Unless you want to use 225w 2ohm resistors, I wouldn't recommend wiring the four together on two channel outputs.
The ratings for the speakers could be for the application Infinity made them for, or to get the same acoustic spec in different sizes. Not familiar with the product line, so can't tell you.
Or you could go ahead, wire them up and don't crank up the volume. Personally, I don't think they'll sound good this way.
A Hui Hou
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