I have a 2007 Honda Civic SI which has a factory radio wired to a factory amplifier powering an 8" factory subwoofer along with the 4 other door speakers and 2 tweeters.
I have a 1700 watt rms Hifonics Brutus Class D monoblock amp along with 2 12" Kicker subwoofers powered at 800 watt rms each...
