They are quadpolar (drivers firing in 4 different directions) by design, but bipolar (driver firing in two different directions) in philosophy. Both bipolar and quadpolars have the drivers wired in phase. Dipoles have drivers firing in two different directions, like bipoles, but the driverws are wired out of phase to make the sound seem more diffused.

Jack

"People generally quarrel because they cannot argue." - G. K. Chesterton