Here is my factory speaker setup, I don't have a subwoofer
Front: two tweeters and two 6.5"
Rear: two 6x9's
Radio Outputs:
Front or Mids (Connected to Front L+R)
Rear or Highs (Connected to Rear L+R)
Subwoofer
The 6x9 in the rear only play treble but capable of very high bass compared to...