So my friend blew all the speakers on my infiniti q45. Where do I go from here?
I have the 3 front deck tweeters, 2 front door speakers, and 2 rear door speakers.

I spoke with a worker at crutchfield.com he suggested
http://www.crutchfield.com/p_777P67C/So ... 67c&tp=106
and
http://www.crutchfield.com/p_1131365S/K ... tml?tp=105

He said he didn't know what to do about the 3rd tweeter, he suggested I just unplug it, or look into alternative means.

He also said to contact a local installer for the rear deck sub/speaker.

Has anyone replaced all these and are there any guides to replace these?

How hard is it to replace the tweeters in the dash?

I assume your Bose system is like others - in that the speakers are a different impedance than standard car audio speakers. If that's the case, you'll need to decide if you're replacing all of your speakers with factory units, or replacing everything with aftermarket speakers and amplifiers. You might also contact Bose to see how much they'd charge to "rebuild" your existing speakers. It may be cheaper than retrofitting the entire system if you were happy with it's performance.

I copied your thread into the Q45 forum with hopes that it'll get more attention there too.

Check out the factory service manual to help you get to the speakers... http://www.infinitiservicemanual.com

Heath