I have both subs wired like this:
http://a248.e.akamai.net/pix.crutchfield.com/ca/learningcenter/car/subwoofer_wiring/1DVC_4-ohm_mono.jpg
So I did ^^^ that to each sub and then connected both sets of positive/negative wires to the amp. It seemed like a good idea, but I could definitely be...