I was thinking about putting new speakers in my 2006 Cobalt. I was wondering if it's an easy job or should I have a professional do it.

 

Easy

 

I had a professional do it for like 120 bucks. Waste. I later realized someone of my extremely low car stereo knowledge could have done it just as fast... and BETTER because no one cares about your car except you.

 

I just swapped out my door speakers and my rear speakers , my headunit all by following the great how-to's on the site here , made it quite easy when you know what to expect before you start!
I also took out the factory sub and added 2 type r 10's and now the car is somewhat loud lol
That how-to section is awesome.