Originally Posted by gtflash
what heat, from where?
From the LED's. They have a power dissipation of about 3.4V (LED forward voltage) x 1 amp (drive current.) 3.5 watts each. Supposedly, max junction temp allowed is 180C, so I wanted to keep it well under that at the heatsink (and I didn't have the patience to work through all the formulae to figure out exactly what I'm running at.)
Once I get the unit mounted, I'll see about dropping the drive current based on how much light I actually need to get out of the thing. Though, I'm thinking about shrinking the size of the enclosure, and putting one on either side of the console. If that's the case, I'll install an adjustable current driver instead of the fixed one in place now.