... This may be the only time I have ever said this, but make sure the
unit has an FEL 1,000w lamp in it. ...
Two other things that may help you limp along:
1. Ushio makes a 1200W "FEL", the
JCV12 1200W 120V. Any Ushio lamp dealer should be able to source it for you. It'll cost about twice as much as a regular FEL. 33,000 lumens instead of 27,500.
2. Put an over-ranging
Variac inline, to run the
fixture (lamp and fans) at 130V instead of 120V (or whatever your
line voltage happens to be). Cost about
$175. Lamp life will obviously suffer. 71 hours instead of 300.
Applying the above two mods will yield (at least on paper) 43,300 initial lumens, a total increase of 57% over a standard FEL, at a not-insignificant cost.
The above is nothing new or original. A little show @
STEVETERRY worked in 1975 did it. Whether or not the approach is appropriate for a high school is left to the reader. Obey all laws, use applicable
PPE, stay in school, don't do drugs.