This new option adds a machined aluminum compression plug to the pole which helps channel all of the air under the dustcap around the coil for better cooling. To aid with this increased airflow we also add 6 axial cooling channels in the top plate. Along with increased thermal capacity comes the addition of an extra spider and a changed spider pack for a little extra mechanical ability.
All of these new features increase power handling from 200-500 Watts depending on the application.
link
theres a whole forum there talkin' about Fi's subs, you might find other info there 
Edited by *316Flattop* (07/10/08 05:50 AM)
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Maino -- It's cool nuccas hated on Jesus
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