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Old 29th December 2009, 10:29 PM   #1
badman is offline badman  United States
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Default Horn crossovers are hard- this can help

Find attached a handy CD EQ filter calculator. It's rough but does the job. If you use nominal impedance... be sure to notch out any spikes.
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Old 29th December 2009, 11:42 PM   #2
col is offline col  Australia
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can you give more details on what it does and how to use it? At the moment I have opened it up in openoffice.org but thats about it.

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Old 30th December 2009, 06:26 AM   #3
badman is offline badman  United States
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It's pretty app-specific. You use a parallel cap/resistor combo to roll off the midband relative to the highs in a constant-directivity horn, which tends to have a "lump" response centered around 1-2k. So, you need to roll off the lump without throwing away the bottom end of the passband. I'll try to get a better version put together with 2nd order filter support (did some testing of this method tonight) and expanded displays (summed impedance, etc) later on this week.
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Old 31st December 2009, 03:10 AM   #4
SunRa is offline SunRa  Romania
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This can prove to be very useful, thank you!
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