DIY backlight for RPTV?

Discussion in 'Archived Threads 2001-2004' started by Conrad, May 30, 2001.

  1. Conrad

    Conrad Auditioning

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    OK, I've had the new 46807 for a couple of weeks. I am finishing up the base stand (I decided to build my own) and now it is time to put together a backlight. Anyone know of a site or thread that discusses how to build one with the proper color temp., etc.?
    Thanks,
    Conrad
     
  2. Conrad

    Conrad Auditioning

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    Bump.
     
  3. Alan Wild

    Alan Wild Stunt Coordinator

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    Allow me to quote myself from hometheaterspot.com:
     
  4. Tom_F

    Tom_F Auditioning

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  5. Conrad

    Conrad Auditioning

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    Thanks for the information. I am off to Home Depot today to continue the search. I looked last week, but found nothing appropriate. Now that I have better data (serial numbers) I hope to be more successful. On other suggestion was to look for bulbs at an aquarium store. I'll probably check that out too.
    Others have also recommended the ready-made product at www.cinemaquestinc.com/ideal_lume.htm While I think that has some possibilities, I think I would be more likely to just buy the replacement bulb and then pick up a fixture at Home Depot.
     
  6. Guy Kuo

    Guy Kuo Supporting Actor

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    This is THE bulb you want. It is probably the closest to D65 that you will find. It is only slightly bluer than D65, but much better than anything else I've seen.
    http://www.truesun.com/lumichrome1xx.htm
    Not only will this work well for backlighting, it can serve as a nice reference for the proper color of white.
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    Guy Kuo
    www.ovationsw.com
    Ovation Software, the Home of AVIA DVD
     
  7. Timothy Jeandron

    Timothy Jeandron Auditioning

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    Are there any RFI problems with running a florescent light attached to the back of an RPTV, either with the TV or with the center channel speaker?
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  8. Alan Wild

    Alan Wild Stunt Coordinator

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    I may have been mistaken about which buld I purchased.... it may have been the F20T12/D talked about in the Keohi HDTV article. I definately found the buld in the same area that the individual in the article did.... it was just a cut open case and I walked out with the bulb in hand.... no cardboard wrapper or anything.
    As far as RFI goes... my fixture is on the floor behind the set shinning upwards. And my TV sits on a stand at least a foot higher. I have never noticed any sort of problems with the light, but I do make a point of always callibratiing with the light ON and the room dark just like it would be watching movies. I would hate for ambient room lighting to cause me to callibrate things wrong. [​IMG]
     
  9. Lee Bailey

    Lee Bailey Second Unit

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    Guy, that lumichrome 1XX light is the one used by cinemaquest. There are places on web where you can buy them but they usually want you to order them in packs, with 4 being the minimum amount. They are rated at 6500K with a CRI of 98!(that's 98 out of a 100) You can also order the bulbs from cinemaquest, as well as a dimmer in case the light is brighter than your set is actually set to. I should be seeing mine show up next week.
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    The Bailey's Web Page and Home Theatre
    The Bailey's DVD Collection
     
  10. Jay Mitchosky

    Jay Mitchosky Producer

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    Moving to TV Forum.
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    My Home Theatre Pictures...
    "You're no mesiah. You're, you're a movie of the week. You're a ... t-shirt, at best."
     

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