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Car Audio Equipment
Speakers
Aiming and beaming
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<blockquote data-quote="trumpet" data-source="post: 8573107" data-attributes="member: 628688"><p><img src="https://www.rubyservsales.com/wp-content/uploads/2017/03/speaker-beaming-chart-with-full-color.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>If we reference the chart, pay attention to the columns with the colors shaded from green to yellow to red. Above that are polar response diagrams. Basically we want to stick to the columns associated with a polar response diagram in which the blue line is more circular. Those are the green squares.</p><p></p><p><strong>Practical Application of the Data </strong></p><p></p><p>So we want to keep the speaker's response as wide as possible. You may or may not be able to match the numbers in the green squares. What you're looking to do is select a Low Pass Filter crossover frequency.</p><p></p><p>For your 5 1/4" mids, start at "5". We're matching up with 3/4" dome tweeters, and that means the 5 1/4" mids should play up through the low end of the tweeters. For this example let's say the 3/4" tweeters should be crossed at 4.5 kHz in order to prevent damage at high volume. This puts the 5 1/4" mids well into the range of narrowed response(aka beaming).</p><p></p><p><strong>What Does This Mean for Me?</strong></p><p></p><p>I'm keeping this as short as possible, but hopefully you've gotten the idea of what to do with aiming the 8s and tweeters. The only speakers that need to be aimed on axis are the 5 1/4" mids.</p></blockquote><p></p>
[QUOTE="trumpet, post: 8573107, member: 628688"] [IMG]https://www.rubyservsales.com/wp-content/uploads/2017/03/speaker-beaming-chart-with-full-color.jpg[/IMG] If we reference the chart, pay attention to the columns with the colors shaded from green to yellow to red. Above that are polar response diagrams. Basically we want to stick to the columns associated with a polar response diagram in which the blue line is more circular. Those are the green squares. [B]Practical Application of the Data [/B] So we want to keep the speaker's response as wide as possible. You may or may not be able to match the numbers in the green squares. What you're looking to do is select a Low Pass Filter crossover frequency. For your 5 1/4" mids, start at "5". We're matching up with 3/4" dome tweeters, and that means the 5 1/4" mids should play up through the low end of the tweeters. For this example let's say the 3/4" tweeters should be crossed at 4.5 kHz in order to prevent damage at high volume. This puts the 5 1/4" mids well into the range of narrowed response(aka beaming). [B]What Does This Mean for Me?[/B] I'm keeping this as short as possible, but hopefully you've gotten the idea of what to do with aiming the 8s and tweeters. The only speakers that need to be aimed on axis are the 5 1/4" mids. [/QUOTE]
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Aiming and beaming
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