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<blockquote data-quote="Michael John" data-source="post: 39080" data-attributes="member: 830"><p>Re: Coaxial Wedge Collaboration</p><p></p><p>This morning I removed the internal port tunnels. Only ~43mm of tunnel from the front support and front plywood remained.</p><p></p><p>The impedance trace showed a dip (and 0 degrees phase) at 57 Hz - finally.... (Updated CAD drawing attached.)</p><p></p><p>However bass reflex calculators all say that the port length should be closer to 92mm.</p><p></p><p>Could there be an effective lengthening of the port on the inside caused by two sides of the port continuing on? I.e. the cabinet floor and side-wall?</p><p></p><p>Thanks,</p></blockquote><p></p>
[QUOTE="Michael John, post: 39080, member: 830"] Re: Coaxial Wedge Collaboration This morning I removed the internal port tunnels. Only ~43mm of tunnel from the front support and front plywood remained. The impedance trace showed a dip (and 0 degrees phase) at 57 Hz - finally.... (Updated CAD drawing attached.) However bass reflex calculators all say that the port length should be closer to 92mm. Could there be an effective lengthening of the port on the inside caused by two sides of the port continuing on? I.e. the cabinet floor and side-wall? Thanks, [/QUOTE]
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