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Low Earth Orbit
DIY Audio
New B&C dual 15" design
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<blockquote data-quote="Rob Timmerman" data-source="post: 215581" data-attributes="member: 172"><p>Compared to a pair of 21s in an isobaric configuration, the 21+ 2x18 configuration looks like it results in a shallower box with less of a need for internal bracing due to the configuration of the 2x18 baffle and the ports. There's also a possibility that the pair of 18s requires a smaller box than a single 21 would, further reducing the cabinet size (the cabinet volume is calculated only for the rear speaker(s) in an isobaric configuration), but I haven't checked that.</p></blockquote><p></p>
[QUOTE="Rob Timmerman, post: 215581, member: 172"] Compared to a pair of 21s in an isobaric configuration, the 21+ 2x18 configuration looks like it results in a shallower box with less of a need for internal bracing due to the configuration of the 2x18 baffle and the ports. There's also a possibility that the pair of 18s requires a smaller box than a single 21 would, further reducing the cabinet size (the cabinet volume is calculated only for the rear speaker(s) in an isobaric configuration), but I haven't checked that. [/QUOTE]
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New B&C dual 15" design
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