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garyfritz
Joined: 08 Apr 2006
Posts: 12088
Location: Fort Collins, CO
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| Posted: Thu Mar 01, 2007 5:24 pm Post subject: |
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| Lyckman wrote: | | I Run a 88" wide screen (Wilsonart designer white, gain=1.24). Before the mod I was throwing 24 cd/m2 = ~7fL with the 9500 LC/Ultra. The pj has prestine tubes. This is measured at FULL FIELD. Now, with the frankenyokes I get 30cd/m2 = ~8.7fL. The visual difference is obvious! |
Hm. 8.7 fL is no problem for the tubes. But if that's what you're delivering on a full field, what are you pumping out with lower APL screens? Let's say e.g. you display the internal crosshatch pattern -- that's very low APL, but the crosshatch lines are going to be VERY bright. Bright enough I'd be concerned about the tubes. What's your ftL measurement with a window?
| Quote: | | The 22-22 yokes are fixed around the tube, hence the ability to center raster is *gone*. |
Eww. Not good. That convergence drift would be a real annoyance.
Thanks for the info!
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cmjohnson
Joined: 03 Apr 2006
Posts: 5180
Location: Buried under G90s
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| Posted: Fri Mar 02, 2007 3:03 am Post subject: |
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I haven't visited this thread of mine in a while. I'm very pleased to see that others are finding this mod to be worthwhile and it wasn't just my HOPES for some success telling me that it was working well.
Losing the raster shifting feature of the Thomson yokes isn't a drawback. You don't use THAT feature to compensate for convergence drift anyway, if your magnetics are set up right and your PJ is healthy. And that feature really complicates the hell
out of a proper magnetic setup. I don't miss that feature at all.
While there IS a definite improvement in total resolution ability, it's not such a HUGE improvement all by itself. What kicks it in the butt is your ability to stay sharp at
higher contrast levels than you've ever seen before. Like contrast at 80 and no blooming visible. Not that you need to go that high...but it's nice to stay sharp at peak contrast points in a movie. And focus retention is much better with changes in contrast settings.
In my own all-out max resolution test runs, I was able to achieve an estimated MTF of 15 percent on a green 180DMB22 at a resolution of 2048x2048x60. I'm estimating that MTF percentage based on what I remember other known MTF numbers to look like on
the SMPTE standard resolution chart as displayed at various resolutions on Tse's testbed machine at VDC.
Of course, the HD-8B lenses can't match that performance on the screen. But I
tentatively would qualify the focus results on the CRT face as being roughly
equivalent to his new Marquee 8500HR with its STOCk Thomson yokes.
I say that VDC should be putting 2211s or 22-22s on the HR and seeing just how
madly sharp they can make it.
CJ
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Lyckman
Joined: 09 Nov 2006
Posts: 66
Location: Gothenburg, Sweden
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| Posted: Fri Mar 02, 2007 8:59 am Post subject: |
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| cmjohnson wrote: | | I haven't visited this thread of mine in a while. I'm very pleased to see that others are finding this mod to be worthwhile and it wasn't just my HOPES for some success telling me that it was working well. |
I was just kidding. The mod sux. It's all in your head! 
| cmjohnson wrote: |
Losing the raster shifting feature of the Thomson yokes isn't a drawback. You don't use THAT feature to compensate for convergence drift anyway, if your magnetics are set up right and your PJ is healthy. And that feature really complicates the hell out of a proper magnetic setup. I don't miss that feature at all. |
Well, I miss it. Raster centering is a big part of correct magnetics setup on the marquee. And it's done in conjunction with the pole-magnets. If setup correctly you should have perfect convergence in a rather large area of screen center even when convergence coil disconnected. For me, that has always resulted in zero drift.
| cmjohnson wrote: |
While there IS a definite improvement in total resolution ability, it's not such a HUGE improvement all by itself. What kicks it in the butt is your ability to stay sharp at
higher contrast levels than you've ever seen before. Like contrast at 80 and no blooming visible. Not that you need to go that high...but it's nice to stay sharp at peak contrast points in a movie. And focus retention is much better with changes in contrast settings. |
Amen!
| cmjohnson wrote: |
In my own all-out max resolution test runs, I was able to achieve an estimated MTF of 15 percent on a green 180DMB22 at a resolution of 2048x2048x60. I'm estimating that MTF percentage based on what I remember other known MTF numbers to look like on
the SMPTE standard resolution chart as displayed at various resolutions on Tse's testbed machine at VDC.
