Subwoofer to go with Rockford punch 800a2 - Need Advice

[Jeffdachef 5,000+ posts]

I figured that was the answer. Do you suggest anything in particular?
The rockford sub I mentioned would be free. I don't mind spending some money tho

If you can get a rockford sub for free then i'd recommend putting that money in a well designed ported enclosure before buying new subs. Its the box the determines how clean and nice your bass sounds.

 

[Cheezledzul]

Alpine SWS-12D4 vs. SWA-12S4

Found these - $100

Would they be good for my amp?