the wattage on A type drivers can go higher, the wattage on B type drivers will not. B drivers require a separate potentiometer.
i don’t see any point in underdriving LEDs because with the pace of technology i highly doubt i’ll be using this lamp in 2 years let alone 5 years, and the difference in efficiency isn’t that big of a deal to me. i know its not a cob, but 4x qb304 and 2x HLG-320-1400 for ~640W
Diy led tape style 
lol
LOL These things are hot… I’d be afraid that the foil will sputter.
In greenhouse at fall its ok, i was also afraid of course
I took an anjiit “1200” off amazon and pulled it apart. I kept the 40vlt 1200mah drivers and all the internals except the Chinese cobs, and replaced them with gen 7 Vero 18s in 3000k.
has anyone experimented with driverless COBs? i think they work by lighting up half at a time and alternating so fast you don’t notice a blinking or something similar, not too sure. but cirrus just released a true 1000w LED utilizing driverless COBs for $999, so less than $1 per watt. i’ve seen some driverless COB builds on other forums but they look janky and idk
https://www.ledgrowlightsdepot.com/collections/cirrus-led-systems/products/cirrus-1k-led-grow-light
Yo gotta know what you’re doing bro! I know nothing of electronics…
The hard part is solder, but if you watch growmau5 on YouTube he’s a great teacher of all things cob. 
Its nice not having people troll the crap outta you for not using Vero 29 s or citi’s! Real positive vibe here, I’m loving it.
@Morgwar your build is super impressive (and economical!) i couldn’t think of one negative thing to say ! can’t wait to see your ladies under it!
I use those two… HAHAHAHAHA
Got my Citizen CLU048 200W and the Vero29v7 600W… LOLOLOLOLOLOL
You can see my girls here.
Thanks man ill try to get a journal going. Still getting the hang of this forum. The light you posted looks great for a 4x4 but I think you could get better coverage for less cash if you shop around.
If i have to look for one more lamp on the web i will go crazy!
First started to bother all these guys asking what they would use and all, then a good friend in the forum pointed me in the direction of COBs. I started to watch GrowMau5, and enrolled in a electronics class online to learn how to do everything the same. That was when i realized i wanna grow weed not build lamps… LOL
I bought them ready made from Timber Grow Lights.
Nice, I was going to do the same thing to a pair of Blackstar Chrome lights I have in storage. Looks like they worked out great.
Might have to dust them off and give it a go. 
yes i would never purchase a prebuilt light i was just using that as an example to show driverless COBs are starting to show up in the mass market… i’m working on designing my own PCBs
Well don’t poke to much fun but this is my PlatinumLED P300 conversion. Cost me approximately $80us to get rid of the blurples and replace them with 4 Citizen Clu-048-1812 90cri. The rig used to run at 185watts at the wall and now runs at 144w and I do believe this is a much more efficient light.
The COBs are being driven at about 33 watts each.
This is what they look like in the tent.
Looks like a decent upgrade. 
Cob rig currently running at 200w in the missis auto tent.
Cobs and Solstrips running at around 400w total just now.
Glad you like it bro and i’m happy to support your enterprise so yeh no prob.
