right now i have a kenwood 1800w amp running my 2 P3. ( someone told me that kenwood over-rates their power on their amps is that true?) and i i buy a JL audio kicker or rockford 2000 amp. would it make my P3 louder?
The general rule for adding output is, a 3db gain every time you double the power. Also, a 3db gain is also considered to be a doubling of the intensity of the sound wave.
To prove the overrating part, check this link. http://www.caraudiomag.com/reviews/caep_0811_kenwood_kac_9104d_review/index.html In November, Car Audio and Electronics came up with similar numbers to mine in there test of the Kenwood KAC-9104D