This is a 2k fresnel, which is way more light than I usually need. Is there any reason I couldn't use a 750 or 1k lamp? There's a label on the back that gives the part numbers for both, along with the color temp (3.2k) so I'm inclined to believe so...thought I'd make sure first though. Thoughts?
BTW, I have every intention of keeping the old bulbs around just in case. I do mostly corporate stuff and a 2k is way more light than I usually need since the lights are usually only about 15-20ft from the subject.
There is no reason you could not lamp this unit with a bulb with less wattage so long as it is the right shape and size -- and since the part numbers are listed on the back those are clearly the bulbs to buy.
Yes, hang onto that 2K bulb. You never know when you'll need it.
When changing bulbs, be sure to NEVER touch any with your bare hands -- your fingers will leave miniscule oil traces on the bulb which will shorten the life of the bulb substantially. Always use a clean cloth or clean gloves or a piece of kleenex. (And let the bulb cool down before touching....)
If you are unclear about color temp, learn about that by searching this site and also Google. Kelvin color temperature refers to one of two color axes you need to pay attention to, the red-blue axis. The other is the magenta-green. The significance of these and how to correct has been explained several times on this forum.