Noob needing help on subwoofer choice

[jdowell]

I have an Alpine amp MRP-M500, and I had a 12" Rockford Fosgate P1S2-12 subwoofer until I blew it the other day. I would like to replace it with another 12" Rockford sub, and I found the same one on Amazon for a fairly cheaper price, but I have the option of getting it in a 2 Ohm or a 4 Ohm. Now I was hoping someone could help me out here and point me in the right direction on what to buy. Maybe search the amp and view the specs to tell me what to buy. I have it in a sealed box by the way. Thank you!

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[Jeffdachef 5,000+ posts]

get the 4 ohm sub and wire it parallel and it will be fully powered by the amp.