No, they are the Original AppleDesign beige speakers, circa early-mid 90s? Most people mistake them for generic PC speakers, but they are far from it.Are those the speakers that came with the Cube?
I doubt that the extra 1V will hurt, and the speakers will only draw as much current as they need. You should be fine until you find another.16v and 2.2 amps...
Would this setup hurt anything?