*pasted from yahoo answers

Hi there.
I just replaced my stock car stereo.
Headunit: Pioneer DEH-2250UBG
And a pair of 6" TS-G1613R in my front doors. (co axial)

It already sounds nice, but seems to be lacking.
Should I get 2 speakers for the rear?
I'd like to keep it really basic, without the amp and equalizer if possible.
Thanks for the input guys!

additional info: i have nothing in the rear. no stocks or anything
and its a honda exi mt 1998

salamat mga master