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Marquee Lens options and video chain for a blend

 
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Melifluonze




Joined: 25 Nov 2013
Posts: 262
Location: Upstate NY

TV/Projector: 9500LC Ultra


PostLink    Posted: Sat Feb 27, 2021 5:39 pm    Post subject: Marquee Lens options and video chain for a blend Reply with quote


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I could have sworn there was a document or link somewhere that summarized all of the lens options for the Marquee. Like why you'd use each one, what the capabiities were, throw distances, etc... Anyone know where it is?

I'm trying to set up a blend. Screen is an Elite AT, 1.0 gain, 138" diagonal, 2.35:1 (126.9" x 54"). Each 9500LC Ultra would project a 71" x 54" 4x3 image with a 12% blend zone.

I'd like the projectors as close to the screen as possible, with full 4:3 rasters, using all available phosphor. I'll only be projecting 2.35:1 on this. 16x9, etc, uses a different projector.

Any idea on the best lenses to use? The Ultras are recent, NIB, with HD-10L's installed. I can use those or GT17's or HD-10E's...

I'm looking at the following chains, since I have most of the components...:

Lumagen 2144 -> Moome Mux -> DVX 8022 DVI in -> Extron 202xi -> 9500LC VIM

Lumagen 2144 -> TVOne -> Moome HD HDMI input modules for the Marquee

I've been reading a lot, but any opinions are welcome!!!! It looks like if I did this right, it could be 3840 across both projectors, but I'd have to use something else other than the 2144 to split the 4K and feed two TVOnes 1080p24... maybea later Radiece Pro can do that?

I'm planning to stick with stand-alone solutions, so no HTPC stuff, if you wouldn't mind....

Thanks!

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Dual Marquee 9500LC Ultras, Dual JVC RS600
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Tim in Phoenix




Joined: 21 Oct 2006
Posts: 4378
Location: Phoenix


PostLink    Posted: Sun Feb 28, 2021 3:36 am    Post subject: Reply with quote

Guys!

Some of the considerations are that each lens type has a minimum and maximum focusable distance to screen. Different signals at different H scan rates have maximum raster widths on the tube face, and on the screen. Different signals have different timing for how many pixels are visible in each scan line. The throw distance charts in Marquee manuals also factored in displaying NTSC video, so those charts usually have the projector too far back.

Any questions? LOL
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gjaky




Joined: 05 Jun 2010
Posts: 2789
Location: Budapest, Hungary


PostLink    Posted: Sun Feb 28, 2021 7:01 am    Post subject: Reply with quote

If your Marquees are a say post 2008 VDC made then you most likely have the "new-style" Elcan HD10L lenses which are quite good to start with.
Also if you have that new Marquees you may want to consider to revert the neckboards to the old style, if you haven't done that so far...

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projectors in the past : NEC 6-9PG xtra, Electrohome Marquee 6-7500, NEC XG 1351 LC ( with super modified Electrohome VNB neckboard !!!)
current: VDC Marquee 9500LC
The MOD: VNB-DB, VIM-DB
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kal
Forum Administrator



Joined: 06 Mar 2006
Posts: 17850
Location: Ottawa, Canada

TV/Projector: JVC DLA-NZ7


PostLink    Posted: Sun Feb 28, 2021 7:52 pm    Post subject: Re: Marquee Lens options and video chain for a blend Reply with quote

Melifluonze wrote:
I could have sworn there was a document or link somewhere that summarized all of the lens options for the Marquee. Like why you'd use each one, what the capabiities were, throw distances, etc... Anyone know where it is?

If it's anywhere it'll be mentioned here: http://www.curtpalme.com/forum/viewtopic.php?t=2761

Or possibly in the Marquee manuals/downloads here: http://www.curtpalme.com/ElectrohomeMarquee_Downloads.shtm

Maybe this one?:

Electrohome Marquee Throw Distance and HD-10L/HD-10GT17/HD-10GT26 Lens Information 0.1mb

Kal

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ElTopo




Joined: 07 Nov 2006
Posts: 1607



PostLink    Posted: Tue Mar 02, 2021 5:15 pm    Post subject: Reply with quote

What TV One units are you planning to use ?
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Barco Cine 9 the one and only
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