"Eiron" wrote in message
...
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?

**There are big differences, but it depends on the specs of the ferrite. In
one case I worked on, the manufacturer shipped a batch of speakers, with the
wrong type of ferrite fitted. Saturation occurred at around 6 VRMS. Since
the speakers were 4 Ohm types, this corresponded to around 10 Watts input
power. Complaints began arriving that the speakers distorted at modest power
levels. A quick sine wave test confirmed the problem. Replacement with
equivalent resistance air core inductors solved the problem.


--
Trevor Wilson
www.rageaudio.com.au



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