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Old 7th December 2006, 09:22 AM   #1
felixx is offline felixx  Romania
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Default Active filter for bass dipole

After I read on Linkwitz pages I decided to make an active filter for my dipoles bass drivers.The design will be the same with Quasar,only back will be more open air.

http://www.dipolplus.de/thema9.htm

Filter is for them because for main driver I will go without filter.
I want to keep the same structure of filter but my concern is about 290NF - Notch filter with 2.5 H inductor to equalize 1/4 wavelength peak of 1/2 cabinet length transmission line.
I know that option is for Orion bass dipole design and I wonder if in my case that will be suitable.
What do you think?
Thx. Jussi.
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Old 7th December 2006, 12:05 PM   #2
Rudolf is offline Rudolf  Germany
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Jussi,
I have not looked into that Linkwitz filter architecture, but for a Quasar style OB you definitely donīt need any notch filter and no equalizing of any 1/4 wavelength peak.

I believe that this filter from the Phoenix woofer http://www.linkwitzlab.com/proto.htm#PW1 would be good enough:

Click the image to open in full size.

Rudolf
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