As usual my mind is thinking ahead before I've even finished my current project.
Right now I'm thinking of getting a Coroui (or however it is spelt), removing the stock emitter and MCPCB, grinding out the flat shelf in the base of the emitter that surrounds the XML, and making a custom emitter PCB with 9 dedomed XPE2 emitters. They should fit. Drive the crap out of it (custom driver) and see what happens.
Worth a try? Each individual emitter has more throw in it than an XML. 9 of them in a reasonably deep emitter could provide a LOT of usable throw, although it could produce a bit of a messy beam.
Possibly but the mt-g2 has a kind of mesh shaped emitting area. This on the other hand will have rather defined points of light. I imagine it would be like the noughts and crosses template, only with really thick lines.
Or perhaps like the principle behind the Plight SR96 lots of tight individual reflectors would work better? Then again that particular light uses MKR LEDs which are effectively 4 XPG2 emitters...
Could end up with a pretty ugly beam pattern that way. Each beam would have to be focused and that would result in a horrible pattern at shorter or longer distances - only the one focused distance would look any good.
From the XP-E2 datasheet, 9 x XP-E2 would be 10.35mm x 10.35mm, even if you packed the emitters side-by-side and without any space.
A single MT-G2 emitter is 8.9mm x 8.9mm.
In other words, 9 x XP-E2 emitters would be larger than 1 x MT-G2, so the emitter hole in whatever reflector you use would need to be larger than one for an MT-G2.
I don’t know how focused the XP-E2s are, but I wonder what the composite beam would look like without any reflector (e.g., a mule) as you suggested?
I imagine it'd just be all flood. Any emitter , no matter how small, is all flood without an emitter.
My theory - however loose - is that 9 XPE2s in a single reflector would throw much better than a single MTG2. Zero maths or even any doodles to back that up with of course.
We won’t know until you try :)!! Maybe someone here could machine a reflector with an emitter hole and flat area around the emitter “array” that you’re proposing? I think I’ve seen threads where people have machined their own reflectors.
I would assume they lose the benefit of small surface area, made worse by the fact there is wasted space between each emitter. Effectively it would be worse than an MT-G2 if the theory is correct regarding emitter surface area and throw, if they wre arrayed like a single emitter.
9 in a multi reflectored light would yield more light (more emitters) but less throw (smaller reflector area per emitter) anyway. Would be easier to use less XM-Ls for same effect I would think.