Okay I have the B-52 Lg412 speaker cabinet, and the website does not say whether it is mono or stereo, but it has a left and a right input that are labeled In/Out.

So far I have been running my amplifiers left input into the cabinet's left input. Does this mean I've only been using 2 of the 4 speakers the whole time? And would getting another speaker cable and running the right input into the right cabinet input give me all four speakers at once? Or is it already doing that. It is 8ohms by the way.
That loser shit's right out the window!