TASTY Led lights and bud boss

@Rahz I am wondering and been thinking about this ? and haven't figured it out yet
if you run a hlg 240-2100 with 3 cob's you are maxing Fv and getting about 250Watts....but if you only run 2 cob's why aren't they running at a higher watt as the watts would be distributed to 2 instead of 3....does it have somethings do with the maximization of the Fv...I am just not getting it...as I see on you sight that a 3 cob 2100 is about 250 watts but a 2 cob 2100 is like 160....

The HLG-240H-C2100 provides 2.1 amps. In a series circuit each cob is getting 2.1 amps whether you are using 2 or 3. At 2.1 amps a 3590 will use about 75 watts, so 2 output 150 watts and 3 output 225 watts.

ah ok I understand.....thanks.....I didn't think of the amps......so what is the max wattage of a 3590....do you need 2.4 amps to maximize wattage....I understand that isn't efficient...just wondering

Rahz,
I'm running 2 Mars 300w (60x5) in a 2x2 tent. What light would you recommend of yours to replace both lights and get better results?

Wisher2 said:

ah ok I understand.....thanks.....I didn't think of the amps......so what is the max wattage of a 3590....do you need 2.4 amps to maximize wattage....I understand that isn't efficient...just wondering

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The max wattage according to Cree is 3.6 amps (suggested is 2.4) and you're correct, efficiency goes down as wattage goes up.

Lycan77 said:

Rahz,
I'm running 2 Mars 300w (60x5) in a 2x2 tent. What light would you recommend of yours to replace both lights and get better results?

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I haven't used that lamp and don't know what type of yield it will provide. Electrical efficiency is unknown so it's not possible to make a direct comparison. However a T2-2100 will provide about 950 PPFD (75 par watts) in a 2x2 tent which would be a pretty strong lamp for the space.

Rahz said:

I haven't used that lamp and don't know what type of yield it will provide. Electrical efficiency is unknown so it's not possible to make a direct comparison. However a T2-2100 will provide about 950 PPFD (75 par watts) in a 2x2 tent which would be a pretty strong lamp for the space.

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Thanks, I'll look into it.

Which HLG driver is used in the T4-1750? Is it dimmable?

the bud boss, is still using the red/blue solution. which looked better on paper. after a few years of growers using them. I used mars, and kind. and now I can say I am smarter then NASA since their VEG-1 currently in orbit is using this red/blue spectrum.

just kidding they, did cover this in some data in the logs, saying they know that a fuller white like spectrum works better, but they are interested in low wattage and the production of nutrients and antioxidants in vegetables. and they could get more calories from lower wattage in these colors. which is counted watt for watt on the space station.

so...im not really smarter then NASA. I just have more power are my disposal.

Tony Gunk said:

Which HLG driver is used in the T4-1750? Is it dimmable?

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The 240H-C1750B so yes dimmable. It comes with a dim switch, off placing the dim wires open for full power and on for 60% power.

Rahz said:

The 240H-C1750B so yes dimmable. It comes with a dim switch, off placing the dim wires open for full power and on for 60% power.

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Looks like a winner for a 2x4 tent. Appears to have 2 fans. I've read in another thread that the fans are loud. Do you solder the fan connections or are they some other type of connection. In case I ever wanted to replace them, I want to know how easy it may be. For now, I would be using in the garage so no noise concerns, but may move inside the house later when it gets too cold. I've priced out DIY and it would not be much cheaper than what you're asking.

The fans I use are:

Air Flow 82.7 CFM (2.34m³/min)
Static Pressure 0.246 in H2O (61.3 Pa)
Noise 38.5 dB(A)
Power (Watts) 2.76W
RPM 2500 RPM

They aren't that loud, but not stealth fans either. They are connected using wago222 nuts, so no soldering required to switch fans if that's what you wanted to do. You would need a 5/64 and 3/32 hex wrench.

I believe that is a pretty quiet fan for the cfm's....most fans at lower dB usually run about half the cfm's
higher cfm=higher heat dissapation
probably sounds like a high powered desktop
I will see in a few days

Fans don't bother me at all and it's a lot quieter than the Progro 260 LED it replaced.