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Hey Supra, my 20 cxa3070 AB's with ideal cobholders have arrived :) 10x Alpine 11 Plus are on the way, as so are the 50K potmeters 10 coolers will follow later the only thing for me to decide is which drivers to use (it will be Meanwell though) and if i'd remove the preapplied heatpad on the...

Maybe a dumb question, but how do you wire 2 drivers together with a 50k pot and are there other things to consider when choosing a pot meter ? I get lost :) http://components.arrow.com/part/search/50k pot

Can you give me a link ? Where are they from ?

Show them anyway :)

It should go whole length, so actually 130cm and if they're in 1 long piece i think it will be more solid, the entire shelf i mean, but it's a lot of weigth indeed ps: maybe the heatsinks themself can be the shelf with a plate on top, serieusly reinforced ofcourse

I just got reply from CBD-lightning, the IT5498 costs 12,94€/100mm excl. BTW so one 130cm bar would cost 204€ incl taxes without shipping, that's pricy

the idea is to blow air from one end to another and to have 2 bars hanging on a shelf (L-profiles) :) with wholes at the the end of the shelf for the ventilators, so i don't need a case but I want the height to be as little as possible weight shoudn't be a problem i guess since i do not plan to...

I got the cobs and cobholders at Arrow United States, should have watched the dollar more before ordering :(, mails and ideas date from a few months ago. It had to go fast and it did cost me way to much money (extra taxes :( , first plan was to go through another buddy of mine that lives in the...

thanks Stardustsailor, i'm awaiting authorisation to see prices

I'm mailing them for prices right now, my cobs have arrived 20x cxa3070 AB with cobholders :) Could somebody calculate the max. heat dissipation for 1 IT 5498 (1261mm) with 0,62°C/W for 150mm I'm thinking 5 per bar with 2 vents on each end, just trying to figure out how high i could go :)

Hey just an update about FisherElectronic, indeed quiet pricy ! SK 535 500 SA Qty: 2 pcs Price: € 378,-- ea. + freight costs + 19 % tax Leadtime: 2 – 3 weeks after receipt of payment Value of order: € 25,-- Conditions of delivery: ex works Conditions of payment: in advance Validity of offer...

R2 means unit with 2 red rows and 3 white rows (6500k), i think...

I'm quiet curious myself, before i stumbled on to this forum and cxa3070's, i was also looking at Apache Tech

have a look here, you can see how much voltage you need at which current and then multiply

good point to bring up, and what about reflectors or not, can't really see why not used more, ex 90° especially with high voltage drivers because of the cob holders being safer, would bring the cost up though

@Greengenes707 , where do you get those prices from, which site ?

I do have 240V, how's that an advantage ?

yo could always use a fake wall/board to lower your total footage, just an idea

Glad i can help, most of the numbers are from Supra, some are 'guestimated' ex 600mA, so not everything is 100% correct, but it's good to get an idea. Maybe we could make a sticky with files for calculation etc, it's to difficult to find them in a 114page thread (and counting :bigjoint:) 2...

What are the best 630nm leds for the moment ? and how do you go from W to PAR W ?