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<blockquote data-quote="Michael John" data-source="post: 201582" data-attributes="member: 830">Hi Mark,Yes crossover filters can be done on the Mag Adjust tab. In the workflow, they are applied first in the design before the Phase and Auto tabs. (The example screenshots on the website show how the manual mag and phase tabs can be used to get the corrected response in range, before the automatic methods. This helps the automatic methods do their work.)Note that whilst low pass filters are fine, FIR can&#039;t do a perfect high pass. That is, FIR filters can&#039;t, by nature, have perfect blocking at DC, due to their finite length. In some of the plots, I&#039;ve provided a checkbox to view down to -100 dB so that you can see how much rejection the final filter is providing down low.I have plans to add another tab where the user can denote any IIR filters (analog or digital) that will be used inline with the FIR filter so that the FIR design can account for the mag and phase of these IIR filters. For example, if you know you&#039;re going to use IIR HPF for a crossover, or use a capacitor inline with a HF driver.Best,Michael</blockquote>

[QUOTE="Michael John, post: 201582, member: 830"] Hi Mark, Yes crossover filters can be done on the Mag Adjust tab. In the workflow, they are applied first in the design before the Phase and Auto tabs. (The example screenshots on the website show how the manual mag and phase tabs can be used to get the corrected response in range, before the automatic methods. This helps the automatic methods do their work.) Note that whilst low pass filters are fine, FIR can't do a perfect high pass. That is, FIR filters can't, by nature, have perfect blocking at DC, due to their finite length. In some of the plots, I've provided a checkbox to view down to -100 dB so that you can see how much rejection the final filter is providing down low. I have plans to add another tab where the user can denote any IIR filters (analog or digital) that will be used inline with the FIR filter so that the FIR design can account for the mag and phase of these IIR filters. For example, if you know you're going to use IIR HPF for a crossover, or use a capacitor inline with a HF driver. Best, Michael [/QUOTE]

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