3-Series (E46, E90)Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.
Hey i have a 04 325ci w/ the harmon kardon system in it. I'm thinkin of puttin in one of my subs that i have left from my old car with an amp. its only a 10" rockford fosgate but it'll add some kick. but i'm afraid of it messing up the sound of the harmon kardon system like my system did to the bose system in my old maxima. will it have the same effect if i try this. or can i have it installed and not have any bad side effects on the purity of sound?
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