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Planar Speaker Asylum Welcome! Need support, you got it. Or share your ideas and experiences. |
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In Reply to: are there any Marchand Xover enhancements that you would suggest ? posted by Carl G on April 17, 2015 at 19:03:34:
Ask Phil to customize the filters to match the OEM filters as close as possible. Do not use the Magnepan recommended xo points for active biamping as they are only a gross approximation. For the 20.1 The mid HP filter is first order at 360 Hz and a 20k resistor and 22 nf cap on Phil's module will be near perfect. The LP filter is 3rd order at 110 Hz but is not quite an orthodox Butterworth although fairly close. From my spreadsheet I got the following values: R4=39K C5=39nf R6=27K C7=27nf R9=27K C10=100nf. You can have Phil confirm those.
One other suggestion, get the three way model just in case you decide to tri-amp in the future.
"Our head is round in order to allow our thoughts to change direction." Francis Picabia
Edits: 04/19/15
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Follow Ups
- RE: are there any Marchand Xover enhancements that you would suggest ? - neolith 09:00:29 04/19/15 (0)
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