Dave Plowman (News) wrote:
In article ,
TonyL wrote:
Dave Plowman (News) wrote:
In article ,
Keith G wrote:
Also, I've read your comments on suspension amd springiness again,
but still don't know exactly what it is that is directly affected
(or improved, presumably) by 'high flux density'...??

The movement of a conductor carrying a current is influenced by the
flux density acting on it. In other words the higher the flux
density the more it will move. Which is the efficiency of what is a
motor of sorts.


Being pedantic...it is the *force* on a current carrying conductor
that is affected by flux density, from F = q v × B, qv is charge
movement = current, B is flux density

Of course, the velocity of the conductor will often be roughly
proportional to the force in the real world...depending on how it is
constrained.

Trying to keep it simple for ol' Keith. A speaker which didn't move
when a current was applied to it wouldn't be much good. ;-)


He, he.

So, the higher the flux density the more the voice coil movement will
attempt to track the current flowing through it and the less it will be
affected by the suspension, the air mass that the cone is pushing against,
etc.