Let us now reconsider Eq. (6.47)
to see how to maximize the efficiency in terms of the actual coil dimensions. The resistance R
can be expressed in terms of the mass of the voice-coil winding M
is resistivity of voice-coil conductor in units of Ω·m. The value of κ
for different materials is given in Table 6.1
is radius of wire in m. l
is length of voice-coil winding in m.
where for simplicity we are ...