These old circuit techniques fascinate me, so why the two main types of field coil speakers, high impedance field coil and the lower impedance coil, would it be fair to say that the higher impedance field coil would make a more sensitive speaker? If so then would it be fair to say that the high Z was used in lower gain receivers and that the low Z was used in higher gain receivers or is there no particular rule, anyone know?
Lawrence.
Lawrence.
