is 175W enough?

[mindless_fool]

im trying to find a light source for my PJ...my lcd is about 9" and i got a dual frensel...will 175W Metal Halide be enough to power it? i got a 500W halogen out of my old OHP and put it in my box but the projected image is not bright enough for me..watchable but i want brighter

thanks

[doughboy]

I just did a quick search, It looks like a 500W halogen puts out about 9,000 to 13,000 lumens. A 175W metal puts out about the same amount or a little more. Depending on how much your halogen outputs, you may or may not see an improvment with a 175W. You will see an improvement with at least a 250W metal halide. 250W metal halides put out around 20,000 lumens.

[mindless_fool]

thanks for the reply...would 400W metal halide be overkill for a 9" lcd? im putting it for now in a big box but might want to shrink down the box..if i do..will i see my blacks become more grey..meaning too much light with a 400W MH?


and is there a way to figure out how many lumens my halogen is putting out?

[doughboy]

Look up your halogen by bulb model or OHP model. You should be able to find out how many lumens.

If you want a huge screen that can be seen even with some lights on, you might want to use a 400W. If you keep the room fairly dark and keep the screen size manageable, a 250W should due. If you’re using a reflector and condenser, I would go with the 250W. If you’re just sticking a bare bulb in your box, go with the 400W.

[mindless_fool]

great thanks...