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Sim2 Lumis Owners Thread - Page 62

post #1831 of 1953
Quote:
Originally Posted by thebland View Post

Well, in reading the post that Jim linked to, I think i want the whole housing and bulb - in case the housing is damaged when removing. But Thanks!
Good to know I can leave it up.
Is the one screw hole there to the left on the light part of the chassis the bulb area?

Yes, that's the one. The cover will slide a little to the left as pictured.
Don't worry about the housing, it's mostly plastic.
You could drop one of the three screws holding it in place into the projector as you are removing them though.smile.gif
post #1832 of 1953
hi jeff,

I think you are right, that´s the lamp door!
don´t forget to reset the lamp timer after replacing the lamp!

regards
m
post #1833 of 1953
That's correct Jeff, and the lamp should not be that difficult to remove. I think the problem "O" had in that link is unusual.


Jim
post #1834 of 1953
This is from a recent post on the " DYNAMIC BLACK problems with BENQ W7000 " thread ( 3K and up section ) -
Quote:
Quote:
Turn off dynamic black.

Even in my $40K SIm2, it is not ready for prime time and mine is always off.

Really Jeff? I've put about 1100 hours on mine. I can only notice it misbehave on a couple of scenes in a couple of movies out of 450 movies. And white ending credits on a black screen at the end of a movie ( no biggie ). You might want to try coldmachines re-set for it.

So, I thought I might re-post Coldmachines fix for the dynamic iris on the Lumis, in case anyone missed it and needs it ( its buried way back in this thread somewhere ) -

IRIS PUMPING FIX
My own DI became slightly visible a while back, and a hard rest took care of it.

I only mention this as I was given the following advice, if a straight deselect/reselect of the DB fails to clear the issue.

Assuming the DI is selected and the unit is powered up.... De-select DI and power down the entire unit, including the Host. Disconnect from mains.

Reconnect and power up. Select DB to on. Power down as before, including mains disconnection.

Reconnect and power up. Done.

smile.gif
post #1835 of 1953
I love my lumis... I have been working on a home gym project for the last 3 years. Is there anything on the horizon that will significantly outperform the lumis, in that price range? Finally finishing the gym project in the beginning of Feb... time to go back to Home theater and catch up, but doesnt seem like I missed anything the past 3 years.
post #1836 of 1953
Quote:
I love my lumis... I have been working on a home gym project for the last 3 years. Is there anything on the horizon that will significantly outperform the lumis, in that price range? Finally finishing the gym project in the beginning of Feb... time to go back to Home theater and catch up, but doesnt seem like I missed anything the past 3 years

IMO not really. I'm holding onto mine until SIM comes out with a 4K laser Lumis.
post #1837 of 1953
Hi Everyone

I just changed my Lumis bulb. I have a very silly question. When you change "Variable Iris" settings in the menu from 0 to 100, are we opening up the iris from minimum to maximum i.e. increasing the light output, or is it the other way around? When iItry changing the variable iris , I dont see much change in aperture or light output, although I do hear iris moving.

mani
post #1838 of 1953
Quote:
Hi Everyone

I just changed my Lumis bulb. I have a very silly question. When you change "Variable Iris" settings in the menu from 0 to 100, are we opening up the iris from minimum to maximum i.e. increasing the light output, or is it the other way around? When iItry changing the variable iris , I dont see much change in aperture or light output, although I do hear iris moving.

mani
As I understand it, its a trim iris ( not related to the Dynamic iris ). Set it at 100 if your new bulb is too bright ( if I remember correctly - my projector is off after a long day of movies ).
post #1839 of 1953
I just put a new OEM lamp in my spare original housing. Bright is good !! biggrin.gif
post #1840 of 1953
What's the difference between the Lumis 1080p and C3X 1080p?..
post #1841 of 1953
I think the C3X is discontinued, replaced by the Lumis Uno -http://www.sim2usa.com/home/us/grand-cinema-line-usa
post #1842 of 1953
The two biggest differences between a Lumis and a C3X1080 is (respectively)...

Bulb: 280watt max VS. 250watt max
Dynamic Iris: Has one VS. Doesn't have one
post #1843 of 1953
Just FYI - the Lumis Uno and the Lumis Solo Uno do not have a dynamic iris either.
post #1844 of 1953
What's a Lumis SOLO UNO? There is an UNO and there is a SOLO. The Lumis 3D UNO has 10bit processing and 120fps and no dynamic black. The SOLO has 12bit processing, 144fps (triple flash) and a proprietary dynamic black that is not a DI. The lamp in the UNO is 260w; the lamp in the SOLO is 280w. They both use full-size .95 DC4 chips.
post #1845 of 1953
Sorry - meant to say Lumis 3D Solo uno - http://www.sim2usa.com/home/us/content/lumis-3d-solo-uno
post #1846 of 1953
Pete, thanks for pointing out my mistake saying Lumis uses a dynamic Iris when in actuality it uses Dynamic Black. -Paul

PS: Since it was mentioned, the C3X1080 also uses full size .95" DC4 chips
post #1847 of 1953
Hi Guys,

today I wanted to recalibrate my lumis as it has 770 hours on the bulb. As it looked dim I also measured 100 IRE and found only 3,9 fl on my 120" clear pix2 screen (calman with C6 sensor@280W setting, iris open) - that is very low light, dont't you think? Has anybody measurements near that hours on his lumis to share? I think that this is too early to loose that much light power?
post #1848 of 1953
What did you measure with the same instrument when it was new? When comparing brighntess levels from meters not designed explicitly for illuminance or luminance mesurment, particularly tristimulus devices, I recommend using them for comparitive datapoints only, not absolute. A nitpick perhaps, but if you are pointing the meter toward the PJ (assume you are), then you are measuring ftc not ftL. Multiply times screen gain to get ftL.
post #1849 of 1953
hi,

