What's a good amp to power 10" subs?

down below is exactly what I have in my car...im using an older P 300-1 Rockford fosgate punch amp to power them. This amp doesnt make the subs pound at all. they sound like crap. I want people to know when I'm coming down the road sorta bass if u know what i mean...Can anyone give me an idea of what kind of amp i need and should buy to make these pound harder??? i dont really know anything about this sort of stuff. Its not exactly my area of expertise when it comes to cars.
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Dual 10" Vented Enclosure with Kicker Comp Subwoofers
4 Ohm Final Impedance
Peak Power Handling: 600 watts
RMS Power Handling: 300 watts
Oversized ports with flared ends for efficient air flow and no noise
3/4" MDF Construction
Heavy duty black carpet covering
Embroidered Kicker logo
Dimensions: 28" W x 14" H x 16-7/16" D (Bottom) x 13-7/16" D (Top)

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