There are two types of audio systems in the 5th Gen Camaros. First is the base system. This system consists of the head unit and 7 speakers which are powered by the head unit. One 6.5" midrange in each front door, one tweeter in each front door near the corner of the window, One 3.5" in the center dash, and two rear 6x9s.
The Boston Acoustic Premium System consists of the head unit, a 7-channel amp, and 9 speakers. One 6.5" midrange in each front door, one tweeter in each front door near the corner of the window, One 3.5" in the center dash, and two rear 6x9s. The door speakers are fed by one channel each from the amp. The line splits off to both the mid and tweet and the tweet simply has a capacitor on it. The Boston rear 6x9s are actually two speakers in one. Each one contains a 6x9 (sub) and a coaxially mounted tweeter. They are also bi-amp'd, meaning the tweet and sub are fed separately by the amp. In other words, the amp sends 2 channels to each rear speaker. The sub is fed low frequencies from the amp and the tweeter is fed highs. This is why swapping the rear speakers to aftermarkets is somewhat difficult, because neither set of wires is full-range. It is always best to change out the amp first (using our FARK item# 5G-FARK) kit first. Doing the amp first, will set you up much better for future speaker upgrades if desired. Although we have found that the boston amp is the weakest link in the system and simply swapping it out for a better aftermarket amp will give you much better sound, even if you don't change the speakers.