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I was working with vicky at Kingbright and I couldn't get her to budge below 24.50...Digikey has em cheaper....same thing on the power supplies she wanted 3 buck more and i still had to pay freight I was trying to work with you, but you seemed to be quite busy the last few days and confused...

@qballizhere Ok so next question..Who's got the best deals on citizen chips?

What color and cri are you running on those 1818's? Any opinions or comparisons on those versus hps or other cobs?

Ok so next question..Who's got the best deals on citizen chips?

: )

Ok TTys, you ready to see version 2? You and Qball seem to be my captive audience... Its showtime.

Thanks SS

1818 3000K80Min 108 COBS @1100 mA ON 1.813 PROFILE HEATSINK 192 SQ.FT. CANOPY 94% EFFICIENT DRIVER @8.5 CENTS PER KWH Total power watts at the wall: 6566.84 Cobs power watts: 6172.83 Total voltage forward: 5611.66 Total lumens: 980036.89 Total PAR watts assuming 10% loss...

Now on to color and cri....

As for dimming, definitely be running type b's. Just finished up our custom pcb that will control 4 channels of drivers and 2 fans.

So I guess I'm kinda going at this backwards then. I started with what layout I want 3x3 cob. Then I broke down the power from the wall I wanted use. Max 650w. Then i tried to make it as efficient and moderately priced from the calculators. When you say that you would need 71 of the 1212 vs...

Nice use of space on that driver.

or maybe the cxb's....... and then there are the cheap 1212's what will i ever do.

trying to replace 16 600 hps. you can check my build to see whats up if I happen to fall asleep here. Water cooled cobs/ picture heavy

Hey Mark looking to put together a fairly large order for myself 108 cobs. got a couple questions before i pull the trigger. I was working with cobkits but he seems to be too busy.....

Thanks for that

It's looking like 1818 are the bang for the buck, Any naysayers?

So what cobs you running? If i remember correctly it was 3590's ?