Should I look into this projector??

Status
Not open for further replies.
Jump to Latest
M

mikejz84

Member
Joined 2002
#1
I just came across a projector for sale. It is 640x480, 170 lumens and powered by a FXL bulb. Just woundering what you guys think. Should I make the guy an offer, and what would be a good price for this projector? Also is 170 lumens good enought for say a 110" image in a blacked out room?
 
#2
It might help if you told us WHAT Projector you have access to.......

zardoz



mikejz84 said:
I just came across a projector for sale. It is 640x480, 170 lumens and powered by a FXL bulb. Just woundering what you guys think. Should I make the guy an offer, and what would be a good price for this projector? Also is 170 lumens good enought for say a 110" image in a blacked out room?
Click to expand...
 
#3
arent FXL's 410 watts? how come its only giving 170 lumens?
i've heard that for RETAIL projectors (non OHP) should be700-800 LUMENS minumum..i HIGHLY doubt that 170 lumens will be even brighter than a household 100 inch tv...IMHO

i wouldnt pay more than 50$ bux for it.

oh, and fxl's last 75 hrs...i never heard of a retail projector with such bulbs. tell the guy to give you a demonstration of the product if he sez no then you know its crap.

i CAN be wrong...



Jimmy:clown:
 
#5
LOL @ negative design......if this unit goes for $50.00 I'll take 4 of them 😉

The projector uses a 410 watt lamp..I'm betting it will look great...I use a 360 watt lamp in a junk OHP and the projected image is more than just OK.

Watts: 410W
Volts: 82V
Amperage: 5A
Base: GY5.3 Oval, 2-Pin; flat .7mm x 2mm; 5.3mm apart (found on MR bulbs)
Life: 50 Hours
Glass Shape: MR16
Filament: CC-8
Temperature: 3300K
Color Rendering Index: 100
Burning Position: S90 Any Position
Maximum Length: 1¾ Inches

Notes: Halogen Reflector Multi-Facet
 
#9
mikejz84 said:
I just came across a projector for sale. It is 640x480, 170 lumens and powered by a FXL bulb. Just woundering what you guys think. Should I make the guy an offer, and what would be a good price for this projector? Also is 170 lumens good enought for say a 110" image in a blacked out room?
Click to expand...

Well, I dont have much to add what people have already answered you but my own opinion and a kind of a closure.

What I saw on the website about this projector were facts that seem to make this really REALLY poor example of a LCD projector. It outputs 140 lumens, not even the 170 lumens you were told. 140 lumens is not good at all, it is not good even in absolutely darkened room. And in the end I am quite sure that the light from the quite powerful 400w halogen leaks from the projector from some point in the case and illuminates the room just that much that the room is not pitch black, it'll probably be more or less so that you can quite well see where you are walking and so on.
Which is ok darkness for a pleasurable watching if you have at least 300-500 lumens output but... 140 lumens... naah.
Also, this 140 lumens is produced of a light of a over 400w halogen. That kind of a halogen produces over 15000 lumens of light. So... under 1% of the light is actually let trough the projector... this means that even if you'd retrofit the thing with a really high power metal-halide that produces 40000 lumens you'd still be stuck with a brightness of 400 lumens, which is about ok but hey... doesn't sound very smart to me to cool down that monsterlamp and listening the sounds of fans and still be in fear for the lcds/lcd heating up too much because you are having a extremely high power lamp inside the thing. And in the end the 400 lumens is not reeeeeally good either, I think something between 500-1000 lumens is quite the brightness we should be aiming to have nice bright image even at daytime with some curtains on.
And the resolution is 640x480. It's ok for DVD/VHS/TV but if you want to use this thing with a PC then that sucks also.
Humm. What would I pay for that thing... what would I pay... the lamps are about 10 bucks each and last about 75h, so that's about 13cents per hour of watching.. hmm.. and it probably makes hell of a noise cooling that 400w lamp... maybe $200? Maybe not even that? The thing seems to be bad for using in its standard setup and poor for retrofitting for it looses so god damn lots of lumens in the process of making the light a projected image.

Regards
HB
 
#11
Negative Design said:
great info HB, can you post the link you seen this projector at?
thanks.
Click to expand...

Eeeh you posted the link http://www.gsilink.com/user/modtech...telexp170v.html yourself?

