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emdawgz1



Joined: 14 Mar 2006
Posts: 7949


Posted: Wed Jul 02, 2008 2:06 pm    Post subject:

Dude! Losing your projector in a separation/divorce is UNTHINKABLE!!!


When i leave the PJ will be the FIRST thing on the Truck!


"FROM MY COLD DEAD HANDS!!!!!"


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garyfritz



Joined: 08 Apr 2006
Posts: 12088
Location: Fort Collins, CO

Posted: Wed Jul 02, 2008 2:10 pm    Post subject:

jamsys wrote:
Well the JVC and MITS are out the door.... Neither can throw a image large enough for my screen!!! (120") The JVC only will do 100" at any distance....

Sez who? http://www.projectorcentral.com/JVC-DLA-RS2.htm says it will throw an image up to 200", though their projection calculator says anything over about 125" starts to get too dim.
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jamsys



Joined: 29 Jun 2006
Posts: 152


Posted: Wed Jul 02, 2008 8:22 pm    Post subject:

garyfritz wrote:
jamsys wrote:
Well the JVC and MITS are out the door.... Neither can throw a image large enough for my screen!!! (120") The JVC only will do 100" at any distance....

Sez who? http://www.projectorcentral.com/JVC-DLA-RS2.htm says it will throw an image up to 200", though their projection calculator says anything over about 125" starts to get too dim.


I dont know if it's indicative w/ digitals, but I do want to have something that can do a bigger screen.. I plan on upgrading to a 160 (approx) only giving me 5" before it starts to go dim is too close of a line...

Is this a problem with all of them??
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Nashou66



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

Posted: Wed Jul 02, 2008 10:55 pm    Post subject:

Wait your confusing me...first you said this in the opening post:

jamsys wrote:
.....but we are downsizing and it is just too huge for the room...


then you say this?

Quote:
... I plan on upgrading to a 160 (approx) only giving me 5" before it starts to go dim is too close of a line...


160 is huge and needs a big room!!! which in my opinion would be plenty of room for the CRT you have now !!!

Wink Wink Wink lol

And here is my 159 inch diagonal Screen from a single marquee 8500:










Athanasios

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jamsys



Joined: 29 Jun 2006
Posts: 152


Posted: Thu Jul 03, 2008 2:28 am    Post subject:

Its not really the size of the screen as that roll's up into the ceiling.. Its the huge box hanging over our heads on the couch. It sticks out like a sore thumb... The theater room is also our living room.. Its a older house so the rooms are smaller...
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Nashou66



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

Posted: Thu Jul 03, 2008 2:30 am    Post subject:

Well how deep is the room because as I understand most digitals need a longer throw for the same size screen as a crt, so you might actually have to go to a smaller screen if you dont have the throw distance.

Athanasios

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jamsys



Joined: 29 Jun 2006
Posts: 152


Posted: Thu Jul 03, 2008 2:36 am    Post subject:

Nashou66 wrote:
Well how deep is the room because as I understand most digitals need a longer throw for the same size screen as a crt, so you might actually have to go to a smaller screen if you dont have the throw distance.

Athanasios


Room is 17 feet from the back to the front of the screen....
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Nashou66



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

Posted: Thu Jul 03, 2008 2:46 am    Post subject:

Yepp to short, for the JVC RS2 its 17 feet for a 126 inch diagnal. most others are the same.
For a 160 inch diagnol you need 21 feet

http://www.projectorcentral.com/JVC-DLA-RS2-projection-calculator-pro.htm

Athanasios

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garyfritz



Joined: 08 Apr 2006
Posts: 12088
Location: Fort Collins, CO

Posted: Thu Jul 03, 2008 2:55 am    Post subject:

I don't think throw distance is the problem. Projectorcentral's calc says the RS2 can do up to 165" with a 16' throw.

The problem is lumens. A 160" screen has 76 sq ft, if I'm figuring right. With a 600 lumen projector like the RS2, you'd only get 600/75=7.9 ftL. (Projectorcentral says 8 ftL with 157" diagonal.) That's pretty low but usable, if you don't mind a dim picture -- but that's with a brand new bulb. You'd see a big drop in light output within 100-200 hours on the bulb. 600 lumens is also uncalibrated. Calibrating the projector will knock off a lot too -- probably at least 20-30%.

So with a couple hundred hours on the bulb and a calibration, you'd be down in the 4-5 ftL range. That's way too low.

jamsys, if you want a 160" screen, and you want some "pop" in your image, I think you're going to have to find a projector with at least 1000-1200 ANSI lumens. More would be better.
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Nashou66



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

Posted: Thu Jul 03, 2008 3:01 am    Post subject:

Your right i was playing with the calculator wrong i did not notice the zoom feature, but Gary if you bump up the gain to 1.3 like my dalite screen you get 10ftl according to the same calculator.

Athanasios

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Nashou66



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

Posted: Thu Jul 03, 2008 3:03 am    Post subject:

Gary look at my screen shots above that is less than 8 ftl and i stll get nice low level detail at that brightness, if you have a completely dark room like I have but since this is his evry day room for him its too low.

Athanasios

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nettwerkjohn



Joined: 08 Mar 2006
Posts: 921
Location: Blenheim, Marlborough, New Zealand

Posted: Thu Jul 03, 2008 3:36 am    Post subject:

well, we've been super happy with the ruby since we made the jump...
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jamsys



Joined: 29 Jun 2006
Posts: 152


Posted: Thu Jul 03, 2008 4:07 am    Post subject:

garyfritz wrote:
I don't think throw distance is the problem. Projectorcentral's calc says the RS2 can do up to 165" with a 16' throw.

The problem is lumens. A 160" screen has 76 sq ft, if I'm figuring right. With a 600 lumen projector like the RS2, you'd only get 600/75=7.9 ftL. (Projectorcentral says 8 ftL with 157" diagonal.) That's pretty low but usable, if you don't mind a dim picture -- but that's with a brand new bulb. You'd see a big drop in light output within 100-200 hours on the bulb. 600 lumens is also uncalibrated. Calibrating the projector will knock off a lot too -- probably at least 20-30%.

So with a couple hundred hours on the bulb and a calibration, you'd be down in the 4-5 ftL range. That's way too low.

jamsys, if you want a 160" screen, and you want some "pop" in your image, I think you're going to have to find a projector with at least 1000-1200 ANSI lumens. More would be better.


What projectors are reccomended for that size room? I agree 600 lumens isnt going to cut it... We dont have a completly dark seperate theater room...
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jamsys



Joined: 29 Jun 2006
Posts: 152


Posted: Thu Jul 03, 2008 4:08 am    Post subject:

nettwerkjohn wrote:
well, we've been super happy with the ruby since we made the jump...


So many people say the same thing.. I know some people here hate sony, but would it work???
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nettwerkjohn



Joined: 08 Mar 2006
Posts: 921
Location: Blenheim, Marlborough, New Zealand

Posted: Sat Jul 05, 2008 12:08 am    Post subject:

the ruby throw distance is the same as a crt...
ours is mounted approx 3m from the screen to give us a 7' wide screen...
it is eye-poppingly bright on a 1.5 gain screen on the cinema setting with the iris closed to improve black level...
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