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DIY & Tutorials
DIY For Audio
3 way active crossover wish list.
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<blockquote data-quote="Murray" data-source="post: 1051189" data-attributes="member: 3345"><p>Quite right. I looked as the phases at cross point and they're both 60 degrees, so that would be the crossover. I had it at the -3db its at closer to the -2dB point. A few hertz off, probably less than capacitor tolerance. The initial design used the standard formula for calculating the filter's freq. But this type of filter is defined at the -6dB point, so the frequencies on the PCB was off. The lesson, simulate, simulate until you're confident, in amplitude and phase.</p></blockquote><p></p>
[QUOTE="Murray, post: 1051189, member: 3345"] Quite right. I looked as the phases at cross point and they're both 60 degrees, so that would be the crossover. I had it at the -3db its at closer to the -2dB point. A few hertz off, probably less than capacitor tolerance. The initial design used the standard formula for calculating the filter's freq. But this type of filter is defined at the -6dB point, so the frequencies on the PCB was off. The lesson, simulate, simulate until you're confident, in amplitude and phase. [/QUOTE]
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DIY & Tutorials
DIY For Audio
3 way active crossover wish list.
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