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DIY & Tutorials
DIY, Audio & Video Tutorials
A rough guide to crossover design
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<blockquote data-quote="JimGore" data-source="post: 470108" data-attributes="member: 3"><p>You are correct, but I would not go as far as saying that the phase is only important for an octave either way of the crossover point - as you have stated it really does come down to the slopes of the filter and how that interacts with the driver(s) in question. </p><p></p><p>2nd order electric will most likely not give you 2nd order acoustic slopes, so there are a number of factors to consider. Ultimately the filter phase shift combined with the driver's natural phase and transfer function at the crossover point will determine the acoustic slope of the driver rolloff and have an influence on the final phase response at that point. </p><p></p><p>Things get even more interesting when notch filters, etc are needed to suppress breakup nodes, etc near the crossover point, such as you will find with extremely stiff cone material like Kevlar, Carbon Fibre, Aluminium, Ceramics, and even some paper cones.</p><p></p><p>Cheers,</p><p>Ian.</p></blockquote><p></p>
[QUOTE="JimGore, post: 470108, member: 3"] You are correct, but I would not go as far as saying that the phase is only important for an octave either way of the crossover point - as you have stated it really does come down to the slopes of the filter and how that interacts with the driver(s) in question. 2nd order electric will most likely not give you 2nd order acoustic slopes, so there are a number of factors to consider. Ultimately the filter phase shift combined with the driver's natural phase and transfer function at the crossover point will determine the acoustic slope of the driver rolloff and have an influence on the final phase response at that point. Things get even more interesting when notch filters, etc are needed to suppress breakup nodes, etc near the crossover point, such as you will find with extremely stiff cone material like Kevlar, Carbon Fibre, Aluminium, Ceramics, and even some paper cones. Cheers, Ian. [/QUOTE]
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DIY & Tutorials
DIY, Audio & Video Tutorials
A rough guide to crossover design
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