Discussion in 'Projectors, Screens & Video Processors' started by sjb, Dec 27, 2006.
As title, anyone know how many lumens the D80 outputs ?
Interesting question - I've just had a look round and I can't find the figure published anywhere. It might make getting the right screen size/gain a little tricky unless the dealer can advise you.
RTFM may have some info on that so you could try sending him a PM (he/s a Sim2 dealer here). I did see one at the recent 'Stuff' show, and it looked plenty bright on the screen they were using there but I can't remember the size. It was probably around 8ft wide but RTFM should be able to help you more with what you need to know.
SIM2 do not publish brightness figures in their specs but I can tell you the image is more than bright enough to light up the 104" wide unity gain screen I use.
Thanks for the replies guys.
I've seen 1100 lumens mentioned once ( google search ).
As an uncalibrated figure, it might be about right.
Apart from the C3X, Sim2 seem to prefer quoting the lamp wattage - not much use to either dealer / customer !
How do you think the D80 would look on my 3.5mtr wide ( 138" ) screen ?
The screen has a gain of 1.2 .
Throw distance is 7.0mtrs ( 2:1 throw ratio ).
The room is light controlled - grey blackout blinds everywhere !
I calculate I'd need 900 real lumens to get 12fl.
What projector are you using right now? Not many home cinema projectors have that many 'real' lumens, so you might need a higher gain screen if you want to keep the size you have (I would).
No projector in use yet - new setup.
We fixed the screen to the ceiling on christmas eve - three man job !
It's an electric tab-tensioned screen from Ellie - been kicking around the house for the past year or so.
The projector will be hidden away with the other gear, in a cupboard at the back of the room, so the throw distance is pretty much fixed.
We've been using a H77 upstairs for a couple of years now, projecting onto an 8ft wide, variable aspect ratio screen, again, from Ellie.
I tried pulling the H77 back to the 7.0mtr throw to get an idea how it would look with the bigger screen - looked okay.
I was going to go for the H81, the large offset / no lens shift scuppered those plans !
If you found the image to be acceptable from the H77 then I would think the D80 would as well. I've a feeling the D80 is somewhat brighter and although you may not be getting 12FL, you may be surprised at how bright lower FL may look. One chap over on avsforum felt his projector was bright and punchy, but found it was only giving 7.5FL when he measured it with a light meter, so if you can live with the H77 (how many hours?), you should be fine (my H78 with around 9FL is fine for me, but then I prefer a dimmer image from DLP).
Give the H77 a longer viewing time and see what you think just to be sure. If you can definitley live with it (assuming the lamp is a few hundred hours old), then you should be fine with the D80 (assuming the throw is OK for you).
What do you think Jeff?
Well Gary, personally I would spec a SIM2 C3X on a screen that size which has a viewing surface area getting on for 75 square feet.
I'm going to try the H77 on the bigger screen next week.
Not sure how many hours are on the lamp, would imagine it's only 200 - 300, it's not been over-worked ! ( unlike myself ).
Jeff - I kind of expected you to recommend the C3X, need to persuade myself it's worth it. Considering the number of hours it'll probably be used, I can't help feeling it would be a waste.
Any reason why you'd spec a C3X rather than the HT3000 ?
The C3X gives a much brighter punchier picture than HT3000.
My 104" screen is only 57% of the viewing area of your 138" screen hence recommending a brighter projector. A C3X Lite on "high" lamp setting would also work well.
Sorry to jump the thread but Jeff can you confirm for me, does the C3X (non LITE version) have stepped lamp levels? Ie. full lamp mode/eco mode? So thats 2 modes or stepped even greater than this? And if so, roughly what would be the min/max outputs?
I can't seem to find this info on the Sim2 site.
The C3x has a dimmable lamp adjustment which varies the output vetween 200 watt and 250watt in 5 10watt steps.
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