Doesn't answer my question, though.

From the FAQ: The voltage can be in the range of about 12v-16v DC, the exact voltage doesn't matter much.

I run my on 12V, @ 3amps on a regular basis with no ill affects. Your specs should be fine, worst case scenario is the drive(s) don't have enough power to spinup and you have to find a more powerful supply. Just make sure it is center positive so you don't fry anything.

-Mike