I am currently running a pioneer gm-x742 to power 2 12" jlaudio w0's. I have read that my amp puts out 240watts and I have read 200watts. Either way the subs work nice. I was thinking about getting a single 12" w3. How would my amp work with that sub?
there is absolutely no reason to replace 2 JL 12W0's with one 12W3... that is crazy. 12W0's are incredible subs, and if you aren't satisfied with them then you need another amp, head unit, equalizer, etc... Your current set up would sound much better than one 12W3.