Question about balast and cdm/hqi

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hi
i'm michael from poland, i have some question about metehalogen lamps, i want to use in my projector Philips CDM-TD 150W/942 RX7s, can i use for this lamp sodium balast 150w??? what type of ballast you had used in your projector??
the second option is Philips MHN-TD pro 150w/842 RX7s, can i use for this lamp sodium balast 150w??
What if the difference beetwen this two types of lamps?? is it big or small??
what you think, 150w will be enought to use with ohp and lcd panel spectra view c (9 inch)??
thx for answer!
 
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