I have a kenwood 50x4 mp3 headunit and want to run a set on 6.5 component speakers that will not break my budget. I do not totally understand the concept of RMS but I know the RMS on my headunit is only 22. How do I get good sound when all components seem to be 50RMS or more? I was considering the Rockford Fosgate FNP2614 for $99