Re: Rockford Fosgate Subwoofer
Rockford Fosgate subs are great, although as TICK4D said, you need to power them properly as they are a little inefficient, but will go loud when done so. Seeing as yours is the base model, it shouln't need tonnes of power on tap, just don't run it off an audioline amp or something similar. I wouldn't recommend RF amps as they are quite dear and are a little hard to justify the amount spent. Possibly look into the JL audio range, maybe a 500.1 monoblock. Would run the sub perfectly, again a little dear, but definately makes up for it in the features and quality. Also it has it's own inbuilt power regulator, and will efectlively produce 500wrms at both 14v and at 12.5v, while other amps can lose around 1/3rd of there claimed power when voltage sags below 13v.
Alpines range of amps are also worth looking into, perhaps an MRD-500. Produces a healthy 500wrms when bridged to 2 ohms, and also class D, which makes them pretty efficient compared to class AB. Another coool little feature is time correction, which makes the bass hit more accurate especially in situations were the sub will be rear loaded.
The main question is how much are you willing to spend on an amp?? There's a million and one amps out there that are perfect for the job, but it all comes down to how much you $$$ your willing to part with. The two amps I mentioned above will set you back around the $800 mark...