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Old 10-19-06, 12:42 PM   #63 (Link)
 
brucek
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Re: What solution do folks use for the dreaded BFD hum?


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I used the attenuation to help shape my house curve
Great..good idea..

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My crossover is at 60 Hz, that bit of phase shift is no big deal right?
Agreed.

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Should I add or subtract a foot from my receiver time delay to compensate?
Neither. The foot you add to sub speaker distance (when you use a BFD) is to compensate for the full 1 msec delay the BFD offers. A change in phase as small as this filter creates around the crossover would likely have negligable effect and could only be esatablished by doing a response check and see if you have any new dips or peaks around the 60Hz area......

brucek


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