Ok. This is slightly diffferent ( by my reading) than described
over at full range driver site. I've done the break-in routine on two
pairs of speaks. Method used was putting the speaks face to face and
bolting them together. I checked the polarity by using a
small battery and test leads and hooked up the wires push and
pull respectively. It still makes a good amount of racket.
When doing this procedure it'd be handy to have a small safe
with wire leads drilled in the back. :-)