JVC RS4500 (native 4K laser projector)

[AVSCraig]

I'm not quite at 1700 hours in nearly 3 years. At my current rate of watching my RS4500 ( about 500 hours a year - same as every year since 2003 ), I estimate my RS4500 will lose 10% brightness since it was new - in another 10 years. HA ! I love this projector !

[AVSMike]

RS4500 B-stock available. First one in nearly a year. These do not come around very often. Call us for details.

[AVSCraig]

I just got finished re-watching The Pacific on Blu-ray. What a great series ( re-watched Band Of Brothers just before that ). I was reminded how great even 1080p looks on this projector ! 

Nearly 4 years of outstanding movie watching - so far ! 

[AVSMike]

JVC now offering a short throw lens option on the RS4500/RS3000. With this lens the throw ratio for 16:9 is now 1.00-1.39:1.

[alangouger]

That's a nice addition. Typically a shorter throw lens will give up a little contrast. It will be interesting to see where the specs land. Will have to wait for someone to order one.

[AVSCraig]

I took some measurements last night with my Sper Scientific 840020C Lux Light Meter. It's really difficult to do apples to apples comparisons, since I originally used an AEMC CA813 light meter. Add to that 3 different calibrations over 5 years by 3 different calibrators, and comparisons are tough.

Chad B. calibrated my RS4500 on 12 - 12 - 2017, and read 18.6 foot lamberts for SDR in low laser off my 122" diagonal 16:9 Cima Neve screen after calibration.

I have another reading from an unknown date a couple of years ago, that might be after Kris Deering calibrated my projector, or before - but it was a while ago -
low laser - 177 lux / 18.09 foot lamberts
mid laser - 304 lux / 31.07 foot lamberts

Yesterday's readings -
low laser - 180 lux / 18.40 foot lamberts
mid laser - 300 lux / 30.669 foot lamberts

I forgot to note the hours, but I'll try to tonight - somewhere around 2550 hours. I will have had my RS4500 for 5 years next week.