Loudspeaker magnetic circuit question

Question for the magnetic circuit experts: why is the flux density is at its highest at the purple sections of these circuits? Is it becuse of the bending of the polepiece presenting an obstruction to the flux-lines?
 

Attachments

  • FEMM1.png
    FEMM1.png
    33.9 KB · Views: 56
  • FEMM2.png
    FEMM2.png
    186.2 KB · Views: 60