I’d like a floodier version with XPL; the Nichia doesn’t have enough output and efficiency. Considering the result with the XPL-HD in the D4S, I’d like it in the D4 as well. Should maintain the lumens and drastically spread the beam.
I ordered mine with frosted optics,then got the narrow to swap. I noticed big difference. Almost like 2 different lights. They are both bright, lemons very close.
As others have suggested before, It would be so nice if Hank invested in developing a current regulated driver with the D4 user interface. Instead of making these 219C and SST-20 D4’s just hot and inefficient, they could be run in a much more efficient regime, with not that much lower output.
With more and more emitters with extreme low voltages, such regulated driver (perhaps even buck- ) would be an asset for the Emisar brand flashlights.
I wonder if it was feasable to order the D4 or D4S with a 2x2 array of SST20 5.000K with 6500K or 3000K with 4000K. I wouldn't want to mix 65CRI and 95CRI, though.
All builders could heed the voice of reason and sanity in this ‘sizzle sells’ market.
It is precisely why I use a MecArmy PT16/18 instead of my D4 lights.
This 2200mA buck driver (just new from KD, I bought 2 of these) claims a total height of 8mm. For a D4 type of light you want at least 6A to drive 4 SST-20 leds to a decent output, so a bigger coil is probably needed, adding thickness.
That's great news! Thank you Jay! Does he also offer different optics installed upon request? I only know about the 10622 as the standard optic for the D4.