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Speaker Asylum General speaker questions for audio and home theater. |
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Speaker Asylum General speaker questions for audio and home theater. |
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In Reply to: Re: reply posted by David Aiken on March 2, 2007 at 12:53:22:
Assuming a second order crossover between the mains and the sub, the sub's output would lag by 1/2 wavelength if I recall correctly. With a fourth order crossover, the sub's output would lag by 1 wavelength. In either event, there is indeed a case to be made for either using a compensating time delay or digitial time/phase correction on the main speakers or, if that's not available, locating the subs 1/2 to 1 wavelength closer to the listening position at the crossover frequency (which may not be physically possible).Locating the subs at the same distance as the main speakers would not address the phase lag resulting from an analog crossover - unless it was a true first order crossover.
Unless there's digital equalization or other digital processing circuitry involved, the subwoofer's internal electronics will impose negligible time delay. So in almost all cases, it's only the phase lag we would be concerned with. And locating two subwoofers in the same plane as the main speakers is doesn't address the phase lag. Placing them closer to the listening position than the main speakers would to a certain extent. I would suggest doing so asymmetrically.
Duke
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Follow Ups
- Re: reply - Duke 14:40:58 03/02/07 (1)
- Re: reply - David Aiken 19:44:04 03/02/07 (0)
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