Upgrading subs, new amp?

[maseyferguson05 10+ year member]

I got a pair of 10'' type r's in a small unported box. They have to be 1-2 years old now, but still do a pretty good job at shaking the car.

Anyways, i want to up my subs to 12'' type r's or maybe 12'' type s's. I'm not sure if i will even go with alpines. Will i need to upgrade my amp. Its an alpine and from what i can pull out of my *** in the freezing rain, a v12 ,ro m645 if that helps. I do believe the back speakers are also drawing power from it as well. Do i need to upgrade?

Any suggestions as far as different amps or subs? I don't wanna be spending alot and would love to save somewhere.

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[joshualittle]

What's your budget for an amp?

 

[maseyferguson05 10+ year member]

I really don't want to buy another amp if i don't have to. I'm going to have to checkout what its got for specs. All this makes my head spin.