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Car Audio Discussion
General Car Audio
speaker design recommendation
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<blockquote data-quote="keep_hope_alive" data-source="post: 7988644" data-attributes="member: 576029"><p>The challenge with using larger woofer pairs is the inevitable comb filtering that you get at upper frequencies. you'll have to do some experimenting to see if you like running both identically, or if you want to add a series inductor with the lower woofer. JBL-Harmon (and many others) have done this for decades and have plenty of reference material on the subject available for free download. The key is to just keep the lower woofer LPF first-order to avoid phase shift between the woofers.</p><p></p><p>designing a flexible crossover will make this process easier, you could even install a switch that engages this feature for quick A/B comparisons.</p><p></p><p>when building the enclosure, keep in mind that one goal is to prevent sound from the rear of the cone bouncing around inside the enclosure from coming back through the cone later. good enclosure designs address this.</p></blockquote><p></p>
[QUOTE="keep_hope_alive, post: 7988644, member: 576029"] The challenge with using larger woofer pairs is the inevitable comb filtering that you get at upper frequencies. you'll have to do some experimenting to see if you like running both identically, or if you want to add a series inductor with the lower woofer. JBL-Harmon (and many others) have done this for decades and have plenty of reference material on the subject available for free download. The key is to just keep the lower woofer LPF first-order to avoid phase shift between the woofers. designing a flexible crossover will make this process easier, you could even install a switch that engages this feature for quick A/B comparisons. when building the enclosure, keep in mind that one goal is to prevent sound from the rear of the cone bouncing around inside the enclosure from coming back through the cone later. good enclosure designs address this. [/QUOTE]
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speaker design recommendation
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