I meassured 16fl@90hrs. calibrated with the same sensor!
post #1850 of 1953
Then about a 75% drop over 800 hours does seem high to me.
post #1851 of 1953
that´s my point!
maybe some of the other lumis owners can provide some numbers, or when they had to change their lamps?

regards
m(c)
post #1852 of 1953
Quote:
that´s my point!
maybe some of the other lumis owners can provide some numbers, or when they had to change their lamps?

regards
m(c

Sure. I got one of the very first Lumis Host units. My first lamp wasn't nearly as bright as I had hoped. I got it in May of 2009. Initially, I was only getting 603 lumens on the lowest power setting. Then, someone discovered that using HDMI input # 3 on the Host resulted in a brighter picture. Doing that gave me 742 lumens in the lowest power setting ( and about 18 foot lamberts off my screen ).That was back in Feb. of 2010.
At some point I measured -
220 watts = 636 lumens
250 watts = 717 lumens
260 watts = 742 lumens
At 442 hours with 270 watts I measured 852 lumens. 4 - 14 - 2010

I have other measurements, but I wasn't good about writing down lamp hours. I was more concerned with it being too dim and time to change the lamp - hours be damned ( probably from my days of owning an Optoma H79 - damn things were dim at 370 hours !! ).

I got a new lamp on 7 - 28 - 2010.
At 4 hours, with 230 watts , I measured 1051 lumens !!
At 745 hours with 280 watts, I measured 860 lumens.

On March 6th I decided to take my current lamp out and save it for a spare, and try installing an OEM lamp in my first housing, since that lamp is too dim for my tastes anyway. It was easy. So far I have only measured the initial output - 260 watts = 1076 lumens. The lamp seemed to actually get a little brighter once it had a few hours and settled in. I'll try taking a measurement tonite if I watch anything.

That's all I've got. If you need a new lamp - call me - I might have a nice surprise for you !
Edited by Craig Peer - 6/6/13 at 12:01pm
post #1853 of 1953
Hi Craig,

thank you for your infos! I´m courious how bright my picture will be with a new lamp - hopefully even brighter than before (according to your findings) ;-)

M(c)
post #1854 of 1953
Well, Art S. around these forums found a 10% variation in the brightness of new lamps, but certainly a new lamp will be brighter then what you've got !! smile.gif
post #1855 of 1953
Quick question for the Sim2 owners.
I was wondering how the 3 Chip DLP compares to the more recent LCD models? Are there models that you think offer enough of an increase in performance to move to a new model?
I've preferred the sharpness of the 3Chip DLP but the Sim2's were out of my range at the time and now I'm revisiting.

Thanks for any feedback.

-Mike
post #1856 of 1953
If you mean compare a Lumis to say an Epson, The Lumis should cleanly best the LCD on PQ. Although I wouldn't say 3 chip DLP in particular (vs. say single chip DLP) would be the king of sharpness, due to the nature and inaccuracies of convergence on 3 chip devices. I have a 3-chip DLP in my theater if you'd like to call sometime and chat about it. PM me if you like.
post #1857 of 1953
Thanks for the response and offer. Have you compared the Lumis to recent JVCs? Have you determined what it would take you to move from the Lumis (new tech or HUGE leap in PQ?)

I'd hate to finally get a 3Chipper and then all of the sudden something new comes and I die from buyers remorse...again smile.gif

-Mike
post #1858 of 1953
Quote:
Originally Posted by MikeRich View Post

Thanks for the response and offer. Have you compared the Lumis to recent JVCs? Have you determined what it would take you to move from the Lumis (new tech or HUGE leap in PQ?)

I'd hate to finally get a 3Chipper and then all of the sudden something new comes and I die from buyers remorse...again smile.gif

-Mike
Yes.

It would take a huge jump and at a reasonable cost to give me upgradeitus.

There will always be something better, but typically those things happen in increments that would not drive one to upgrade a vested device, or the new thing is so expensive when released you would not move anyway. Of course that's a general statement and it would depend on your personal goals, preferences, and budget.
post #1859 of 1953
Quote:
Quick question for the Sim2 owners.
I was wondering how the 3 Chip DLP compares to the more recent LCD models? Are there models that you think offer enough of an increase in performance to move to a new model?
I've preferred the sharpness of the 3Chip DLP but the Sim2's were out of my range at the time and now I'm revisiting.

Thanks for any feedback.

-Mike

There is no new projector I'd currently buy to replace my Lumis. I'll wait for a 4K laser version of the Lumis. The current Lumis 3D solo ( or Super Lumis ) is better than my current model, but I'm not inclined to spend the money to upgrade. I'm finding much more " bang for the buck " improvement by working on my theater room ( making the walls / decor darker and less refective ) and my audio system. Yes, I still love my Lumis. smile.gif
post #1860 of 1953
As noted above, I have yet to hear of a projector that would make me want to replace my Lumis.


I'm very impressed with italian products lately. Next up will be a trip to Europe to demo www.panattasport.com They make several pieces that have no equivalent. The Incline flight machine is a good example.
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