Of course, the HD-8B lenses can't match that performance on the screen. But I
tentatively would qualify the focus results on the CRT face as being roughly
equivalent to his new Marquee 8500HR with its STOCk Thomson yokes.
I say that VDC should be putting 2211s or 22-22s on the HR and seeing just how
madly sharp they can make it.
CJ |
Get yourself a LC-Conversion kit and add a set of HD-10F's. you won't regret it.
_________________
Frankenyoked 9500 LC/Ultra w/ MPv2 neckboards. MPv2 VIM (To be installed)
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cmjohnson
Joined: 03 Apr 2006
Posts: 5180
Location: Buried under G90s
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| Posted: Fri Mar 02, 2007 2:50 pm Post subject: |
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I've offed all of my 8" machines and am down to just my own 9500LC so for the moment I am not looking for an LC conversion kit, thanks.
But something's gonna happen soon. I just got a pile of P19LUGs in and while they are all used, some people would KILL for the best of them. They're that nice. And I will be getting many more.... 
CJ
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Lyckman
Joined: 09 Nov 2006
Posts: 66
Location: Gothenburg, Sweden
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| Posted: Fri Mar 02, 2007 3:37 pm Post subject: |
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You'll have to frankenyoke that 9500..!
Especially if you're gonna put in some dim LUGs.. 
_________________
Frankenyoked 9500 LC/Ultra w/ MPv2 neckboards. MPv2 VIM (To be installed)
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cmjohnson
Joined: 03 Apr 2006
Posts: 5180
Location: Buried under G90s
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| Posted: Fri Mar 02, 2007 8:07 pm Post subject: |
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Mark II's are ready to install. But as my installation is a PITA and I HAVE to drop the PJ from the ceiling to do anything to it, I'll be doing a series of upgrades all at once when I put in the Mark II's.
I've got a firmware upgrade to install on the CLM, I need to do some minor mods on a tech bulletin (both edges of the picture can't quite be shown at once), swap out the O3P VIM for my MP modded 02P VIM, send the 03P out to Mike for modding, fix a very slow
leak in the red assembly, give all the lenses a good cleaning, and whatever else I feel needs doing.
It's a day's worth of work in total not counting the realignment afterwards.
But I'm not changing out the tubes because my brand new, factory Panasonic P19LCPs have barely 200 total hours on them.
But yes, I do have LUGS in stock now. They ARE used but many of them would be VERY easy to sell and the best of them are solid 8s. All but unworn.
CJ
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Lyckman
Joined: 09 Nov 2006
Posts: 66
Location: Gothenburg, Sweden
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| Posted: Fri Mar 02, 2007 10:21 pm Post subject: |
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And that's why I preffer my floor-mount..
Some installation pictures:
I built a new wiring harness with connectors from a local component store.
// Lyckman
_________________
Frankenyoked 9500 LC/Ultra w/ MPv2 neckboards. MPv2 VIM (To be installed)
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Joust
Joined: 05 May 2006
Posts: 2429
Location: Almonte, Ontario, Canada
TV/Projector: Marquee 8501LC
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| Posted: Fri Mar 02, 2007 10:33 pm Post subject: |
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I'd like a set fo those yokes if anybody has them. I havn't had much success in finding them.
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Lyckman
Joined: 09 Nov 2006
Posts: 66
Location: Gothenburg, Sweden
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cmjohnson
Joined: 03 Apr 2006
Posts: 5180
Location: Buried under G90s
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| Posted: Sat Mar 03, 2007 6:57 am Post subject: |
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Floor mounting is not an option for me. Nor would I ever do it that way myself because then it's the PROJECTOR that takes over the best seat in the house. That's MY seat!
NICE screen shots.
CJ
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Lyckman
Joined: 09 Nov 2006
Posts: 66
Location: Gothenburg, Sweden
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| Posted: Sat Mar 03, 2007 10:02 am Post subject: |
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Thanks, Yes it's the best seat. I have a recleiner on top of it. 
