hyundai santa fe 03 door and rear speaker

This past November I purchased an 05 Santa Fe due a deer charging my drivers side door on a busy highway. Was going to wait till after the new year to replace the head unit, but just couldn't wait. Replaced the double din Monsoon radio with an after market Kenwood kdc-mp345u, not the greatest radio but I like the USB on the front and the Kenwood name.

Now that the holidays are over I went out and bought two pairs of Kenwood KFC-1662s 6-1/2" 3-way 180 watt to replace the factory speakers in the front doors and the back side panels. Replaced the back ones with little to no problems, had to buy self tapping screws to mount them due to them being a little smaller then the original speakers even though the fit guide on Best Buy's website said they would fit.

Didn't really have any issues installing the front speakers on the doors but I noticed the speakers don't sound as good as the back speakers. Not sure if I wired them right due to the original speakers having four wires and the new ones only needing two, I tried a few different ways of wiring them and can't figure it out. They have a loud cuppy bass sound and the rest of the sound is very faint.

Kind of looking for the easy way out here since I am not the most handy guy. Searched the forums and couldn't find an answer so any help would be greatly appreciated. Used the site for replacing the speakers out in my 03 Sonata and replacing the speakers, wood grain dash kit and after market radio in my current 05 Santa Fe.

Thanks,
Gerard