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Showing related tags and posts for the ETC Luminaires/Fixtures group. See all tags in the site
  • Re: HPL 575/115 vs. HPL 575/120

    Hi Derek - the difference is - the filaments are sized slightly differently so that one achieves rated performance at 115V, the other at 120V. Historically, the 115V version came first - designed specifically for theater applications where most lamps are at the end of multiple feet of cable with multiple...
    Posted to Source Four and Revolution (Forum) by Tom Littrell on 11-17-2008
    Filed under: HPL lamps Source 4 par
  • Re: HPL 575/115 vs. HPL 575/120

    I would add that some sites that use ETC Sensor Dimming will set the output regulation to 115V or so and then use 120V lamps. (A little less bright but longer lamp life) To answer your question directly: In a perfect world, 2 lamps with only a difference in voltage rating will give the same performance...
    Posted to Source Four and Revolution (Forum) by mmeskill on 11-17-2008
    Filed under: 575W HPL lamps Source 4 750W, HPL lamps Source 4 par
  • Re: HPL ceramic heat sink

    Hi - This might be as much socket related as lamp base related. The old TP22 - the Source Four socket for the last 200 years - will wear out eventually and not do a great job holding the lamp in the PAR socket. In the last 2-3 years, we have gone to using either a Bender & Worth socket or a new Sylvania...
    Posted to Source Four and Revolution (Forum) by Tom Littrell on 06-20-2008
    Filed under: 575W HPL lamps Source 4 750W, HPL lamps Source 4 par
  • Use a 750W bulb in a 575W Fixture?

    I am a volunteer at a community theater and we are on a pretty tight budget (go figure). Is it safe to use a 750W bulb in a 575W S4 Ellipsoidal fixture. We need more illumination but don't have the money for new fixtures and it would help if we could get more light out of the fixtures we have. At...
    Posted to Source Four and Revolution (Forum) by Bill Kersh on 01-16-2013
    Filed under: HPL lamps Source 4 par
  • HPL ceramic heat sink

    Is anyone else out there having difficulty with the new HPL lamps that have a ceramic heat sink? I can't seem to keep them seated in the Source 4 par lamp socket. The metal heat sink lamps work geat but are oddly a bit harder to come by.
    Posted to Source Four and Revolution (Forum) by SBC on 05-23-2008
    Filed under: HPL lamps Source 4 par
  • Source 4 Beam Spread Question

    I read the KnowledgeBase Article: Source Four Beam Spread Quick Sheet. The sheet states tha a 36 degree S4 will throw 50fc at 45'. Is this the same for a 575W and a 750W?. Thanks
    Posted to Source Four and Revolution (Forum) by Bill Kersh on 01-16-2013
    Filed under: HPL lamps Source 4 par, Source 4
  • Bulbs for S4 750/115 Ellipsoidals

    Anyone have a suggestion for what brand of bulb is the best for these lamps. A list of manufacturers would be appreciated. Thanks much
    Posted to Source Four and Revolution (Forum) by Bill Kersh on 01-16-2013
    Filed under: HPL lamps Source 4 par
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