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I really new to actually getting a sub and an amp so i wanted some advice before i make any purchases. I was thinking about getting the Infinity Kappa 100.3SE subwoofer and an MTX Thunder 251D amp or the Rockford Fosgate Punch 301 M. Im not looking for a big high end system but i also dont want to be something thats not worth the money. Im just looking to get a sub and amp combination that will give me some bass to my music but not rattle any windows or antything. so if i could get some advice on the parts i told you or get advice on something. Im not looking to spend more than around $300 for both. Thanx.