Answers: i would love to help further, but i would have need of to know more about your stuff. mono amp? stereo amp? dual voice coil? what is the impediance? Wattage ratings? these adjectives make a huge difference contained by the answer to get the most out of your system. If you dont know afford some model numbers, or links to your stuff.
Shouldn't be too difficult. Use multi-colored wires (red/black). Your amp should be labelled positive/'negative- indistinguishable with the subs.
If you run your boss unit speaker wires to a cross-over this will split your sub frequencies away from your 4 corner speakers, you can next run this output to its own amp and connect your speakers direct to this amp.
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