I was watching the movie Gravity on my aging Sharp XV-Z12000, in a 15 'x 24' x 7'end-14'center room with very good main speakers (GR-Research designed, AV123 LS-6s) and a DIY Rythmik 2x8" (dual 300W amp) subwoofer. My lamp had 1049 hours and is always run on low lamp.
I was watching this movie with my wife at moderate audio level. (70 dB as indicated by my RS meter using the pink noise from my AVR). I purposely set the subwoofer 4 dB below balanced so my wife would not complain about the bass being too high - as I expected lots of LFE with this movie.
So during the scene where my girl Sandy Bullock is trying to get to the Soyous docked to the ISS, there is a lot of low frequency sounds. The room was shaking a lot (way more than I expected-considering the volume settings), and I was considering turning down the subwoofer.
Then my wife (and her brother) complained it was too loud, so I got up and turned off the subwoofer. And just to prove it was not the subwoofers fault, I backed up the movie 30 seconds and watched the scene again. Nearly the same room shaking experience (those LS-6s are good and go quite low).
Finally, simultaneous with Ms. Bullock closing the Soyous hatch - POP - the bulb blows.
So my question to you is what do you think blew the bulb?
1) age and hours (7 years and 1049 hours);
2) the room shaking made it vibrate and go pop.
The manual says change the bulb after 1900 hours (or when you notice the picture deteriorate) and the bulb service life is 2000 hrs, but may be less than that.
Thanks for your thoughts