Astrolux S42 vs Emisar D4 beam profile

Let’s say I swap the LEDs on the Astrolux S42 with XP-L His, will it have a more throwy beam than a D4 with XP-L His?
I am wondering this because the S42 have bigger diameter TIR optic than the D4 based on pictures. The S42 head is pretty much filled with TIR optics, while the D4 has lots of empty spaces.
Based on review measurement, it seems the S42 also have higher kcd than the D4 despite having less total output.

Anyone know the model of TIR optics used in the S42? Will a S42 with Xp-L His have a more conventional beam profile of hotspot+spill?

Edit:
I am thinking to see if I can put the optics on the S42 to the D4

S42 (pic from Lexel’s review)

D4( pic from TK’s review)

I think you are right that the s42 is throwier. Manker/astrolux has his own optics, so there is no carclo or other brand replacement. That said, the manker optics are really nice in my opinion.

In my S41 I sliced the domes of my nichias and this did improve the throw and the light is much throwier than my D4 xpg2.

If you want more throw you can also try a different optic in the D4, there are several easy to replace carclo optics.

I have no experience with xpl Hi’s in both lights btw, but I see no reason why it would not work.

The optic in the Astrolux quads is pretty nice and throwier than the Carclo quad in the D4, but are not always mounted at the correct distance from the leds. In my S42 I considerably improved the focus (and throw) by filing the inside edges where it rests on the head by 0.8mm, letting the optic sit deeper over the leds.
I’m not sure if Astrolux has repaired this design fault in later runs of the S42.

I am thinking if putting the optics on the S42 onto the D4, does anyone here know the dimension end LED spacing of both optics?

LED spacing is not the same from the carclo to Manker. Boards are different in spacing to fit the corresponding optic.
Manker optic is 22mm OD and the Carclo is 24mm OD.

Using the Manker optic and MCPCB in the D4 may be possible but you will only have support on 2 legs of the optic. This is the failure point in early S41 models as the optic legs compressed and emitter failure resulted. Later S41 and S42 models had revised heads that supported the optic in the head, not directly on the legs.

Ahhh Thanks djozz, the S42 optic is much bigger indeed! So I guess they would never fit =(.

Astrolux S42 is better in my opinion. I sell them on Amazon so I know which one is better. lol

yea sure, whatever you say buddy…

:smiley: haha!