Klipsch Triple neodymium motor design Shown without horn and phase plug.
The first three links are large organizations in the audio community. The Audio Engineering Society, The National Sound Contractors Association and The Acoustical Society of America. Great links to follow.
Scan-Speak Illuminator , high excursion, under hung motor with neodymium magnet Open frame for cooling reduces power compression.
For more information on audiophile Neodymium speakers please visit Madisound Speakers
Pictured below is the B-Hive motor. The pot structure simply screws onto the basket allowing the end user to change the cone/coil/basket assembly for quick repair or change of design parameters.