Eiron wrote:
Serge Auckland wrote:
Don Pearce wrote:

Without being able to trace the circuits I can't say for definite, but
that looks like a second order crossover. Are those chokes wound on
ferrite? If they are, this crossover has a power limit set by the
magnetic saturation of the ferrite. Your other one is a better way of
making a crossover choke.

Completely agree.

Are there any real test results showing the difference between
air and ferrite cored inductors in a crossover or is it another
evanescent chalk and cheese effect?


The difference between ferrite and air is the magnetic flux that each
coil can take before saturating. Ferrite is used as it results in
smaller coils and can use thinner wire for the same resistance or keep
the same thickness and have lower resistance and hence better Q. The
downside is that it takes a lot to saturate air whilst ferrite is
relatively easily saturated. I'll see if I can find my old college notes
regarding the actual differences.

S.