as long as they are reversed from each other, should be fine.

what you drew confuses me, and what is the coil configuration of the subs?.....assuming they a dual 2's
look at this diagram and just reverse the speaker on the right's + and - connection where they have the wires going, so the two connectors under the "d" in the word "load".....this should yield a 2 Ohm load.
I'm a bit hazzy this morning so someone correct me if I'm wrong and please test with a DMM before hooking this to an amp.

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