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Old 4th August 2010, 04:20 PM   #1
juanito is offline juanito  Europe
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Default help with Omnes BB3.01 CT222 crossover

I've just got a pair of Omnes audios BB3.01 to build in small BR boxes just the same as the CT 222 satellites. At oficial web site there is a PDF with box dimensions CT222 Sat - Lautsprecher Selbstbau by blue planet acoustic
Then I've also seen at the web site where this kit is also, and it says that there are some crossover parts.
these the crossover components in this site:
- 0.39 mH, 1 mm wire
- 0.05 mH, 0.7 mm wire
- 10 uF ELCO non-etched
- 6.8 uF ELCO non-etched
- 5.6 Ohm MOX4
- 12 Ohm MOX4
I can't make strait link like omnes audio site

Does any body know if this is right? I mean, has any body done this kit and has the design for the crossover, or can reach how to do it from those components?
Many thanks for the help in advance.
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Old 4th August 2010, 04:29 PM   #2
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Crossover = German penchant for filtering everything?

community sites,, ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
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Old 5th August 2010, 11:15 AM   #3
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well the components are for two serial notch filters in a row. just send an email to the site you linked in your post. they basically are omnes audio
i'm confident they will send you the circuit layout. if not, just put together one cap, inductor and resistor (parallel) each. there should be just about four permutations or so.

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Old 5th August 2010, 01:34 PM   #4
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found the layout on

Click the image to open in full size.

have fun!
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Old 9th August 2010, 10:33 PM   #5
Henkjan is offline Henkjan  Netherlands
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the 12ohm should be a 27ohm, there was a mistake in the magazine who presented the design, and this was corrected one issue later.
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Old 10th August 2010, 10:55 PM   #6
juanito is offline juanito  Europe
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THANKS very much demon!! aout for a few days. That's very kind of you... and the rest for helping aswell.
CHEERS to all
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