By the way, I was a bit hasty about my statement. I checked out that FXL-bulb and god damn what kind of a lazy *** halogen is that??? It has an output of a 640 lumens?! That is just hilarious, 410w halogen that has an output of 640 lumens. Well. Based on this new information the projector that we are talking about does not sound that bad at all! I'd say it is quite ok for retrofitting purposes! It lets about 22% of the light trough, and that is VERY good I'd say. That's about 1000 lumens EVEN WITH a 5000 lumen 300 hour 150w FDV halogen LAMP (if you have a very good reflector to collect about all the 5000 lumens for it that is)! Even if the reflector is **** and all that and 50% of light would be lost at that point it means 500 lumens output, so... if you get this one cheap then it might be a bargain after all, at least if you are going to fit it with a new lightsource.

Regards
HB
 
#15
Negative Design said:
HB,
How much light is lost when using an OHP/LCD?
Click to expand...

Well, I just did some calculations in another thread where Goldmoth were wondering poor results with a 400w metal-halide and 15" I-O Data desktop LCD. He told that the result was "not bright" and so I have to assume that it means no more the 250 lumens of output brightness in the end. This means that at least with this setup which LCD is meant for desktop monitor the loss is about 99,5%. How much of that is lost by the reflector or the optics, I don't know, but I think most of loss is happening in the point of the LCD.
The loss is much lower with LCD-panels meant for projecting images but I cant remember exact figures of my recent calculations concerning some panel setup results posted on this forum. I think it was something like 90% loss of light or so (10x light let trough compared to the examples I-O Data desktop LCD!).

Regards
HB
 
#16
i read that post about goldmoth, i posted on that thread earlier.
I plan to use an OHP thats SUPPOSE to output 4000-8000 LUMENS its an Apollo A1-1000 it uses 600 watt DYs. do u think this is a good OHP? its an odler model im thinking much light will be lost.

thanks in advance.
Jimmy
 
#17
Negative Design said:
i read that post about goldmoth, i posted on that thread earlier.
I plan to use an OHP thats SUPPOSE to output 4000-8000 LUMENS its an Apollo A1-1000 it uses 600 watt DYs. do u think this is a good OHP? its an odler model im thinking much light will be lost.
Click to expand...
Well if the manufacturer has the 4000 lumens on the specs then it very probably has the output of that (and it is not very "magnificent" output with a 600w lamp but do think that 4000-8000 lumens could be right). To play safe, buy a LCD-panel that is meant to be put on top of an OHP to gain that ONLY about 90% loss of lumens --> 400-800 lumens WHICH IS OK, believe me. With those monitor LCD's I think you cannot be sure to get any decent output lumens out of your projector like we have seen here on this forum.

Hey Mike, I checked the manual. Seems otherwise ok but that 100:1 contrast ratio is quite bad, this is probably the reason it can output the 140 lumens of the lamps original 640 lumens. So don't wait for miracles and do not pay too much for the thing.

Regards
HB
 
#18
I think I would be willing to spend $130-$140, and maybe replace the light source. I am woundering if there are any substatute halogens bulbs of the same voltage/size that I could place in there to boost the light output. Are you sure they are only 660 lumens, I really can't think of anyway that that is true, I mean a standard 100watt lightbulb is about 1,000 lumens!
 
#19
HB,
the specs didnt say the LUMENS output the 4000-8000 is my guess-timate of what it would be.Since 410 watt fxl are usually 4000 lumens, the 575 watt halogen is 73000 lumens, i thought this DYS 600 would be in between those numbers or higher. since its an old OHP i dont know if it will come close to that.If u check my other thread titled "APOLLO a1-1000" i have some more info and pix. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=14968&item=3001743890&rd=1

Thanks.
jimmy
 
#20
mikejz84 said:
I think I would be willing to spend $130-$140, and maybe replace the light source. I am woundering if there are any substatute halogens bulbs of the same voltage/size that I could place in there to boost the light output. Are you sure they are only 660 lumens, I really can't think of anyway that that is true, I mean a standard 100watt lightbulb is about 1,000 lumens!
Click to expand...
Well, at least FXLs manufactured by Osram Sylvania are 640 lumens if the specification sheet is to be believed. I am pretty baffled about that myself. It is ridicilous. The one that philips makes differentiates only a bit, it has shorter average life but they do not give information about the brightness of theirs. FXL produces by GE lightning has even shorter life than philips or osram one (pityful 38 hours).
In the other hand (to make things really messy)... I checked out for some devices (mainly OHP's) that use FXL and... I find output lumens of 4000 and so on!
I think that the spec sheet of osram is defect. The FXL lamp should produce at least something like 6000-10000 lumens for those ohp's to output 4000 lumens.

So. In the end it seems that this projector sucks after all. The contrast ratio sucks. It seems to drain at least 98% of the light the lamp offers to the projector. Really sucky.

Regards
HB
 
Status
Not open for further replies.
Top Bottom