Volleyguy,
Found this under the news section on the Duelund website:
They also use the CAST inductor, though he doesn't speak about it in isolation.
http://www.speakerbuilder.dk/content/getPage.asp?id=36
You may have to choose: English flag in the upper right corner, articles, tests, Duelund Coherent Audio
His findings seem to mimick yours.
Found this under the news section on the Duelund website:
They also use the CAST inductor, though he doesn't speak about it in isolation.
http://www.speakerbuilder.dk/content/getPage.asp?id=36
You may have to choose: English flag in the upper right corner, articles, tests, Duelund Coherent Audio
His findings seem to mimick yours.