I just bought a 2003 350z base and the sound system is horrible and muted sounding. I would appreciate any suggestions on what speakers if any are an easy and relatively inexpensive swap. Any help would be greatly appreciated.

 

The front and rear speakers are all 6.5's.........Now, going the cheap route,,I would change them out for coax.'s....Alpine/Infinity/ Rockford/ ect. ect. make a good/cheap speaker. You will need spacers for the front,,,unless you cut out stock speaker and use outter plastic shell for spacer.

I guess it depends on your price and what sound you are looking for.

I hope this helps,,,Keep us posted..