Originally Posted by Ron Jones
I assume you did set the reference white level using the flashing bars test pattern on the AVS disc and adjusting the projector's contrast control before you measured the light output. It does appears you did the measurement correctly. As for the bulb warranty, in the USA the replacement bulbs typically only carry a 90 day warranty and the original bulb that comes in the projector typically no more than 1 year. If you are in the UK the warranty may be longer so you should check the paper work that came with the replacement bulb.
I guess the most basic question is how bright was the projector when it was new? Does it seem much dimmer now? Very few AVS members would want to use the Dynamic mode on the Epson projectors because it has poor colors and the other more accurate modes should still provide adquate light output for use on moderate size screens in rooms with good light control. I use my 6500UB on a 120 inch screen with a gain of 1.1 and I have calibrated for grey scale/color points/gamma/etc. and with 500 hours on the bulb it still is bright enough (with about 500 lumens output measured from the projector). I realize the 6500UB series would be expected to have a little more light output than your earlier model, but if your projector has always been dim (even when new) then perhaps there is a some problem with the projector itself and not just a bulb issue.
Yes I did the black/white levels - they were alright - i left the white slightly less bright as they say on video so you can see more grey stripes flashing up to 250.
I seem to remember on the original bulb it dimmed a lot before it went and then the second bulb was brighter when I installed it, but I never had a lightmeter at that time so it is highly subjective how much brighter it was. I would love to be able to measure a brand new bulb in it now to see.
What I was really wondering was were my measurements correct after seeing all the www.projectorreviews.com
reviews and lumen measurements in the reviews of newer Epsons.
I mean according to http://www.projectorreviews.com/epso...erformance.php
it looks like the 8700UB is 4 times brighter than mine in Dynamic mode (1100 vs 256 lumens) and nearly 9 times brighter in my preferred quiet Cinema Black 2 mode (380 vs 50 lumens)
It appears that the 8700UB's Cinema Black 2 mode - it's DARKEST mode - is much BRIGHTER than my BRIGHTEST mode!! (380 vs 256 lumens)
How could this be possible?
Does 9 times as much lumens appear 9 times brighter or is it some sort of logarithmic scale?
Also if you look at the bulb accessory page of Epson projectors you will see there is basically only two bulbs they use - the "49" and the "39". The 49 is used in the top ones and mine is the 39. There can't be that much difference between them.
It's also interesting to note that the SAME 49 bulb is used in three different projectors that are marketed as being 1600, 1800 and 2000 lumens light output respectively.... is Epson pulling more fast ones
re: warranty see here on EU site http://www.epson.eu/Projectors/Epson...500/Tech-Specs
- it says projector & lamp are 5 years - probably only if you buy from official Epson dealer. Thing is they appear to be WAAAY dearer than EBay sellers from USA... eg. 4,891.21 USD is UK price of EH-TW5500 which is equivalent to PC 9500 model in USA...