I posted this in the Ultra-X13 thread, but i might get a better response from this thread. Please excuse dual posting if it offends anyone, but im looking for an answer quickly.

I just jumped on the promotion period and ordered two Ultra-X13's. Im super excited to get these as ive never had real subs before, but need help with what cables to buy. My current subs are passive so i only have speaker cable runs at present. With regards to cable requirements, i need to understand what the dual subwoofer XLR outputs do on my 976.

Are they discrete (carrying differing signals) which would require me to run two XLR cables, or are they dual Mono which would mean i could run one XLR cable to one X13 and daisy another XLR to the other sub.
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Double drywalled, "Green Glue" treated Theater
GIK acoustic treatment
Epson 8700UB Projecting on a 135" Seymour XD Audio transparent screen
Outlaw 976 Processor
Outlaw 755 amp for Center and all four surrounds
Adcom GFA 555II for Main L & R channels
Behringer EP4000 for two homemade subs
Outlaw Ultra X13 for REAL Sub Bass !
OPPO BDP103, Marantz CD63SE, Denon DP300F
2 Adcom ACE515s for AC current treatment
Newport Theater Director for AC distribution.
Speakers are all built by myself utilizing Dynaudio Drivers
Second room: Yamaha receiver, Musical fidelity X10D tubes, Carver C9 holographic pro.