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      01-07-2013, 02:16 PM   #5
VP Electricity
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Drives: F34 xDrive
Join Date: Jan 2008
Location: portland oregon

iTrader: (3)

The 660 doesn't sum internally. I haven't tried it. I think it's disco'd for 2013. I have used the CleanSweep with the highpass in the F inputs and the lowpass in the rear inputs - if you're not trying to shift the stock crossover point, summing isn't essential.
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