Right set up for my car audio?

hey guys, heres the go i have a 1200 watt pioneer sub, might get a second one soon. i have 2 amps a 500 watt planet audio one 4x30 watts at 12 volts and a sony amp not sure on the output as i got it off a mate and it has no details but it is expensive and 4 channel i know that much. so the question is will one or another of the amps actually power 1 or 2 subs and what one is the preferred amp to use?