Looking to put 4 of these into my Subaru. As of now, the front 2 speakers don't work, and there is no bass at all. The after market head unit I have now is a JVC KD-R610 that has 50Wx4. If I put 4 of those speakers in, will my system sound like most modern stock systems in cars today? I mean my parents fricken Prius has a pretty decent system and I doubt that thing has an amp so I'm guessing all the bass is coming from the speakers themselves right?