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Hello! Is it possible to get more directivity in the bass region, 20-80Hz, with dipole subwoofers? My first idea was a ring of multiple speakers but I guess a 4m (13.1ft) in diameter ring would only have 6dB directivity at 344/4=86Hz? Cheers, Mattias
Once one is below the Schroeder frequency, directivity is not really a very valid concept as the rooms modal pattern dominates the situation regardless of the source type. Although different source types do excite the modes differently, directivity is not really the issue. Now from say 200-500 Hz a dipole directivity could be of use, but I've tried to make this work and can't seem to work it out effectivly.
OK, but if I live in an appartment and would like to disturb the neighbors as little as possible. Would this help to reduce the bass they're hearing? Cheers, Mattias
Only to the extent that the dipoles produce much less bass. Issolating bass is by far the most diffiuclt of all noise control problems. Complete structural issolation is usually required and this is completely out of the question unless you own the space. If you don't own the space then the only solution is the volume conrol.
I was afraid that would be your answer As always, you give fast and good answers to questions. Thanks alot Earl!