CurtPalme.com Home Theater Forum

[Joe Patino Jr]

Ok people, name Joe Patino have questions for members of this board, who are more knowledgeable and wiser then I am about crt's. As I am a total newbie. I have a Toshiba rear projection tv. built in 1996, I have had it for 17 yrs. now this tv is bright, with real good colour, but it is an 480p. it is sharp and clear. Will any of the 9 inchers be any brighter, sharper. with good colour, then my tv.? I have alreay talked to Mr. Palme, but this is one ? I didn't asked. Can anybody give me an answer? what kind of ft.l does an 1200 lumen crt projector display? I thank you'all in advance for your help. joe Patino.

[opv]

In order to estimate the on screen luminance (in FTL) you need 3 parameters:
1) Projector light output
2) Screen dimensions
3) Screen gain

[CasetheCorvetteman]

Almost certainly if the screen and room are right...

[garyfritz]

A rear-projection TV is beaming the light straight at you. Front projectors bounce it off a screen, which is generally less efficient. There's a fair chance your rear-pro used a "lensing" effect to focus the light -- was it dimmer if you stood up or walked to the side? A high-gain projection screen will produce a similar effect, but many people don't like the "hot-spot" effects &etc you get with high gain (similar to what you got with your lensing rear-pro).

The rear-pro screen is, what, maybe 40-50" diagonal? Shoot a 9" projector onto a screen that size and you'll need sunglasses. Most of us prefer larger screens (in the 90-150" range diagonal) and that means you are spreading the same light over a much larger area ==> dimmer image.

With the small screen and lensing effect, you could probably watch your TV in a fully lit room. You usually watch a projector in a dark room, because the large screen's image is dimmer. (You wouldn't watch a movie at the cinema in a fully-lit room either, for the same reason.)

Though actually if you shot a projector onto a 50" screen, you might be able to watch it OK in a lit room. It would be 4x brighter than with a 100" screen so it would mostly overwhelm the room light just like your rear-pro does. You wouldn't get as much contrast, because the screen can't go "black" if ambient light is shining on it -- but to be honest, direct-view and rear-pro screens don't go "black" either. Their gray just LOOKS black because everything else is so bright. In a dark room, a properly-set-up projector setup can go nearly dead black. A lot of CRT-o-holics really love that true black.

A properly-set-up 9" will easily handle 1080p, so it will definitely be sharper than your Toshiba.

So you have to decide things like: are you OK with watching in a dark room? Do you want a big screen or are you happy with your small screen? Do you want to take on a bit of a "hobby" as opposed to "plug it in and turn it on" ?

[Joe Patino Jr]

OPV. Corvetteman,garyfritz. Thanks for your reply, appreciate it. Garyfritz, the screen on my Toshiba measures, 56" dia. and no, I don't mind fiddling with it as long as I don't have to do it every day. I have a totally blacked out room. thanks

[Nashou66]

Joe , your asking about a front Projection system to replace your rear PJ correct?

Athanasios

[CasetheCorvetteman]

[Joe Patino Jr]

Nashou66, that is correct.

[Nashou66]

[Joe Patino Jr]

Nashou66. A least a 120" dia. If it makes any different, my room is dark bat cave.

[Nashou66]

[Joe Patino Jr]

Nashou66: My location, Houston Texas. As for brightness, as bright as I can get it. Money wise, up to 1,000 - 3,500. Just a little more info. the room is a 32 x 16. But I would like a quiet proj.I really appreciate all the info. you're providing, it is really helpful Between the Marquee 9500lc and Sony G90, which has the better reliability, and which one throws a better picture?

[Nashou66]

[Nashou66]

So Joe did you get a PJ?

Nashou

[Joe Patino Jr]

Nashou66 No, not yet. Can't decide between an crt or digital. Need a pj that will light up a 10 ft. wide screen. Are there any crt's that can do it? Can the g90, or Marquee 9500 do it? If neither of them can, then I am afraid I'll have to go digital. Any recommendations? Like the smoothness, the long tube life, the black floor of the crt, but a screen of smaller size would make my ht look out of balance. joe

[Curt Palme]

You'd have to get two CRts. Cliff in Chicago (overclkr is his name here) has a g90 stack on a 10' wide screen. One g90 (or any other 9" set will do it), but two gives it that kick!

[Curt Palme]

You'd have to get two CRts. Cliff in Chicago (overclkr is his name here) has a g90 stack on a 10' wide screen. One g90 (or any other 9" set will do it), but two gives it that kick!

[Nashou66]

it depends on the room, and how bright you want it. My Room is Pitch black so I for the longest time used a single 8500 on a 12 foot screen, it did about 4 lamberts, so for me a 9500 on a 10 foot would be super bright!

But it depends on your lighting situation. if you plan to have no light while watching movies than go for it.

nashou

[CasetheCorvetteman]

Use a curved screen

[Joe Patino Jr]

Curt, I am totally new to pj's, wouldn't know where to begin to put a stack together, or what it would take to maintain it. I can just about put things together if I have a manual, or some kind of instructions, if I can read it I can just about do it. Joe

[Joe Patino Jr]

Nashou66, My room is just about complete, and like yours, it will be a total bat cave. If I can get at least 6-7ftlamberts I'll be happy. What do you think I might get out of the 9500 on a 10ft screen? Thanks Nashou66 for all the info, really appreciate it. Joe