How do constant current drivers work?
Do they compensate for varying Vf's of different emitters or are they designed for one specific emitter?
In the case of the W200 many seem not to have drivers but I think some do...Packhorse found one I believe.
If a W200 does have a driver would this compensate for the low vf of a XPG?
Of course this question is only if there is a driver and if it is a constant current driver.