P.S.: emitter Vf plays a key role in a direct drive build with regards to current draw. And yes, the emitter is more daylight white, a bit warmer than 6500K.
Barkuti, why does the C8A pull 5.6 amps max and the C8t only pull 4.5 max , is it only the Leds that draw differantly ?im assuming they hav exactly the same MCPCB`s
sorry i just re read your post re the emmitters
So if you were to de dome the XP-L2 in the C8A it probly would out perform the C8T for distance then ??
The official current draw figures probably are some sort of average taken out of a set of measurements with certain cell(s) at some voltage range. The figure is higher for the XP-L2 emitter due to slightly lower Vf versus the XP-L HI.
Now with regards to de-doming go ahead if you will, though you may want to ask more knowledgeable fellows in this matter. People is having trouble dedoming the latest generation Cree leds them as far as I know.
Nice review Barkuti! Excellent work with the pics showing the product. You obviously took some time doing this.
Makes me want to send my C8F back to them and quit.
Well, itās no longer stock, I usually canāt help myself when inside a light taking breakdown pictures, get lost in the modding and forget to do the review.
Oh yeah, the XP-L2 is a flip chip style emitter, no bond wires on top. De-doming usually results in blue light escaping from too much phosphor pulled off the slick die surface when the dome separates. There are ways, but it isnāt straightforward nor is it especially easy.
Gosh! Just awoke from an hypoglycemia, guess it :facepalm: was time (@#$%!). It's one of those undesirable mind programs under my self-steem issues, claiming to get resolved; and I mean to heal my type I diabetes. Just a matter of a little money, really.
Left an unfinished custom e-switch cardboard over the table, glad it's still there; only two resistors left. :-)
ĀÆ\_(ć)_/ĀÆ
What if we were to dedome these newer emitters via high speed machine sanding? With a Dremel type tool plus some sort of sanding bit and a reliable way to slide the emitter at the right height under the bit sidewaysā¦
By the way, did this thread got bumped because of my little update?
Thinking of those doodads that cut thin slices for microscope slides. Something like a collar to act as a guide, and a razor that just skims across that to take off everything up to that collar, and nothing more.
A single clean cut would likely be cleaner than a rough cut and sanding it down.
Does the Sofirn C8T really come with AR-coated glass lens?
I ordered both the Sofirn C8T and C8A to check them out.
I notice that the glass lens of my C8T does not appear to be AR-coated (when viewing the glass lens at an angle, it does NOT have any hint of purple/blue like in AR-coated glass lens).
The glass lens of my C8A shows a very slight hint of purple/blue though, so I suppose it is really AR-coated. Also, the glass lens on my C8A seems āclearerā to me than the one on the C8Tā¦
(unless there are AR-coated glass lens that do not show any purple/blue when viewed at an angleā¦)
Ok, I sent a message inquiring about the non-inclusion of AR-coated glass lens for my just-receive Sofirn C8T.
Sharing the response I got from Sofirn:
āAbout the AR coated, the production before 1st, Feburary, all the C8 series not use the AR- coated glasses, and after that time, all C8 series will use the AR- coated glasses.ā
Just my guess: possibly some batches had AR-coated lens, then when they run out of stock of AR-coated glass lens, the others batches used regular glass lens, and they continued selling the non-AR-coated C8T anyway. Unless this characteristc was questioned, Sofirn would probably pass it as āAR-coatedā C8Tā¦ Up to the customer to verify the claim (flashaholics will likely notice immediately, but muggles may not.)
