So I'm going through my lamp inventory and I came across two lamps that predate my working at this facility. I have 2 HSD 250W/80 lamps, but no fixtures that specify this lamp. We have never owned any fixtures that specify this lamp. Yet I have 2 of them, one of which looks like it has been used before. I do have quite a few fixtures that take the MSD 250 lamp, which has the same
base.
So...my question is, can this lamp be used interchangably? They are the same
base, color temps are different and the
voltage is different, but would this be a suitable replacement lamp? I would never want to use two different color temp lamps like that but in a pinch if I was out of lamps and lost one...could this work without damaging the
fixture? I've never used a lamp other than what is specifically stated by the manufacturer for an
instrument, but they do have the same
base, so I know it would at least fit.
Just curious. Thougths?
Do you have a MSD 250 or
MSD 250/2 in
stock? Big difference in
color temperature and
CRI for starters.
I have one of them and the 7,2K version also in
stock which I
play tested for use but more especially since I was already running the
MSD 250/2 on fixtures - for playing nice for them given the Philip price - the
switch over to another brand. Finally chose the GE brand of CSD 250/2 SE amongst the Osram, Ushio and Amglo versions tested.
Both as with HSD 250/2 and I think even a HSD 250 lamp been also on the shelf for years now - the HSD 250/2 been on the shelf since before I started work - over eleven years now. I think as with me in
play testing for price and playing nice with the other
fixture lamps, they were more experiment. Some times you win, other times you don't but often worth the price if not free in
play testing. Also have a 250w Ushio HSD lamp on the shelf. The USD seriese Ushio made, the USR seriese from Ushio - they were buying from Phillips and reselling them under their brand.
A few companies such as "Don's Bulbs" will buy up obsolete if even used lamps. Many used
stage lighting sources including E-Bay otherwise to sell them off as a package. Have offeres also from my normal distributers to buy up my dead
stock - just gotta get time to do so. In the mean time, old arc lamps unlike
filament lamps won't have as much of a problem with age due to
filament sag. No rush at least for me to get rid of them right away as long as I can sell them back at only a slight loss. MSI 1800w lamps, was for a while like buying six per week, now I'm stuck with nine of them I have no use for at well over $600.00 each.
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On the other
hand, as above it is totally correct that these lamps will work perfectly fine in your fixtures as emergency spares. Big difference between the MSD 250 and
MSD 250/2 in
color temperature and the Osram attempt to mach Philips didn't match either in end result. Have also in
stock an early example of a Osram version of a 71-2529 lamp from them sent to me. Didn't
play nice with the other lamps sufficiently but only a few weeks ago when out of other spare lamps, I did
send it out as per spares for a show while other lamps were being
drop shipped and hopefully on the way in time. Osram version would work and one would have to do a
bit of adjustment but it would function.
R&D is part of saving money in the long run - cost of doing business if you want to save money. The HTI 1500w/60/P50 has been
play tested to work just fine on 1.2Kw fixtures in playing nice with them in color balance with lower wattage MSR 1200w Fast Fit lamps. Could be cheaper an more dependable - though the fast fit lamp has improved some in quality. This in me considering the
switch of brands especially out of expense.
Depedant upon the use, I would certainly use such lamps you found given spare or for a differently tasked
fixture that don't need to be similar. Use the lamps up a not worth as much in resale.