Active Crossover Designer version 2 released - diyAudio
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Old 12th November 2012, 09:07 PM   #1
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Join Date: Mar 2007
Location: California
Default Active Crossover Designer version 2 released

I'm happy to announce that the Active Crossover Designer has reached version 2.0. This new release has some under-the-hood upgrades, the tutorial has been redone to better illustrate how to tweak the filter tables, and there is a new extension that makes FRD file importing and exporting a breeze.

With release 2, the tools now work in Open Office Calc (version 3.3 or later).

For those who are not familiar with ACD, here is a summary:
  • ACD is a measurement based, active crossover design program
  • Crossovers are described as sets of filter blocks.
  • Any filter type up to second order biquadratic can be used, including the Linkwitz Transform and first and second order shelving filters
  • A frequency shaping filter or crossover can be designed for up to a 4-way loudspeaker
  • The software can be expanded to model line arrays with custom programming (please contact author for more info)
  • All filter parameters can be exported to the MiniDSP crossovers (with advanced biquad capability) so that the crossover can be implemented immediately

For more information, see the ACD web page:
the Active Crossover Designer web page

-Charlie
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Old 12th November 2012, 09:08 PM   #2
diyAudio Member
 
Join Date: Mar 2007
Location: California
Default some ACD screen shots

Some ACD screen shots are shown below:

The new interface for the driver response spreadsheet:
Click the image to open in full size.


The tutorial shows how to turn these raw driver responses (shown below) into a nice flat frequency response (see two below):
Click the image to open in full size.

After the tutorial we have this response:
Click the image to open in full size.


Let the fun begin!

-Charlie
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