no troubles. just runs them at the "safest" and highest voltage. i have some dual coils from ikenvape and he says to run them at 3.XX-4.3v or something. my provari runs it at 4.2v no errors. besides if i went above that i think it would taste burnt.
It's not putting them at the 'safest' voltage. A lot of people (Me including) do not like dual coils at anything below 5/6v. The darwin and the Provari both severely limit power output with a dual coil. The darwin can push a max of 12.7 (or something close to it) watts total, so for a dual coil that's only 6 watts per coil.. triple coil it's even worse, 4 watts per coil. Try it... a provari/darwin can only provide up to about 4.2v to a dual/triple coil. The provari is also limited in the amount of power it can push to a dual coil.
This is a big reason I prefer my custom box-mod over any of these production mods. Why are they limited? I have a feeling it has to do with extending hardware life/warrenty claims. There is a *LOT* of current involved pushing a 1.5ohm dual/triple coil to 5-6v. Am I taking a risk of frying something pushing a dual coil to 6v? Absolutely, the hardware in my boxmod is not rated for that kind of current... but it *works fine* and I'm able to do it.
But here's the point i'm making.. for my evercool switched boxmod, I paid $55 for it. Does everything a Provari and Darwin can do, and more. Is it as durable? Probably not... Is it as asthetically pleasing? No, not even close.. but performance wise, I'm able to effectively do more with the $55 boxmod.
Then again, I've always been function over form. I would love to own a Provari or a Darwin, but I know half the time it would be sitting there, unused, because of limits built into the hardware.