Coogz, if I remember correctly you are running a XD700/5. On page 10 of the manual it says, "Subwoofer loads below 2 ohms nominal are not recommended and may cause the amplifier to initiate a protection mode which reduces power output." So you'll need to wire it in series (4 ohms). Just remember the XD700/5 subwoofer output is 200W@4ohms or 300W@2ohms.
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