Hi guys I'm looking into buying QB boards and I have 2 configurations I wanted to check with you all. I will buy 2 heat sinks, depending on conf they will be either 940mm or 900mm in length. Each heat sink will have 3 qb boards on them, the difference will be number of white Samsung lm301b and Cree 660nm leds. The boards are 3500k so little more blue spectrum then 3000k and using extra the Cree 660nm will give more red spectrum for better bloom. Conf1 2 heat sinks with 3 boards on each with 1512 lm301b leds AND 216 cree 660nm leds, total 1728 leds. Each heat sink with 3 boards will have one HLG-320H-48B driver. Conf2 2 heat sinks with 3 boards on each with 1728 lm301b leds AND 48 cree 660nm leds, total 1776 leds. Each heat sink with 3 boards will have one HLG-320H-54B driver. So as you can see Conf1 has 216 less lm301b leds BUT 168 more Cree 660nm leds AND total 48 leds more. So my question is which one would you guys prefer and why? Would you guys go for more (+216) lm301b leds and only having 48 Cree 660nm but also 48 more leds in total? OR Would you prefer having less (-216) lm301b leds but much more (+168) Cree 660nm leds and also 48 less leds in total? Those of you that are familiar with HLG QB v2 boards, imagine those boards and the layout they have. Conf1 has 2 leds rows taken out and instead have Cree 660nm in those places (picture 1). Conf2 has the exact same layout as HLG QB boards but also added 8 Cree 660nm leds in between rows (picture 2).
I’m running 3000k boards, with on-board epistar 660nm. The CREES should be better quality, with less chance of burning out. If it would’ve been available at the time, I would have purchased 3500k boards with the 660nm chips. My two cents for what it’s worth.
Oh great! My I ask were you bought it and if it looks like pic1 or pic2? And of course, are you happy with the quality and outcome?
I’m trying parts from Bava. Their chip layout is setup different than either one of those. If you’re lighting up a small space, I’m sure the difference is negligible, but I still like Bavas layout the best. It seems the most evenly distributed, at least to me. And to answer your second question, yes, I am very happy so far. After this harvest I should be able to give you a better opinion.
They look really nice, I think I like that layout more, as you say it's more evenly spread, I will check them out! Thx mate!