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Frankenyoked 9500 LC/Ultra w/ MPv2 neckboards. MPv2 VIM (To be installed)
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lamestlamer
Joined: 08 Mar 2007
Posts: 11
Location: Seattle
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| Posted: Thu Mar 08, 2007 11:39 am Post subject: |
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Where should I be looking for a set of 22-22s? Of course ebay and AVSforum won't have such a specific part. I checked the for sale here and all I see are CJ's old stock that got snatched up. Are there any part venders that you recommend? I'm guessing that Curt has already been cleaned out, but I suppose it wouldn't hurt to check.
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Lyckman
Joined: 09 Nov 2006
Posts: 66
Location: Gothenburg, Sweden
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| Posted: Thu Mar 08, 2007 2:04 pm Post subject: |
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I got mine of eBay... Came with a complete set of 1292-yokes though. So if someone fancy the rest of the lot, let me know.
Once in a while someone decides to part out a 1292q. Keep your eyes opened and be patient..
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Frankenyoked 9500 LC/Ultra w/ MPv2 neckboards. MPv2 VIM (To be installed)
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cmjohnson
Joined: 03 Apr 2006
Posts: 5180
Location: Buried under G90s
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| Posted: Thu Mar 08, 2007 3:57 pm Post subject: |
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Those are also used in a number of Barco PJs.
Hey, here's an idea....call Barco and ask if they have any. They probably do, but I would imagine they would not be cheap.
At the very least, a well-informed Barco tech should be able to tell you what models of Barco PJs will have those yokes. Then just look for a retired PJ in the appropriate models.
CJ
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Lyckman
Joined: 09 Nov 2006
Posts: 66
Location: Gothenburg, Sweden
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| Posted: Thu Mar 08, 2007 4:34 pm Post subject: |
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Pure speculation but maybe the barco "s" models that accomodates sony tubes might have them magic yokes..?
// Lyckman
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Frankenyoked 9500 LC/Ultra w/ MPv2 neckboards. MPv2 VIM (To be installed)
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Gino
Joined: 22 Apr 2006
Posts: 1363
Location: Trinity Beach, AUSTRALIA
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| Posted: Fri Mar 09, 2007 2:51 am Post subject: |
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It's very hard to find the required parts in my neck of the woods. If anyone was willing to find me the necessary parts for my blend, I would be happy to pay you for your troubles.
_________________
( B ) ( G ) ( R ) Blendzilla Down Under ( R ) ( G ) ( B ) - Tubes of Fury
Last edited by Gino on Fri Mar 09, 2007 3:30 am; edited 1 time in total
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bfeils
Joined: 23 Apr 2006
Posts: 166
Location: Phoenix
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| Posted: Fri Mar 09, 2007 3:24 am Post subject: |
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Does anyone know if there are any raster centering magnets for the180dmb type tubes like the ones in nec's? the nec's tube necks are much smaller but does anyone know of larger necked projectors using that style of centering magnets? 
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RNO
Joined: 17 Oct 2006
Posts: 18
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| Posted: Fri Mar 09, 2007 3:42 pm Post subject: |
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Is this FrankenYoke mod possible for a 1292 ?
How can I find which Yoke I have ?
_________________
RN 
Brain, like parachute, must be open to work well. -- Pierre Daninos
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nuttall_chris
Joined: 08 Mar 2006
Posts: 832
Location: Ottawa, Ontario, Canada
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| Posted: Fri Mar 09, 2007 3:44 pm Post subject: |
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| RNO wrote: | Is this FrankenYoke mod possible for a 1292 ?
How can I find which Yoke I have ? |
The 1292 already has the Frankenyoke mod.
The 1292 is a where I got my focus coils to upgrade my Marquee 8500.
Chris
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Joust
Joined: 05 May 2006
Posts: 2429
Location: Almonte, Ontario, Canada
TV/Projector: Marquee 8501LC
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| Posted: Fri Mar 09, 2007 4:35 pm Post subject: |
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| RNO wrote: | Is this FrankenYoke mod possible for a 1292 ?
How can I find which Yoke I have ? |
I have a deal for you. i'll send you my thompson yokes and you send me your sony yokes and we can both have teh frankenyoke mod. 
to my knowlege, no one has tried thompson yokes in the sony. you never know they may be better in that application. but i doubt it.
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