http://www.dualav.com/support/manuals/xpa.pdf
^pdf of the manual
rated 75 watts RMS per channel at 2 ohms per channel
and they should be 6 1/2 inches also :-\
i used this to power my JBL GT4-12 sub (is 4 ohms so bridged it) but it wasnt anywhere near the capacity of the sub so i thought i...