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TOPIC: led conversion

led conversion 05 Apr 2004 13:04 #21831

  • jholliger
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Anyone have the specs for the power supply for the Kelmar at1200 conversion, or specs on the dc power conversion module. $700 - $900 cost for the complete kit!!! Gotta be a cheaper way
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Re: led conversion 05 Apr 2004 18:40 #21832

  • Ken Layton
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Get the Component Engineering ASR-40 kit. It's alot cheaper than Kelmar and I'd order it from Scott Hicks' American Cinema Equipment in Portland, Oregon (www.cinequip.com)

The ASR-40 kit includes the power supply. I think the price for the whole kit is around $550 IIRC
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Re: led conversion 05 Apr 2004 19:53 #21833

  • jholliger
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Anyone using the JAXLIGHT their specs say it is fully compatable with the cyan tracks and you only replace the exciter lamp.
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Re: led conversion 05 Apr 2004 22:49 #21834

  • muviebuf
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The Jaxlight is crap. Stayaway.

AMC is so cheap they are putting these in many of their locations (particularly those old GCC houses where they don't want to spend money). There is an old saying.....pennywise but pound foolish.
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Re: led conversion 06 Apr 2004 02:53 #21835

  • outaframe
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BUF already told you what is the word on the street about Jaxlites... I don't think it's so much the fact that they're foreward scan (IF you have recent narrow slot sound lenses), but because they have such a poor signal/noise ratio due to their low output, that you have amplify the output (too close to the noise floor) AND the noise in the process, to get a usable signal... I'm intending to build my own red LED light source using the new (high output) Luxeon Star LEDs... I had been searching for months to find a really good high output red LED, when I saw a thread about these on Film-Tech... SOME will tell you that reverse scan is the ONLY way to go, but foreward scan has always worked fine (especially with narrow slit lenses), and I'm not anxious to shell out the cost of a pair of reverse scan readers AND then have to pay a tech with a scope to set 'em up, when I can do the whole thing with foreward scan, myself... IF you're technically inclinded and don't mind doing the work, hunt up that thread on Film-Tech... (It was early last Fall)
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Re: led conversion 06 Apr 2004 14:57 #21836

  • John Pytlak
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If you do decide to "do it yourself", just be sure that the red LEDs you choose have a peak wavelength of near 660nm. You will likely need to drive them pretty hard to get sufficient light, so heat sinking and cooling will be very important. If you don't have enough light, you will be fighting noise. Watch out for microphonics. It will be interesting to see if you can beat the light output of a JaxLight at less cost. There are good reasons why reverse-scan LED has become so popular.

John P. Pytlak, Senior Technical Specialist
Customer Technical Services
Entertainment Imaging
Research Labs, Building 69, Room 7525A
Eastman Kodak Company
Rochester, NY 14650-1922
Telephone: +1 585-477-5325 Cell: +1 585-781-4036 Fax: +1 585-722-7243
E-Mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Website: http://www.kodak.com/go/motion
John P. Pytlak, Senior Technical Specialist
Customer Technical Services
Entertainment Imaging
Research Labs, Building 69, Room 7525A
Eastman Kodak Company
Rochester, NY 14650-1922
Telephone: +1 585-477-5325 Fax: +1 585-722-7243
E-Mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it
Website: http://www.kodak.com/go/motion
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Re: led conversion 06 Apr 2004 16:24 #21837

Also the lasers work very well especially the ACL ones
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Re: led conversion 09 Apr 2004 01:22 #21838

  • Barry Floyd
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We put the Component Engineering ASR-40 reader in our existing Simplex SH1012 sound head, and it works beautifully. I think I paid somwhere close to what Ken stated above. We've had no problems with it at all.



Barry Floyd
Floyd Entertainment Group
Lebanon, Tennessee

Stardust Drive-In Theatre
Watertown, Tennessee
Barry Floyd
Floyd Entertainment Group
Lebanon, Tennessee

Stardust Drive-In Theatre
Watertown, Tennessee
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