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<blockquote data-quote="spencer321" data-source="post: 6285608" data-attributes="member: 599233"><p>this is wrong, that would be under the assumption that the subwoofer actually had a piston diameter that was equal to the outside of the surround, not the inside.</p><p></p><p>the number the OP is looking for when the term "cone-area" is used is effective piston area, basically its how much of the sub is actually moving air. However, 85% of the people on here go by the method previously mentioned which is WRONG</p><p></p><p>some average values would be</p><p></p><p>8" = 195cm^2</p><p></p><p>10" = 310cm^2</p><p></p><p>12" = 480cm^2</p><p></p><p>15" = 810cm^2</p><p></p><p>so, 4-8's or 3-10's will be as close as your going to get. 3 8's would only be 72% of 1-15 where 4-8's would be 96% of 1-15, 3-10's would be 114% of 1-15</p></blockquote><p></p>
[QUOTE="spencer321, post: 6285608, member: 599233"] this is wrong, that would be under the assumption that the subwoofer actually had a piston diameter that was equal to the outside of the surround, not the inside. the number the OP is looking for when the term "cone-area" is used is effective piston area, basically its how much of the sub is actually moving air. However, 85% of the people on here go by the method previously mentioned which is WRONG some average values would be 8" = 195cm^2 10" = 310cm^2 12" = 480cm^2 15" = 810cm^2 so, 4-8's or 3-10's will be as close as your going to get. 3 8's would only be 72% of 1-15 where 4-8's would be 96% of 1-15, 3-10's would be 114% of 1-15 [/QUOTE]
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