First PJ

newby · 16th January 2006, 08:14 PM

Hi there, I’m building my first PJ and I’m waiting for my pieces from DIYLABS. I just wanted to make sure of the measurements and if I need the IR glass. I will have the 250W MH kit, a 11x14 piece of Lexan, 2 Fresnel 15.5x15.5 (330 fl) a 15” LCD and the 135mm triplet (450 fl).
Light to fresnel=330mm
Fresnel to LCD=<>20mm
LCD to fresnel=<>20mm
Fresnel to triplet=450mm
I will insert the Lexan between the light and first fresnel but do I really need a IR glass.
I will have two fans to blow cool air in beside the LCD and one fan behind my light to exhaust the hot air. Will this be ok. The PJ will be from 12' to 16' from the screen and I hope to get at least a 100" screen.

Thanks

newby · 27th January 2006, 09:05 PM

Anybody?

dj_holmes · 27th January 2006, 09:32 PM

i have a 250 15" and 250 just dont cut it. if your going do use 15" i HIGHLY recommend u use 400.

v1d9uy · 27th January 2006, 09:54 PM

same

ramkishan · 30th January 2006, 11:37 PM

You may be benefitted by our experience. If you like you may see the details by clicking the following link of our web page:-
http://www.drtsolutions.com/Projector.htm

newby · 31st January 2006, 12:25 PM

Will I still have a viewable image in complete darkness with the 250 W bulb? I will have the projector in the basement with no light.

Thanks to all.

ramkishan · 31st January 2006, 01:34 PM

With 250W, LCD images will not be viewable. Its OK for Overhead Projector but not for LCD. You need 400W metal halide lamp.

newby · 31st January 2006, 02:35 PM

I guess I'll have to save up some money and purchase a 400w kit later.

swolfe23 · 1st February 2006, 06:47 AM

you can use 250 just use a reflector and us it in a dark room

newby · 1st February 2006, 01:36 PM

Thanks Swolfe23.

I will have a reflector so I hope it will be OK. My basement will be completely dark. I hope to get my parts soon so I can post pics later.

16th January 2006, 08:14 PM	#1
newby diyAudio Member Join Date: Dec 2005 Location: Ottawa	First PJ Hi there, I’m building my first PJ and I’m waiting for my pieces from DIYLABS. I just wanted to make sure of the measurements and if I need the IR glass. I will have the 250W MH kit, a 11x14 piece of Lexan, 2 Fresnel 15.5x15.5 (330 fl) a 15” LCD and the 135mm triplet (450 fl). Light to fresnel=330mm Fresnel to LCD=<>20mm LCD to fresnel=<>20mm Fresnel to triplet=450mm I will insert the Lexan between the light and first fresnel but do I really need a IR glass. I will have two fans to blow cool air in beside the LCD and one fan behind my light to exhaust the hot air. Will this be ok. The PJ will be from 12' to 16' from the screen and I hope to get at least a 100" screen. Thanks

1st February 2006, 06:47 AM	#9
swolfe23 diyAudio Member Join Date: May 2005 Location: asdfasdf	lamps you can use 250 just use a reflector and us it in a dark room

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27th January 2006, 09:05 PM	#2
newby diyAudio Member Join Date: Dec 2005 Location: Ottawa	Anybody?

27th January 2006, 09:32 PM	#3
dj_holmes diyAudio Member Join Date: Nov 2004 Location: london	i have a 250 15" and 250 just dont cut it. if your going do use 15" i HIGHLY recommend u use 400.

27th January 2006, 09:54 PM	#4
v1d9uy diyAudio Member Join Date: Oct 2005	same

30th January 2006, 11:37 PM	#5
ramkishan diyAudio Member Join Date: Sep 2005	You may be benefitted by our experience. If you like you may see the details by clicking the following link of our web page:- http://www.drtsolutions.com/Projector.htm

31st January 2006, 12:25 PM	#6
newby diyAudio Member Join Date: Dec 2005 Location: Ottawa	Will I still have a viewable image in complete darkness with the 250 W bulb? I will have the projector in the basement with no light. Thanks to all.

31st January 2006, 01:34 PM	#7
ramkishan diyAudio Member Join Date: Sep 2005	With 250W, LCD images will not be viewable. Its OK for Overhead Projector but not for LCD. You need 400W metal halide lamp.

31st January 2006, 02:35 PM	#8
newby diyAudio Member Join Date: Dec 2005 Location: Ottawa	I guess I'll have to save up some money and purchase a 400w kit later.

1st February 2006, 01:36 PM	#10
newby diyAudio Member Join Date: Dec 2005 Location: Ottawa	Thanks Swolfe23. I will have a reflector so I hope it will be OK. My basement will be completely dark. I hope to get my parts soon so I can post pics later.

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