i’ll not buy another led until..

i’d be willing to pay 10-20% extra to cover the build and shipping costs of bigger heatsinks

  • yes

    Votes: 14 46.7%

  • no

    Votes: 16 53.3%
  • Total voters
    30
crimsonecho said:
i wouldnt call it a guess tho he had measurement and although the also states that the test included a small group of lights for each brand (1 for each i guess) the numbers are there and the heat is there too,

again you make the assumptions you’re free to do of course but should speculations about future tech justify subpar designs and false advertisement.

i know that we’ll not reach the density of the cobs you can run a cob on those flimsy heatsinks for sure. it’ll burn out very very fast, but why i’m saying is mid sized smds still put out a shit ton of heat.

so again when you buy a 680w light and you cant run it at 100% because you know the fixture cant handle it properly have you really bought a 680w fixture. imo no.
Click to expand...
you may say that, but honestly, do the math.

1 foot EB3 strip
2.54 x 28 =71cm2
13.4W
0.18W per square cm.

1818 cititzen
2.8x2.8 =7,84cm2
35W
4.4W per square cm.

pretty much all people here buy a light which is overpowered for their needs and none runs it a 100% 4y long without pause.
again 4y is a long time, pretty much all here have replaced their lamp within this timespan anyway.
but yea, the manufactorers could do better points have been mentioned here.
 
MICHI-CAN said:
Something we purist pursue. Oscilloscopes and tube amps are dangerous fun!!

Just grin and bookmark that. Dogs and cats avoid it.
Click to expand...
I get to hear that sound all the time,it's called tinnitus from listening to all those loud stereos you guys have been talking about. Just a friendly warning. Years of sitting right under running jet engines finished it off but four 12" woofers in a sealed box with too many watts for a little Mustang was what started me down the road to being 90% deaf in my left ear. Rock on :mrgreen:
 
crimsonecho said:
yeah my lumatek attis is the same way at 20 you cant feel it, at 40 its warm, at 60 the heat is there definitely i havent upped the wattage more than that because i want to keep them cool. and i believe these lumatek fixture are some of the cooler ones in the market. only opticled peaked my interest with their thermal management but its a hassle to ship internationally etc..
Click to expand...

Lumetek def run cooler for a 1k watt hood, but not cool
IMG-20220518-WA0004.jpg
 
FirstCavApache64 said:
I get to hear that sound all the time,it's called tinnitus from listening to all those loud stereos you guys have been talking about. Just a friendly warning. Years of sitting right under running jet engines finished it off but four 12" woofers in a sealed box with too many watts for a little Mustang was what started me down the road to being 90% deaf in my left ear. Rock on :mrgreen:
Click to expand...
I have had ear plugs since about 5 and the outlaw sprints on dirt. I hear better than most dogs and everyone I know. Cover them ears. May save your life one day. And I ot to listen to 8" shell mills taking too many thousandths or my air turbine in my electrostatic spray gun. It was 1300-1600Mhz.
 
When I was growing up, nobody ever really cared about ear plugs. It just wasn't a thing. By the time I realized how important they are it was too late but I stressed it with my kids around the shooting range, at the track, anything loud. Hopefully it saves them from having it. It sucks.
 
FirstCavApache64 said:
When I was growing up, nobody ever really cared about ear plugs. It just wasn't a thing. By the time I realized how important they are it was too late but I stressed it with my kids around the shooting range, at the track, anything loud. Hopefully it saves them from having it. It sucks.
Click to expand...
I'm still smacking my 17 year olds had for ear buds. Sucks his head is too big for most headsets. And refuses to openly play it.
 
cobshopgrow said:
you may say that, but honestly, do the math.

1 foot EB3 strip
2.54 x 28 =71cm2
13.4W
0.18W per square cm.

1818 cititzen
2.8x2.8 =7,84cm2
35W
4.4W per square cm.

pretty much all people here buy a light which is overpowered for their needs and none runs it a 100% 4y long without pause.
again 4y is a long time, pretty much all here have replaced their lamp within this timespan anyway.
but yea, the manufactorers could do better points have been mentioned here.
Click to expand...

the ebs you quoted are nothing like what mars or any other bar type light manufacturers use. they cram those diodes so close to each other its running almost as dense as cobs.

i think 4 years is a decent amount of time not arguing that but everyone changes their light in 4 years is another speculation imo. maybe they wouldnt if they didn’t see significant par loss.

can you do the same math with a mars pcb for example? what 100cm long about 10cm wide? running at 100w? still a shit ton of heat. nothing like and underdriven eb strip.

in the original video migro runs the lights for 6K hours to reach at that conclusion. so its not a years based experiment. you can reach 6K hours in a year with veg and flower with photos, if growing autos faster. and the lights he used are mostly cobs with big chunky spikey heatsinks. but doesnt matter much, he sees 40-50C on those heatsinks and i definitely believe if i were to push my lumatek 100% i’d see similar temps and i’m pretty sure mars hydro runs even hotter because the diode density is incomparable to my lumatek etc.

4 years to q80 may be an overestimation of what it’ll produce over the years for most lights.

somehow somewhere along the way companies started pushing these light without proper heatsinks and thermal management because people thought hey these are not dense as cobs so they dont need much cooling i guess but your underdriven eb strips does not have much in common with what these companies produce
 
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