Noob COB dimming question

I'm planning on building a 9 cob display using citizens clu048 and 3 HLG-185H-C1050b drivers. I've got some dimming questions for you LED fanatics.

1) Will these drivers make any kind of electronic noises?

2) Will dimming these drivers make my drivers make some kind of noise?

^I'll be sleeping 5 feet away from these and they will be placed outside of the tent so that's the reason for my concern

3) I'll be connecting the drivers using wago connectors. If I connect all the dimming leads (blue) to one wago and all the dimming grounds (white) to another wago and connect those two wagos to a single dimming lead, can I dim the whole display at once?

4) I want to have dimming control over whole display between 50% and 100% brightness. I'll probably be running the COBs between 80-90% brightness the entire grow (flower). What kind of dimming lead do I need for this? Spoon feed me please

5) Am I missing anything?

I've got 3 BOG sour bubble and 2 sour grape plants in veg that are going under this light. I'll post pics of the build and the grow if the light comes through.

Thanks everyone!

mrbubble said:

I'm planning on building a 9 cob display using citizens clu048 and 3 HLG-185H-C1050b drivers. I've got some dimming questions for you LED fanatics.

1) Will these drivers make any kind of electronic noises?

2) Will dimming these drivers make my drivers make some kind of noise?

^I'll be sleeping 5 feet away from these and they will be placed outside of the tent so that's the reason for my concern

3) I'll be connecting the drivers using wago connectors. If I connect all the dimming leads (blue) to one wago and all the dimming grounds (white) to another wago and connect those two wagos to a single dimming lead, can I dim the whole display at once?

4) I want to have dimming control over whole display between 50% and 100% brightness. I'll probably be running the COBs between 80-90% brightness the entire grow (flower). What kind of dimming lead do I need for this? Spoon feed me please

5) Am I missing anything?

I've got 3 BOG sour bubble and 2 sour grape plants in veg that are going under this light. I'll post pics of the build and the grow if the light comes through.

Thanks everyone!

Click to expand...

There is no noise from the drivers,,at least none of mine make a sound..The dimming I am sure can be done like that..Make sure u r using a 100k Potentiometer but ,it should work well like that...but i would recommend you putting a dimmer/potentiometer on each driver due to just more control of your setup...its good to know if u have a pheno different then one next it ,that u can adjust the spectrum accordingly..
as far as the dimming on one dimmer..That may be something to make sure before trying ,being I am not a to educated in tht specific dept.
But again,I would put dimmer on each driver just for more user control...Hope tht helps ur mind a lil lol..u will get more replies I am sure lol
much peace an love and hope ur build goes as planned..post some pics of it when u finish ...would love to check it out

1,2 - they have measures to limit interference, so they shouldn't make any noise.

3- Yes, refer to the datasheet for resistance values. Basically 100K ohm for a single, 50K ohm for two, 33-35K ohm for three, etc (100K ohm / #of drivers)

4- Most people use a potentiometer,

dro-man80 said:

There is no noise from the drivers,,at least none of mine make a sound..The dimming I am sure can be done like that..Make sure u r using a 100k Potentiometer but ,it should work well like that...but i would recommend you putting a dimmer/potentiometer on each driver due to just more control of your setup...its good to know if u have a pheno different then one next it ,that u can adjust the spectrum accordingly..
as far as the dimming on one dimmer..That may be something to make sure before trying ,being I am not a to educated in tht specific dept.
But again,I would put dimmer on each driver just for more user control...Hope tht helps ur mind a lil lol..u will get more replies I am sure lol
much peace an love and hope ur build goes as planned..post some pics of it when u finish ...would love to check it out

Click to expand...

Do NOT use a 100k ohm pot for 3 drivers. Like Rahz said, 100k/ number of drivers. 33k is hsrd to find so I'd go with 35k if you can't find it

Haha that was fast. Thanks guys, I think I got all the knowledge I need for now. Ordering the whole shebang tomorrow

dro-man80 said:

There is no noise from the drivers,,at least none of mine make a sound..The dimming I am sure can be done like that..Make sure u r using a 100k Potentiometer but ,it should work well like that...but i would recommend you putting a dimmer/potentiometer on each driver due to just more control of your setup...its good to know if u have a pheno different then one next it ,that u can adjust the spectrum accordingly..
as far as the dimming on one dimmer..That may be something to make sure before trying ,being I am not a to educated in tht specific dept.
But again,I would put dimmer on each driver just for more user control...Hope tht helps ur mind a lil lol..u will get more replies I am sure lol
much peace an love and hope ur build goes as planned..post some pics of it when u finish ...would love to check it out

Click to expand...

I get you there dro-man80 but I think I'm just going to go with a 35k pot to dim the whole display at once. The silver lining is, the stealth box I'm making is 6x3 so in a couple more months, I'm going to another 9 COB display for a total of 18 COB's! I'll have dimming control for each half of the box. 6 points of dimming control seems like a headache to me lol.

mrbubble said:

I get you there dro-man80 but I think I'm just going to go with a 35k pot to dim the whole display at once. The silver lining is, the stealth box I'm making is 6x3 so in a couple more months, I'm going to another 9 COB display for a total of 18 COB's! I'll have dimming control for each half of the box. 6 points of dimming control seems like a headache to me lol.

Click to expand...

tht makes sense bro,,good shit...ya i wasn't sure about the dimmer ,but like i said ,I was sure someone would of spoke on it..shout-out to @Rahz
post some pics of ya build when u rock it,,love watching the homies try the COBs for the first time..They have more hten satisfied me..good luck and happy growing my friend..peace n love

Airwalker16 said:

Do NOT use a 100k ohm pot for 3 drivers. Like Rahz said, 100k/ number of drivers. 33k is hsrd to find so I'd go with 35k if you can't find it

Click to expand...

Ya my man thts kind of what the whole "Thats something you should make sure works before doing " part meant lol

Okay everyone, another quick question,

My cab height is vertically limited to 54 inches. I think that after LST/ scrogging, I'll have anywhere between 18-12 inches of vertical space between the canopy and the COBS during the end of flower. The CLU048 is a perfect candidate, but I can actually save a lot of building time and money if I were to go with 4 CLU058's to cover 3x3. This is tempting bc my budget is tight.

My goal is maximizing everything (spread, penetration, yield) and I plan on building the cab with orca film, and no optics. Can I get away with the CLU058's being 12 inches away with minimal dimming? Trying to push up to 400watts the through out flower

^actually I decided to go with the CLU048. I realized I need to keep my heat sinks passive