I recently purchased a 2003 touring with 8k miles.the previous owner had mb qarts put in the tweeters, factory door speakers. rear mid range are factory but they are out completely. when i play in any mode (cd/dvd/mp3/radio) these rear speakers dont work. Is this cause of:

1. configuration within the radio? a setting?

2. bad install?

3. blown speaker?

Can someone please advise or point me in the right direction.

Thankz.

 

Right direction: https://my350z.com/forum/forumdisplay.php?f=52