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Message: <blockquote data-quote="germandark" data-source="post: 5566541" data-attributes="member: 602084">here is mock up #3  it is very much like supergumby's.  I followed his advice on taking the subs "out of the port."  this gave me less air space but the subs will still be getting enough and each chamber is tuned to 32 hertz with 79in^ of port area.  it is more a true clam shell now.  I really like this design.again it will all be braced with threaded rod and fiberglass.<img src="http://i11.photobucket.com/albums/a161/germandark/clamshell3.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" />questions &amp; comments.edit: after doing some other measurements, tuning maybe actually be around 30 hz.  anyways its very low 30's</blockquote>

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