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      09-24-2012, 11:24 AM   #7
WilliamS
GoofBall
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Drives: 2008 E92 N54 Xdrive
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Time alignment is the true answer. Taking the Woofer out of phase can have other acoustic effects that you may or may not hear. The proper way is to either have proper time alignment, or remove the underseats from the equation.

Again this may work for some frequencies but not all.