The only thing would be that the J4 flux bin is more prone to getting an above BBL line tint bin, being GA3,GB4,GC1,GD2, having a 50% chance of getting one above the BBL.
The J3 flux bin has been confirmed by the rep last time to be GA3/GA4 depending on the quantity ordered.
Same thing for the J2 flux bin of the 3000k version, being confirmed HD2/HA4 depending on the quantity ordered.
Well, they probably have a special relation with their supplier since they can easily buy 10000s of LEDs at a time, so they can get more choice in term of chromacity bin order code.
I’m not willing to take the risk of a J4402 chromacity bin getting an above tint bin, even with a higher flux bin.
The only way I would be willing to take a risk would be that some people here pay for the order, and then I order it myself to see what happens.
Don’t forget - if you do CCT mixing, you get a lower tint. So, even two emitters with a “green” tint (above BBL), if they are far enough away from each other in CCT, can make a “mixed” CCT that has a “rosy” tint (below BBL).
I know this doesn’t help in single emitter or otherwise single CCT builds, but it’s a thought.
Yes of course. The only tint available for the LH351Ds are T6 bins, so about as good as the AEDe groupbuy LEDs. I’m still currently searching for a source.
I’ve currently found a contact at Future Electronics which may be able to pick up some good tinted LH351Ds.
HOWEVER, I can easily buy the springs, and ship them quickly, compared to the lead time of the LEDs.
Too far away CCT mixes can and usually will screw up the CRI, although it may not matter much (if at all) depending on user preferences. To avoid too much CRI loss I get along with a maximum of 1 to 1.5K CCT distance when mixing high CRI emitter dyads. Some testing in this regard would be nice to see (CCT emitter delta vs CRI loss), but we need to convince some tester about this. maukka has a nice deal of high CRI emitters… O:)
It’s probably normal but as I am now working with the springs, I noticed that the small spring (from the previous gb of course) remains shorter when compressed the first time?
Yes, with these springs, both small and large, it is normal for it to stay somewhat compressed permanently from the first use. The new ones will be the same too. It shouldn’t get any worse though. Once that little bit of length is lost the first time, that should be all.