CurtPalme.com Home Theater Forum

napos · Joined: 21 Oct 2006 Posts: 164 Location: Athens, Greece

I need your help on this one guys. I just got a Marquee 9500LC Ultra. It originated as a 8500LC Ultra that was fitted with 9" tubes. The lenses it has say" HD10GT". They don't specify if they are the GT17 or GT26. The friend of mine that sold me the projector was using a 110" diagonal 4:3 screen, so I am guessing they are not the GT26. Could they be the plain HD10?
I am going to be using a 16:9 80" wide screen, which I am currently using with my Marquee 8500.
Will I be able to have a decent focus if I place the 9500 at the same position?
Thanking all of you in advance,

Nicholas

**Curt Palme** · Posted: Tue Dec 23, 2008 1:18 pm Post subject:

Yes, you should be fine. THe 10GT are earlier versions of the GT17 from what I know..

napos · Joined: 21 Oct 2006 Posts: 164 Location: Athens, Greece

Thanks Curt,

You really set my mind at ease. I am having it installed tomorrow. Did I mention it is MP modded? It will be replacing my MP modded 8500 non Ultra. The mods the 9500 has are v.1 I believe, where as the mods the 8500 has are v.2. However, I expect the differece will be based on the 9" tubes' ability to resolve more detail and of cource the LC vs AC issue.
Will keep you posted on the matter.

Thanks again,

Nicholas

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

Bravo Napos !! Welcome to the Marquee 9 Inch Club !!!!

Athanasios

PS: If I come to Thessaloniki this spring maybe I'll make a trip to Athens and check out your set up!!

Tim in Phoenix · Joined: 21 Oct 2006 Posts: 4409 Location: Phoenix

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

napos · Joined: 21 Oct 2006 Posts: 164 Location: Athens, Greece

Thank you all for the quick reply.
I am not certain as to which formula I should use. I have the appendix B (1.15*(SWin + 11.2in))
from VDC and I also have the lens program, which give different results. Also, if the HD10GT is an older lens, is the trow distance similar to the GT17 or the regular HD10?

Thanking you in andvance,

Nicholas

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

I never use the formulas as it depends on how well you maximize the Phosphor . You should make sure the image is 5-7 mm away from the edge of the tube face. The raster can go over the edges its the image that you do not want to go over the edge or you could implode the tube. So you center the image on the green tube face(use and actual external source not the internal patterns),I use the overscan image on the DVE disc's. Once that is centered i then aim it at the screen while its on the floor and move the PJ till the Image fills the screen. Also make sure its square to the screen as well. Once you do this transfer that location to the ceiling. I tie a washer to a string and and hang it from the ceiling till it touches the green lens. I then tape the string or make this location on the ceiling. Then mount the PJ so that the Green lens is at that mark on the ceiling. The lens formula is really just a conservative one that does not maximize the phosphor use of the tube.

Athanasios

PS Kai na kytakse's afto to edo:

http://www.avforums.com/forums/crt-projectors/397403-generic-crt-alignment-focus-set-up.html#post3484454

napos · Joined: 21 Oct 2006 Posts: 164 Location: Athens, Greece

The problem is that I will be at work when the installation will take place. The guy installing it is knowledgeable regarding CRTs. He just wanted me to give him the throw distance to start with. He will then do the mechanical setup. Should I use the formula as a rough guide and add let's say 5-8 inches to the actual position? I will be using the lens program based on which I performed the installation of the 8500. The results I got for 198cm wide are 275cm from foot to screen for the 8500 and 306cm from foot to screen for the 9500 with GT17s. Should I go with that???

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

napos · Joined: 21 Oct 2006 Posts: 164 Location: Athens, Greece

stefuel · Posted: Tue Dec 23, 2008 11:15 pm Post subject:

Use the e-home throw calculator from Tim's site. It's very easy to use.

napos · Joined: 21 Oct 2006 Posts: 164 Location: Athens, Greece

Bad news: unfortunatelly, there is some problem with the green tube. I can see dotted lines in diagonal patterns all over the green image and also, I believe that all the tubes may be emitting light with no signal. Is this a problem with the low voltage power supply? If so, I can use the LVPS from my 8500 and correct the problem. Please let me know if this can be corrected this way.

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

Sounds like it might just be a high G2, go into the service menu for RGB color temp and select 6500k and lower the G2 values according to Tim Martins guide on his E-home site http://www.etechvideo.com/techtip1.htm.

I would also suggest you get an Eye One display colorimeter and use HCFR to do your greyscale correctly, but tims guide is ok for now.

http://www.curtpalme.com/EyeOneDisplay2.shtm

Athanasios