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<blockquote data-quote="Rob Timmerman" data-source="post: 40784" data-attributes="member: 172">Re: Something for the squintsI&#039;m not saying we haven&#039;t made advances in the 40 years since those lights were introduced, but it&#039;s not that bad.&nbsp; The older units don&#039;t get significantly hotter than modern units of the same wattage.&nbsp; Ever grab the back of a source four that has been on for some time?&nbsp; Source fours simply take longer to heat up and cool down.&nbsp; The older units do go through gel and gobos more quickly than newer designs that use dichroic reflectors.While asbestos was certainly used for insulation (until it was replaced with PTFE and glass fiber), I don&#039;t believe lead was ever used in those units.&nbsp; Performance is dictated as much by the lamp in use as by the fixture.&nbsp; If the color temperature of the older units is significantly warmer than newer units, you probably have a longlife lamp or a higher voltage lamp that does not put out as much light.&nbsp; Or you are using an incandescent lamp when more modern halogen lamps are available as a retrofit.</blockquote>

[QUOTE="Rob Timmerman, post: 40784, member: 172"] Re: Something for the squints I'm not saying we haven't made advances in the 40 years since those lights were introduced, but it's not that bad. The older units don't get significantly hotter than modern units of the same wattage. Ever grab the back of a source four that has been on for some time? Source fours simply take longer to heat up and cool down. The older units do go through gel and gobos more quickly than newer designs that use dichroic reflectors. While asbestos was certainly used for insulation (until it was replaced with PTFE and glass fiber), I don't believe lead was ever used in those units. Performance is dictated as much by the lamp in use as by the fixture. If the color temperature of the older units is significantly warmer than newer units, you probably have a longlife lamp or a higher voltage lamp that does not put out as much light. Or you are using an incandescent lamp when more modern halogen lamps are available as a retrofit. [/QUOTE]

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