DYS OHP Conversion

Led · 17th March 2005, 09:39 AM

Can I throw in a 400 Watt Metal Halide and Ballast Or will My lcd melt to death? Is it alot hotter? I'm currently using
Lamp Type HALOGEN
Base Type GZ9.5
Volts 120
Watts 600
Lumens 17000
Color Temp 3200
CRI 1.44"
Rated Life (hrs) 75
Max. Length (in) 2.5
ANSI # DYS

But It would be nice to use a 20000 hour growing lamp instead of a 75 hour lamp. The DYS bulb is about 8 inches from the Lens. Ive got a 120mm fan i the back an 80mm in the front and an 80mm over the lcd which is one inch off the lens. I can put pictures if it would help (Its very ugly lots of tape). I'd be glad to include pictures of the project but i'm not sure its worth it because i've heard the heat from the lamp I use and the heat from the Metal Halide is like night and day. But then again im totally new to this sort of thing so any help would be much appreciated.

jazzy2fives · 17th March 2005, 04:55 PM

A 400w metal halide runs cooler than a 400w halogen so definitely cooler than a 600w halogen!

Led · 17th March 2005, 08:54 PM

Thanks alot for the reply. Looks like when I have the funds i'll be getting a metal halide. Is High Pressure Sodium same temp as Halide? I saw a cheap one relatively small form factor thats white light.

Led · 18th March 2005, 08:28 AM

I had another quick question. Is there any program that can display windows at say 800X600 while the monitor is still at 1024X768. Kind of like having it in a box with black all around it. Linux does this but thats just because it cant recognize a single device on my computer. Anyway the reason I ask is I wont be able to buy a bigger lense for a while and mine is only 10 inches with a 15 inch monitor on top.

nexarius · 20th March 2005, 10:46 PM

HPS (High Pressure Sodium) is very different to Metal Halide. It is a much oranger light, and is totally unsuitable for projectors. The ballasts are also normally different as well.

mdmcginn · 24th March 2005, 08:50 PM

However, I've seen a couple of bulb/socket/ballast kits for sale that are for conversion from high pressure sodium to metal halide. I assume there is some advantage (price?) in using the HPS ballast with a mogul base conversion socket and a MH bulb. This is the special that atlantalightbulbs is running, for example.

Led · 24th March 2005, 10:12 PM

Thats the one I just bought I'll post a reply once I get it up and running (maybe this weekend) about the quality. I'd take pics but I only have a .3 MP cameraphone so its probably not worth it.

nexarius · 24th March 2005, 11:04 PM

As far as I know, the HPS conversion bulb (MH in disguise) has excellent colour rendering properties and is excellent for this projector.

Ballasts tend to be easier to get hold of for HPS, but I dont know of any cost differences.

mdmcginn · 14th April 2005, 03:57 PM

Well LED, did you get it running? I'm reluctant to try it yet.

17th March 2005, 09:39 AM	#1
Led diyAudio Member Join Date: Dec 2004 Location: USA	DYS OHP Conversion Can I throw in a 400 Watt Metal Halide and Ballast Or will My lcd melt to death? Is it alot hotter? I'm currently using Lamp Type HALOGEN Base Type GZ9.5 Volts 120 Watts 600 Lumens 17000 Color Temp 3200 CRI 1.44" Rated Life (hrs) 75 Max. Length (in) 2.5 ANSI # DYS But It would be nice to use a 20000 hour growing lamp instead of a 75 hour lamp. The DYS bulb is about 8 inches from the Lens. Ive got a 120mm fan i the back an 80mm in the front and an 80mm over the lcd which is one inch off the lens. I can put pictures if it would help (Its very ugly lots of tape). I'd be glad to include pictures of the project but i'm not sure its worth it because i've heard the heat from the lamp I use and the heat from the Metal Halide is like night and day. But then again im totally new to this sort of thing so any help would be much appreciated.

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17th March 2005, 04:55 PM	#2
jazzy2fives diyAudio Member Join Date: Mar 2005 Location: 2	A 400w metal halide runs cooler than a 400w halogen so definitely cooler than a 600w halogen!

17th March 2005, 08:54 PM	#3
Led diyAudio Member Join Date: Dec 2004 Location: USA	Thanks alot for the reply. Looks like when I have the funds i'll be getting a metal halide. Is High Pressure Sodium same temp as Halide? I saw a cheap one relatively small form factor thats white light.

18th March 2005, 08:28 AM	#4
Led diyAudio Member Join Date: Dec 2004 Location: USA	I had another quick question. Is there any program that can display windows at say 800X600 while the monitor is still at 1024X768. Kind of like having it in a box with black all around it. Linux does this but thats just because it cant recognize a single device on my computer. Anyway the reason I ask is I wont be able to buy a bigger lense for a while and mine is only 10 inches with a 15 inch monitor on top.

20th March 2005, 10:46 PM	#5
nexarius diyAudio Member Join Date: Oct 2004	HPS (High Pressure Sodium) is very different to Metal Halide. It is a much oranger light, and is totally unsuitable for projectors. The ballasts are also normally different as well.

24th March 2005, 08:50 PM	#6
mdmcginn diyAudio Member Join Date: Mar 2005 Location: St. Louis, MO	However, I've seen a couple of bulb/socket/ballast kits for sale that are for conversion from high pressure sodium to metal halide. I assume there is some advantage (price?) in using the HPS ballast with a mogul base conversion socket and a MH bulb. This is the special that atlantalightbulbs is running, for example.

24th March 2005, 10:12 PM	#7
Led diyAudio Member Join Date: Dec 2004 Location: USA	Thats the one I just bought I'll post a reply once I get it up and running (maybe this weekend) about the quality. I'd take pics but I only have a .3 MP cameraphone so its probably not worth it.

24th March 2005, 11:04 PM	#8
nexarius diyAudio Member Join Date: Oct 2004	As far as I know, the HPS conversion bulb (MH in disguise) has excellent colour rendering properties and is excellent for this projector. Ballasts tend to be easier to get hold of for HPS, but I dont know of any cost differences.

14th April 2005, 03:57 PM	#9
mdmcginn diyAudio Member Join Date: Mar 2005 Location: St. Louis, MO	Well LED, did you get it running? I'm reluctant to try it yet.

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