The topic has been discussed before, but I'm looking for a conclusion to what has been a large science to many of you. It was concluded that preheating = bad, primarily because it wastes electricity, and does not extend lamp life because the tungsten halogen cycle either isn't activated at such low intensities, or it is but the lamp cools back down before a show or rehearsal starts anyways. BUT, it's known that running a lamp under the recommended voltage can extend lamp life exponentially. With that known, what can be done to extend lamp life? I believe the obvious answers, if feasible for a specific application, are to program dimmers to that the 100% on the console, is actually a lower load percentage on the dimmers. Another possibility is to create longer default rise-times. So in addition to that question, what is the most practical, yet functional means of extending lamp life. I know people will come up with different possibilities, but one of the questions I'd like to be delved into further is which dimmer load is the best as the max, and for which lamps? For starters, I'd like this to be based around HPL575X and HPL750X lamps, with potentional to be extended to other lamp types.