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<blockquote data-quote="1aespinoza" data-source="post: 8710600" data-attributes="member: 654802"><p>We are all noobs. I just recently learned that audio engineers disagree as to speaker efficiency proportional to voice coil size. Anyways, what I have read (many moons ago, so no source) is that ports are holes designed to control the airflow that a cone moves, therefore controlling that cone resulting in a resonant frequency. The same theory is used in passive radiators, a weight is used on the radiators to control the movement of the speaker, also resulting in a resonant frequency(tune). Now this is something I read so I claim no knowledge of the dynamics of these studies. What I did deduce all by myself (pops collar) is that port surface area x length is what matters and not shape. I may be wrong from here till kingdom come, but twice it has worked for me. On a pair of old 15" Punch and a 12" Elemental Designs eD12a (I love this sub).</p></blockquote><p></p>
[QUOTE="1aespinoza, post: 8710600, member: 654802"] We are all noobs. I just recently learned that audio engineers disagree as to speaker efficiency proportional to voice coil size. Anyways, what I have read (many moons ago, so no source) is that ports are holes designed to control the airflow that a cone moves, therefore controlling that cone resulting in a resonant frequency. The same theory is used in passive radiators, a weight is used on the radiators to control the movement of the speaker, also resulting in a resonant frequency(tune). Now this is something I read so I claim no knowledge of the dynamics of these studies. What I did deduce all by myself (pops collar) is that port surface area x length is what matters and not shape. I may be wrong from here till kingdom come, but twice it has worked for me. On a pair of old 15" Punch and a 12" Elemental Designs eD12a (I love this sub). [/QUOTE]
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