Did Gravity kill my projector bulb? - AVS Forum
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post #1 of 15 Old 05-14-2014, 10:21 AM - Thread Starter
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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);

or

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

Rick
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post #2 of 15 Old 05-14-2014, 11:34 AM
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If it did it did you a favor... You will be surprised how great a new bulb looks compared to a 1000 hour one.

I change mine once a year but usually that's around 800-1000 hours.
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post #3 of 15 Old 05-14-2014, 11:49 AM
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Originally Posted by Brian Hampton View Post

If it did it did you a favor... You will be surprised how great a new bulb looks compared to a 1000 hour one.

I change mine once a year but usually that's around 800-1000 hours.

+1. I think it was just bad timing. That's a good movie IMO.

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post #4 of 15 Old 05-14-2014, 11:52 AM
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Originally Posted by Craig Peer View Post

+1. I think it was just bad timing. That's a good movie IMO.

Or the bulb wasn't designed to work in zero gravity.
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post #5 of 15 Old 05-14-2014, 12:11 PM
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I think the biggest travesty mentioned in this thread is that his guests complained about the audio being too loud. It's never too loud. smile.gif
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post #6 of 15 Old 05-14-2014, 12:35 PM
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Originally Posted by Seegs108 View Post

I think the biggest travesty mentioned in this thread is that his guests complained about the audio being too loud. It's never too loud. smile.gif

That's what I say. Of course my wife sometimes uses ear plugs ............ biggrin.gif

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post #7 of 15 Old 05-14-2014, 12:45 PM - Thread Starter
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Quote:
Originally Posted by Brian Hampton View Post

If it did it did you a favor... You will be surprised how great a new bulb looks compared to a 1000 hour one.

I change mine once a year but usually that's around 800-1000 hours.

I did replace it - that is how I determined the hours on the old bulb - then I reset the counter.

And yes - it's noticeably brighter - but I need a new projector.
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post #8 of 15 Old 05-14-2014, 12:48 PM - Thread Starter
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That's what I say. Of course my wife sometimes uses ear plugs ............ biggrin.gif

There are times when she is not home - and then RS meter hovers around 106 dB biggrin.gif
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post #9 of 15 Old 05-14-2014, 01:03 PM - Thread Starter
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Quote:
Originally Posted by Craig Peer View Post

+1. I think it was just bad timing. That's a good movie IMO.

Can't agree with you here - the only thing that could have saved that movie would have been if Sandy was captured and eaten by cannibals when she landed.
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post #10 of 15 Old 05-14-2014, 01:09 PM
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Can't agree with you here - the only thing that could have saved that movie would have been if Sandy was captured and eaten by cannibals when she landed.

maybe what he meant is it's good demo material.

I mean, I'm sure we've all watched movies with TERRIBLE plots just because the a/v presentation was so good. I would say this is probably one time where the movie would be much better than the book, haha

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post #11 of 15 Old 05-14-2014, 01:25 PM
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Originally Posted by Seegs108 View Post

I think the biggest travesty mentioned in this thread is that his guests complained about the audio being too loud. It's never too loud. smile.gif

Whoo boy. With that difference in philosophy, it sounds like I'd be the first one sneaking out of your home theater during a movie....
But then, I've got some ears to take care of. smile.gif
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post #12 of 15 Old 05-14-2014, 01:47 PM
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Originally Posted by R Harkness View Post

Whoo boy. With that difference in philosophy, it sounds like I'd be the first one sneaking out of your home theater during a movie....
But then, I've got some ears to take care of. smile.gif

Don't ever go to Burning Man then. I was woken up at 3am by a vehicle with a sound system so loud, the ground shook, and my back teeth started to rattle..............my home theater doesn't even come close! eek.gif



Maybe it was this giant boom box ! eek.gif


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post #13 of 15 Old 05-14-2014, 02:17 PM
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Quote:
Originally Posted by R Harkness View Post

Whoo boy. With that difference in philosophy, it sounds like I'd be the first one sneaking out of your home theater during a movie....
But then, I've got some ears to take care of. smile.gif

Sometimes big sound is more fun than big picture. It can give more "wow" when it really kicks in. smile.gif
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post #14 of 15 Old 05-14-2014, 02:31 PM
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Sandra's little shorts made Gravity one of my favorite movies ever... What a body ... she's AMAZING!
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post #15 of 15 Old 05-14-2014, 02:36 PM
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Just goes to show what a word like amazing can cover. My guess, just a guess, is that several posters think your amazing but for entirely different reasons that one would thing Sandra is amazing..
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