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<blockquote data-quote="squeak9798" data-source="post: 4335819" data-attributes="member: 555320"><p>Fi Q; <a href="https://ssl.perfora.net/www.ficaraudio.com/sess/utn;jsessionid=15480b8b02a45e8/shopdata/0020_Q/product_overview.shopscript" target="_blank">https://ssl.perfora.net/www.ficaraudio.com/sess/utn;jsessionid=15480b8b02a45e8/shopdata/0020_Q/product_overview.shopscript</a></p><p></p><p>12": Sd = 481cm^2</p><p></p><p>481*3 = 1443cm^2 total cone area for the three 12's</p><p></p><p>18": Sd = 1210cm^2</p><p></p><p>1443 - 1210 = 233cm^2 more cone area</p><p></p><p>Since they each have 27mm Xmax, the three 12's have a Vd of 3.9L, the one 18 a Vd of 3.27L</p><p></p><p>20*log(3.9/3.27) = 1.53db</p><p></p><p>So the three 12's are capable of 1.5db more output</p></blockquote><p></p>
[QUOTE="squeak9798, post: 4335819, member: 555320"] Fi Q; [URL="https://ssl.perfora.net/www.ficaraudio.com/sess/utn;jsessionid=15480b8b02a45e8/shopdata/0020_Q/product_overview.shopscript"]https://ssl.perfora.net/www.ficaraudio.com/sess/utn;jsessionid=15480b8b02a45e8/shopdata/0020_Q/product_overview.shopscript[/URL] 12": Sd = 481cm^2 481*3 = 1443cm^2 total cone area for the three 12's 18": Sd = 1210cm^2 1443 - 1210 = 233cm^2 more cone area Since they each have 27mm Xmax, the three 12's have a Vd of 3.9L, the one 18 a Vd of 3.27L 20*log(3.9/3.27) = 1.53db So the three 12's are capable of 1.5db more output [/QUOTE]
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