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| Posted: Sun Aug 29, 2010 1:06 am Post subject: |
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Hey, we're all mature gentleman here who can take a bit of ribald humor, right? 
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mp20748
Joined: 12 Sep 2006
Posts: 5689
Location: Maryland
TV/Projector: 9500LC Ultra / Super 02 and 03 VIM
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| Posted: Sun Aug 29, 2010 2:17 am Post subject: |
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| stefuel wrote: | Mike,
How many times have you been asked to provide the same information to the same people. You do it at the registry of motor vehicles, state and federal tax forms, credit applications and insurance forms to name a few. Just take the picture, do the test, provide the results and the masses will leave you alone. If you don't, they will smell something fishy and just keep asking you for it. Stop fighting City Hall. Cross all those T's and dot all those i's. |
Very funny chip..
The T's and I's as they pertain to my claims has already been crossed. The MTF test deals with how bright the display gets before it looses resolution. I've already said I'll not get into confirming the brightness issue. See my quote below:
| Quote: | The difference between stock (at maybe 60 to 70 contrast) and my modified 9500 at 100 contrast is not subjective.
So my latest Super mods may or may not have this effect on a Marquee. If it does, fine. if not, that's also fine because it's not what I'm offering or claiming for the mods.
Now, concerning bandwidth, sharpness, finer detail, better colors. And if everything in and around the system is a good compliment to the mods, then those virtues is what I'm offering.
I'm really waiting to here from craig on how the boards work in that Marquee he'll be installing them in. I'm waiting to hear how well they work with the LUG's. I've never had the mods in a marquee that had LUG's in it. So I got a chair ready and waiting for that day when Craig is able to install those boards in that Marquee... |
So yes, and as it has been confirmed by Craig, my personal Marquee can get very bright when the contrast is cranked up. Why, I have an idea, but won't bother to confirm.. is it something that I've been promoting or offering - NO. Would they effect any Marquee that they would be put into... and as I've indicated so many times on this same subject, I have no idea.
So would I want to get into something that's not offered - NO. Would I want to prove something that I'm not promising that would happen - NO. Is it something worth looking into - maybe. Will I be the one that would initiate the testing - NO
Do i really care if the mods will make a projector operate up to 100 contrast - No, because who'll want to run a CRT projector at that contrast level?
So concerning the things that I mentioned as being real virtues - well, that I don't need to further prove..
| Quote: |
Now, concerning bandwidth, sharpness, finer detail, better colors. And if everything in and around the system is a good compliment to the mods, then those virtues is what I'm offering. |
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