Posted by Wayne Parham [ 67.66.228.230 ] on March 04, 2004 at 18:19:19:
In Reply to: Re: Flux symmetry confirmation posted by Adrian Mack on March 04, 2004 at 03:42:58:
To provide physical symmetry, the magnet is made so that it has the same flux above and below the voice coil, when no current is applied. This is a matter of making the fixed magnet physically symmetrical, but does not address the issue of flux modulation from electromagnetism. The use of a flux stabilization ring generates counteractive flux to the modulating force of the field coil. Magnums incorporate such a device.
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