Good mod! I miss the golden and silver eras of rock when I heard this LED Zeppelin track.
I did a little more testing at 7 amps/220 watts. It heats up rather fast. The fan is going full blast after a minute or so. It starts going into thermal stepdown after a couple of minutes. Seems to level off at around 6 amps/180 watts.
Looks like a an lamp lol. Outdoor shots PLEASE!
I'm sorry if this has been covered before, and I must admit I am being lazy, but how does this compare to say - the amount of MT-G2's (or XM-L2 etc) that you would need to have an equivalent output?
I mean - are discreet emitters like that more efficient than these arrays, and if so would it be a better bet to use multiple emitters rather than one large array? I'm thinking here of the drop LED efficiency as the input power increases. More LEDs at lower power > less LEDs at higher power.
MASSIVE generalization of course, but I think you can understand what I'm rambling on about...maybe 
The MTG2 is a multi-emitter array. Arrays are more efficient than single emitters because each LED is driven less hard than an equivalent single emitter. The C9000 has 81 (?) LEDs in its array. When driven at its published drive level, each LED is around 1 watt.
That picture of it next to the srk cracks me up!
Try not to get arrested by ATF when taking outside beamshots. lol
Awesome! Can't wait for beam shots!
'So much flood even Noah would despair'. LMAO!
[quote=texaspyro]
Sorry I screwed that question up. I'm not really sure I asked it correctly. I definitely got my terminology wrong. Basically, for the same power input would you get more light out of say multiple MTG/XML/XPG etc emitters, than one of these larger arrays? For some reason I have always been under the assumption that these large arrays are not as efficient as their smaller cousins. Probably wrong and certainly never based of any actual research 
You could try one of these bad boys in a car mounted light mattaus, boost voltage to 30 and turn the night into blazing daylight! The voltage requirements would seem to be the problem from what I can see. Output is certainly impressive! But with heat sinking and input power being what they are, you’re certainly not going to run this in a pocket light!
The beast Texas Pyro made is ~13 inches wide and ~18 inches tall with a 4” diameter battery tube! “Flashlight” is not really the descriptive word of choice…Photon Cannon?
Also of note is run time before step-down, even fan cooled. So this shows that massive heat sinking in combination with air cooling or liquid cooling would be a must for extended run times at anywhere near full power.
Added a couple of beamshots to post 4…
I wondered what all the strange light action was on the horizon. Your latest pictures explains everything. So how many people did you blind?
Spectacular wall of light! 8)
Absolutely awesome!
Please make a youtube video about it and hopefully we won't have to look at this one any longer 
Yes, if possible, pls make a short video, possibly with some other baseline lights for comparison 
None of my cameras that work do videos… and my phone is an original iphone…
Jailbreak it and use cycorder (allows you to take videos with it).
Added materials and tools and comments to post 4…
My camera does full HD 1920x1080 at 24 or 30 fps. It’s full frame sensor with a 17mm lens would easily show how awesomely wide the beam is. Would be cool to have a football field to use, or even a baseball field. We could go on top of one of the east side skyskrapers and light up Justin over in Tyler, have him wave at us for the video. lol
That’s a beast, pyro. 180W sustained is impressive. 20,000 lumens is quite the light fixture (I’m thinking high bay). You have a portable version, even if it only operates for a few minutes until the battery depletes.
Actually, should be able to run it for around an hour. Maybe 20 minutes or so of full-ish 210 watt output before the battery voltage falls enough for the light to start dropping off. Thermal control would have kicked in before that and reduced to drive to around 160 watts.
for a photo session! Portable sunshine, impressive indeed! I have a light stand that will go up to 13’ 6”, that would get this monster up high enough to light a very nice area for shooting pics, seniors, family portraits, midnight sunbathers…