[Dominik]

What do you need ?

Princeton Tec Apex of course .


Cree XP-G emitter on small mcpcb – you can think of it as a emitter, You will use it the same way here.


It's not ideal, but it's good enough


Some thermal adhesive i.e. Arctic Alumina or other glue - I'm using 3M 467MP 0,05mm adhesive tape, some tin, soldering iron and screwdriver .

Remove the two bolts on the top and carefully remove plastic cover – do not try open the head, there is still one more screw.


Remove the last screw :


Now, you are in , open the head and remove the collimator lens.


Desolder the wires from the emitter :

Yes, I’ve already removed the thermal control diode between RT1 & RT2 pads – you don’t have to do it, but don’t cry if you break it .

Move the driver up, and remove old emitter, clean up the surface and glue there a new emitter in the center. You may use bigger mcpcb, but you will have to cut some plastic and will lost positioning pins for the collimator lens.


Put, the driver back and solder the wires, be careful to leave enough space for the collimator lens.

Screw everything together and her you have 250+ lumen Cree XP-G based Princeton Tec Apex .

Luxeon III - low / high



Cree XP-G R4 low/high 6200K




Outdoor :
Luxeon III - low / high



once dry, once wet :/

Cree XP-G R4 low/high 6200K