Ok great. I pulled the door panel yesterday. The tweeter is labeled 8 ohm, and the midwoofer is labeled 2 ohm. If I install a 4 ohm tweeter and a 4 ohm mid, won't I increase the highs and decrease the mid/lows?

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2004 BMW X5 3.0i - Mine
2011 BMW 328i xDrive - Hers
2002 BMW 325xi - waiting for a new owner