Wayne Parham Messages: 18791 Registered: January 2001
Illuminati (33rd Degree)
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.