Hey, i have the (oldschool?) RF 400x4, and i was woundering how i would go about hooking my subs to it for low pass, i just dont get the xcard thing.. if you guys need the manual or pics, i can get you some, (btw i have two 4 ohm 12" subs hooked up to it SVC)
Let me know asap, trying to get the best out of the amp
ALSO TRYING TO SELL IT!!!