Hey Gang, I have a 2010 Chevy Malibu with an underwhelming sound system that is very flat/underwater with no highs or lows. I am trying to isolate the issue/s in hopes to upgrade to a better overall music experience in the most inexpensive way. I am considering just replacing the front and rear...

I have a 2011 malibu LS, anyone know the impedance (ohm) rating of the stock speakers? Non-bose/non-amplified model. I've seen that the bose system has 2ohm, but nothing about the stock speakers. Thanks in advance!