AVS Forum Special Member
Join Date: Aug 2001
Location: BOSTON --- MA ---
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I certainly agree with the above replies as I've owned a Runco Q-750D - exactly like the Q-750i but with a separate input control box - for almost one year now and it has worked flawlessly an average of 10~12 hours per day, even during Summer months when i like to keep room temperature at 80 degrees; I occasionally check the exhaust fan temperature with my hands and every time is hard to tell the difference in temperature between the input fan and the exhaust fan, that's how cool these huge LED projectors run.
Those LED colors are something to behold : even after years of watching LED pjs often times i still find myself mesmerized by their purity and depth (and i do mean every single color of the spectrum) and contrary to video purists i watch my Runco LED pj in its native color as oversaturated as it may be, as i find that it does not impart any "sunburn" look to people's skin, foliage shows deep and varied shades of green, blue skies don't appear oversaturated, etc. I imagine that has to do with the fact that even though its measured color "points" are rather oversaturated they do so by almost the same exact amount AND location on the CIE color chart for all three R/G/B primaries.
Black level and shadow detail are excellent; I've never seen a JVC LCOS pj in person, which i imagine has killer ON/OFF contrast ratio, but keep in mind that when it comes to ANSI contrast ratio these LED pjs are unbeatable according to test reports, with Projector Central measuring the highest ANSI contrast ratio ever measured for a pj at over 800:1.
In my particular case, when it came time to get a new projector, it HAD to be a LED pj because of the way i watch TV for hours every day and i did not want to have worries concerning lamp usage/burnout/pricing, internal lamp explosion, high temperature, heat affecting other internal components after hours of constant usage, LCD / LCOS micro display failure due to internal heat, color change and drop in brightness over the lifetime of the lamp, etc.
Also keep in mind that these LED pjs should be used with screens no larger than 100"~106" diagonal to achieve a recommended onscreen brightness of 18 ft-L (on a 1.3 gain screen) as well as very low black level of 0.002 ft-L; For comparison's sake, black levels for JVC LCOS and Sony SXRD have been measured from 0.001 ft-L to as low as 0.0005 ft-L, which would technically indicate black levels twice to four times lower than 0.002 ft-L.
The only "problems" i have with my Runco Q-750D are its size and weight (full metal enclosure), but as a reviewer pointed out, after a nuclear exchange the only two things left on Earth would be cockroaches and Runco projectors...Ha !...