Planar Speaker Asylum

RE: Musings on true-ribbon roll-off points for 3-way Maggies - corrected!! :-))

58.175.51.30

In Reply to: RE: Musings on true-ribbon roll-off points for 3-way Maggies - corrected!! :-)) posted by Jim_E on October 26, 2009 at 11:29:11

Hi Jim,
Further to Davey's comments, if you compare the 3.3 with the 3.5, you can see that the mid LP filters are similar - except the 3.3 has 0.955mH as the first inductor in the 18dB LP filter, whereas the 3.5 has 0.355mH.
lspCAD produces a very nasty mid-range frequency response for the 3.3... could Magnepan have made a mistake with the 3.3 (and it really should be 0.355mH)? After all, it's the same driver. :-))
Regards,
Andy

Edits: 10/27/09

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