Last time I checked Tommy didn't own any of my products -- unless he bought a used one somewhere I'm pretty sure he still doesn't, so I fail to see how he is a "Sundown guy." He also posted IA 20.1 pictures -- why isn't he an "IA guy" as well?
And what gives you the idea that Sundown uses "burnt Atomic boards?" Good job putting out completely false information.
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As for the rest of the thread... I don't see where the debate is. Lets break it down:
1) The 2k6d is a powerful amp and puts out over 3kw, we can agree on this
2) The 2k6d is less efficient than a pair of 1500Ds, this has been demonstrated
3) The 2k6d has less than 1/4 of the heatsink mass of two 1500Ds
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Therefore, the less efficient amp with substantially less cooling capability will be running it's devices hotter and pushing more current through each one.
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We all know that heat is the enemy of semiconductor devices... so what conclusion can one draw? That the amp with parts running at a much higher temperature and much closer to the sheer package size limitations of current is much less likely to have a long life span.
Is there any debate about the above points? It doesn't mean that every amp is going to fail but it does mean that the likelihood is increased. For this same reason I recently tooled up a new heatsink with even more thermal mass and surface area for my lines to further reduce operating temperature for even longer life.
There is no debate that the Stetsom Vulcan line can put out a great deal of power in the SPL lanes -- I don't believe that was questioned. One thing that does bother ME is the way they rate the current draw on their lines. The 2k6d holds most of the records in nSPL since they use their own fusing to fit into the 200-amp class with an amp that draws over 300 amps of current (as any 3kw amp will do, my 3000D calls for a 300-amp fuse as it should). As the test conducted on ROE points out this amp will quickly blow a different brand of 200-amp fuse.
It also bothers me that people believe that using so few devices has no draw-backs... regardless of what part number the devices are a given package has physical limitations regardless of the ratings. No matter what a TO-247 case FET is rated for, that package can only handle so much current and dissipate so much heat from the limited amount of contact area present on the casing. And again, does this necessarily mean they will pop left and right? No -- obviously not all of them fail or we wouldn't be having a debate. It simply means that the devices are strained hard and the probability of failure is higher.
If Stetsom is using the particular devices I suspect they are they did pick the best ones for doing the job with the fewest parts, but it is not without it's drawbacks (eg: reduced efficiency, reduced life span). It's a balancing act and they picked what they wanted the most -- most output for a given size.
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All that being said -- if you like your amp, thats great! If it works for you, thats great! Obviously you run what you do for a reason, glad you like it //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
