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When doing a DIY project, you need to gather information first, about the components you want to use. If you had actually read the specs of the QB96, you would have known that the driver you posted cannot be used. Unless you want to burn your house down..... don't be messing with electronics if...

Yep, the Vf on mine was hand wrtten also. Love my 304s! Sad that discontinued them.

I've been running QB's since they were released and I replaced all my former lighting with them except for one COB light. I've been so pleased with them and with HLG's customer service, you couldn't give me another light!

Yes that's right, about a 5% difference between the 561C and the 301b, yet still about 7% more efficient than most COB.

I still have and use 4 QB 288 that use the 561c chips. Still work like new!

If you'd actually red the thread, you'd have seen that HLG has their own manufacturing facility. They started out with boards THEY designed and test, then had built in China to their specs. They didn't just slap some chips on a board, they spent hundreds of hours and thousands of dollars on this...

Sound more like you didn't want to hear you made a mistake.... there was nothing wrong with his response. And people shouldn't be anything less than blunt when trying to help someone prevent a potentially dangerous situation. But hey, it's your home and family at risk so have it your way!

Don't think he was being a jerk, he is trying to save you from shorting out your light and maybe burning your home down! SAFETY should always be your number one concern when doing DIY!

I heard his mother cut the power to the basement........

Apparently your NOT smoking enough of your own bud...lol! Missing him is like missing stomach flu.......

Very nice bud!

One 320H-C2800b Yes its dimmable. I'll soon be adding 2 more boards on a 240H-C1050b

Youall need a laugh......

CBD Kush under 4 QB 304 @ 80 watts per board

Run more QBs at lower power! Below 70 watts, you don't even need heatsinks! I'm eventually building a 9 board light for SCROG run at 50 watts per board.

Cobs work well, QBs however, are more efficient and they weight much less even with a heatsink. Add to that, they save 4 inches of headroom in a tent, and that can matter depending whit you grow. That said, my COB light has given me excellent results. Going to give the COB light to a friend...

I've replaced most of my lights with Quantum Boards from HLG. I cut my power consumption in 1/2 and increased my harvest. I still have one COB light but I'll be replacing that soon also. QBs give me more headroom over cobs.

What a beauty!

Awesome!

I believe one is 3000k and one is 4000k