
Originally Posted by
HoldenCommodoreVP
The reason you wont notice an improvement, or much of an improvement, is lets say, you factory stereo puts out 10W rms per channel ( per speaker) even if you were to swap your standard speakers for a pair of $500 speakers, they will still only be getting the same amount of power, and will be limited to the same tuning capabilities of the factory head unit.
Also, when looking to upgrade your speakers for better sound, the focus should be on the front speakers, not on the rear. By installing better speakers in the rear, your drawing the sound stage away from yourself.