Are these two compatable for a (kicker sx900 4ohm amp and a kicker 2ohm sub will they work together? How will they be wired together. From the sub to the amp as the sub has four connections (2 positives and 2 negetives).
Yeah, that amp will work. You should bridge the amp, then wire the two VCs on your sub in series for a 4 ohm load. You'll be getting 900w at 4 ohms bridged.