I am working on improving the sound system in my 05 Supercrew and would like some advice from the guru's out there. I know very little about the techinical aspects of this stuff, so I apologize in advance if I butcher the terms here.

I picked up a Kenwood Excelon KDC-X689 CD/MP3 Receiver after looking at a bunch of different makes and models. I got that one because it had 3 pre-outs and aux in so I figuire I can upgrade it pretty easily and it's a good unit. I also got it because I like the look. ..kinda fits the interior I think. At the same time I picked up four Kicker 05KS68 6"x8" 2-Way Speakers. I got all of it from Crutchfield.

This may seem odd to some, but I used to have a Mustang MACH 1 (2004, not the old one) with the Mach 460 sound system and really liked the sound of it. I am looking to make the F150 similar to that. Nothing that will break windows, but something that will have good sound and bass.

Today I installed the head unit and put the new speakers in the front doors only. The rear is still stock and I do not have the factory sub. I don't know what I was expecting, but it was kinda anti-climatic. The volume seems weak and low with not much bass. I have messed with the "eq" type settings and it is a little cleaner sound, but I am looking for more.

WHat I would like is more volume with a clean "crisp" sound and bass that I can hear and feel..as opposed to just shaking the windows.

I am open to adding components in the future, but without going "whole hog" what could I do? I also have not opened one of the set of speakers, so I suppose I could return those and swap them out with something better if you all suggest.

Also, any good websites that I can learn more on the subject to help?

Thanks and Happy Holidays!
Dave