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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: graphs posted by unclestu on October 27, 2013 at 12:54:37:
The 'vast majority' of speakers having one driver in reversed polarity seems to be around 40%.
Anyway, an inverse polarity is required for speakers using second-order filters, and the Linkwitz-Riley second order is my favorite filter when properly implemented.
You could imagine a large distance (in depth) between drivers to preclude the necessity to reverse the polarity of one of the drivers, but it would also be a 'reversed polarity', geometric instead of electric.
Siegfried Linkwitz himself considers that the absolute phase is audible in the low frequencies, a lot less or not at all in the highs (which makes the polarity of the tweeter irrelevant, except for the response in the crossover region). The problem there is that there are large delays (phase changes) created by inertia, friction, 360° 'out-of-phase' vents in bass-reflex enclosures, etc.
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- Phase - Belgarchi 21:05:50 10/27/13 (0)
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