Thank you everyone for suggestions. Turns out the problem was that the person who owned this car before me had a 3rd party audio system, and when they put the original back in they didn't bother to remake the original connectors, so only the tweeters were pumping out sound. I had the Ford dealer fix it under warranty, and since then have been very happy with the Mach 460 sound ..... that is after I got over feeling like a bit of a dumba$$.
