Reply to thread

Message: <blockquote data-quote="sundownz" data-source="post: 3427980" data-attributes="member: 549523">You cut the top plate into a [ shape and the pole into a ] shape. The cut-out area is referred to as the "rebate" -- this rebate steers the flux towards the two separate gaps on either side of itself to extend the BL field out farther to either side than a motor without the rebate. This creates a flat BL curve and thus less BL distortion and more linear x-max.Some people get the idea that XBL^2 actually loses BL, but it really does not, it steers it around... in some motors I've drawn up in FEA I was able to get a higher BL with XBL^2 than with other "standard"  topologies. Even in motors where the "at rest" BL is a bit lower, the average BL over the useful range of the speaker will be higher.</blockquote>

Top