SKV89
April 28, 2020, 6:37pm
971
Acebeam scams the specs, as do many.
Yes - the only way to get 4500 lumens out of a SBT90.2 is very high amps, so yes - the driver is FET+5A regulated. Also if you compare to an Astrolux FT03S, keep in mind Astrolux scammed the throw specs as well - gotta check the FT03S thread and check the real #’s BLFers got. So the 420 kcd Hank is reporting looks pretty darn good. Still hoping the 420 kcd is conservative though.
The FT03S is definitely FET based, so if the K1 beats the FT03S, then yes - must be FET+5A.
Probably the K1 SBT90.2 will have stock high qual springs, so bypasses should still give you an amp bump. It gets insane trying to pull 20-30 amps from one cell, so that’s the biggest bottle neck. With triple XHP50.2 3V’s on one GOLISI cell, very hard to break 30 amps, then it drops like a rock anyway. Would be great with a 3P 21700 setup - that would be my ideal SBT90.2 thrower with 3 40T’s.
Acebeam lumens are usually over rated though their throw specs are usually under rated. The K75 output spec is the worst I’ve seen for Acebeam. I measured 4.3k lumens
I bought mine from Andrew & Amanda. Tested with Texas Ace Lumen Tube calibrated with Maukka lights and a Sekonic Spectromaster C-800-U. Lumen measurements taken at 2 seconds from turn-on.
Acebeam K75
Power Mode Turbo
4,310 lumens
6809K
-0.0047 DUV
69.9 CRI
-9.9 R9
44.4 R12
63 Rf
97 Rg
Acebeam K75
Power M4
1,538 lumens
5755K
0.0034 DUV
66.9 CRI
Acebeam K75
Power M3
778 lumens
5480K
0.0074 DUV
66.7 CRI
Acebeam K75
Power M2
247 lumens
5098K
0.0131 DUV
66.1 CRI
…
