Interested in price for MF04 NW
CW model is currently under promotion. Do take note that our group buy coupons will only work on non-promotional models.
Regarding MF04 questions from my fellow members, I will reply them once i finish clearing some of my personal works soon. Sorry for the late replies in advance. 
Alright… give or take… i measured my fenix tk15 1000 lumen light to make sure my tube is not reading high or low… first number is turn on and second one is 30 seconds…
Fenix tk15 cw… 1026/1000
Astrolux mf04 CW. 2000/1960. Sony vtc5a
Blf gt NW. 1708/1673. Lg mj1 8 cells used.
Astrolux mf04 cw
Blf GT NW
Thanks Newlumen, for your this great news with the readers. It is very difficult to get accurate readings for lumens with an oversized head like MF04.
Just went to order the Astrolux MF04 on the Banggood website,put in my coupon code clicked apply & it Won't accept my coupon code,it says: This coupon cannot be used on already discounted presale products.
Im trying to order the Cool White version wich it says is on sale with 23% off wich means banggood want me to pay $230.34 without shipping. Can someone please help me sort this out ?
thanks..
Yes of cause, for CW you have to wait, till the price goes up again. Without special presales price or Midyear-sale, you can use the code. Martin and Freeme described this on further Presales too.
Thanks for the test. Looks like some light is exiting due to the big head, so the real number is probably a bit higher. Can’t wait for the light, especially because I don’t have a GT and this is my first monster head light. 
Explained through PM.
NO PANIC!
Coupon deal will be unavailable for promotional items.
Ongoing promotions will have orange tags indicated on product and shopping cart page.
If you wish to enjoy the our group buy rate,
kindly wait till promotion is over, then revisit the product page through my supplied link and apply coupon during checkout.
Is there anything wich can be damaged around the Die, like bonding-wires or similar?
How do you got the silicone from the Die without damaging?
No bond wires, it’s a flip chip. I rubbed gently with a Q-Tip soaked in a strong alcohol called Dykem and I also used a strong thinner. The burnt particles did not damage the phosphor. Just be careful around the edge of the die, when removing the phosphorus with a razor blade. Now I just have to be vigilante about something falling on the die, both my BLf GT reflectors were dirty, even after being blown out several times, and I’m all out of LED seal.
What about the Candelas?
Have not the time to measure it….yet….looks impressive…lit up the house on the curve 2 city blocks away, the stop sign 4 blocks down…good enough for me…. 
That does seem like a low reading on the GT. Was that using the top of the ramp or a double click? 8 x MJ1 was surely keeping the GT in regulation for a full 2.5A.
I slipped a smaller reflector on my GT to measure it in my smaller TA Tube. I didn’t use a lens, which reduces the output a little more, but I got 2200 lumen. The GT is the only light I have that’s bigger than my lumen tube so I can’t measure it properly. We probably need a 6” tube to measure it properly.
Still, that 300 lumen difference looks legit. I don’t think it can be explained by the emitter bin since the GT is using the highest bin for an xhp35-HI which is D4. That means the MF04 can’t be using a higher bin.
A little of this increase might be explained by the 14% tolerance in Cree binning.
A little can also be explained by the higher amp draw of the MF04. 2.7A compared to 2.5A.
There’s also a small chance the TA Tube/HS1010A lux meter is a bit less sensitive to warmer colored lights. That seems really hard to test, though.
I’ll pass this along to TA to see what he thinks. Maybe he has an idea that I don’t.
Yea…, someone tested the mf04 and got 2300 lumen…
I am not worried about the lumen number…
Most of that reading difference would be due to the different tint if I had to guess. 4000k to ~6500k+ is a big leap and will have a noticeable effect on the readings.
The other factor is that the MF04 might of found some E2 bin emitters as those are not available in NW tints. That is about 7% more output there.
So the numbers make sense. Although in the real world a warmer tint will throw further.
Thats why NASA wanted a 3000k (well they wanted 2700k or warmer but 3000k was the best I could find with a reasonable bin) in their GT to improve real world throw.
Cool white does have a nice light saber effect though.
TA also said
I would really like to get my hands on a new mcpcb so I can try a CW emitter in the GT.
Or maybe someone with a TA Lumen Tube could measure a NW version of the MF04. That should because more direct comparison, NW to NW.
I’m not too worried about the differences as we know both model lights are good performers. My GT can already shine farther than I can see. Lol
I would guess CW have about 100 more lumen than NW.
Received all positive feedback for MF04 so far! 
Received.
Its so big …. oh man …. :smiling_imp:
