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In Reply to: RE: LP filter elbow posted by Roger Gustavsson on May 04, 2015 at 06:38:31
He can still implement a 4th order active LP and 1st order HP combo like MWE has as the speaker drivers are not that different. Given a choice rather than using an active XO that was there anyways, I would have used a 3rd order 1st order combo.
Follow Ups:
your rationale for 3rd order LP for the 3.6. XM9 boards are only $70, (easily doable) and could be ordered as 3rd order; I know Magnepan rec's 3rd but the stock passive is 4th and wonder if it would be worthwhile trying the 3rd. Any illumination would be appreciated.
"The thought that life could be better is woven indelibly into our hearts and our brains" -Paul Simon
If you go that way be prepared for trying out a wide variety of values for both the mid HP and bass LP in the 3rd +1 XOs.
If you like what you are getting then stick with it and save yourself some trouble. The main thing is to have the mid HP filter be a high quality cap and have separate amps doing high power bass duties and refined performance for the mid/tweeter. So long as you already have the HP and LP matched you will not see that much improvement - if any.
If you are designing from scratch then yes, the 3rd _ 1st is what I would do first.
nt.
"The thought that life could be better is woven indelibly into our hearts and our brains" -Paul Simon
Thank you all for the information
My intent was not to highjack the thread. Many apologies.
a Marchand XM44 will do what you need. They're $1K and nice units. Marchand used to offer kits but no longer, alas.
Mark in NC
"The thought that life could be better is woven indelibly into our hearts and our brains" -Paul Simon
Used it for a decade
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