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Old 15th December 2014, 10:58 AM   #1
diyAudio Member
Join Date: Sep 2007
Default 4th order crossover ???

Is this 24db/octave at 380hz
Just curious
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thanks John
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Old 15th December 2014, 11:02 AM   #2
diyAudio Member
Join Date: Sep 2007
Inductors are
thanks John
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Old 15th December 2014, 11:22 AM   #3
Sonce is online now Sonce  Macedonia
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Join Date: Jan 2014
Location: Macedonia
Originally Posted by mclsound View Post
Is this 24db/octave at 380hz
It might be, if it is low-pass filter only.
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Old 15th December 2014, 02:03 PM   #4
diyAudio Member
Join Date: Feb 2009
Is this 24db/octave at 380hz
It is impossible to say because coils/caps values are dependent not only on the crossover frequency but also on the impedance of the driver (which is not constant). Moreover in speaker crossover what is important is the ***acoustic*** slope and not the electrical one. The acoustic slope depends also on the frequency response of the driver. If you search for some well documented projects you'll find that often it is possible to achieve a 4th order acoustic slope with only 2 elements.


PS Not related for your question, but based on the photo the coil placement is not ideal. See: Placement of coils in crossover networks
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Old 15th December 2014, 02:08 PM   #5
AndrewT is offline AndrewT  Scotland
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Join Date: Jul 2004
Location: Scottish Borders
reverse engineer the crossover and post the schematic.
regards Andrew T.
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