AVS Forum Special Member
Join Date: Feb 2000
Location: California's Redwood Coast
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JVC's bulbs are listed as having a "life" of 3500 hours. My calibrator confirmed, but added "at 3500 hours, light output will be 50% of what it was when new". That makes sense to me, but I'd like to hear what other users have experienced. When the bulb for my X790r was about 5 months old, I measured it as outputting 265 Lux, which translates to 26.83 Ftl on my 110" Vutec 1.1 gain screen (see below sig for other system info). After comments from my wife that many films, particularly UHD and 3D titles, were "too dark", I remeasured the light output. The bulb now has 2300 hours on it. It now measures 214 Lux, which translates to 21.66 ftl. I run our projector in low lamp mode except for 3D titles. My calibrator confirmed that it's probably time to replace the bulb. Would any of you agree or disagree? I should add that this is our 3rd JVC projector and I'd replaced the bulb on a previous model and immediately noted the increased output. Thanks for any input.
Good Viewing,John G JVC DLA-X790 Projector, Vutec 110" (16x9) Bright White Screen, Panasonic DP-UB420, Zappiti Mini4K HDR, Zidoo Z9s, Synology DS418 NAS, Yamaha RX-A2070 AVR, Toshiba 1250 NTSC-PAL Region Free BR Player, 7 Paradigm Reference spkrs w Dual Subs, & Yamaha 6600 External Amp