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<blockquote data-quote="PowerNaudio" data-source="post: 1707466" data-attributes="member: 561215"><p>like is saied port area has to be great enogh "to keep port noise to a minimum or not at all"! too much port area will allow a sub to bottom out.</p><p></p><p>the 2- 4" port diameter is usualy the smallest you want to go with a single 12" driver, some requier more than two 4" ports per driver.</p><p></p><p>he didnt specify what sub his using so thats why i stated the 2 ports at 4" in diameter as a minimum per sub.</p><p></p><p>the down:</p><p></p><p>going with a single 4" diameter port will most likely cause at a particular power level and frequency port noise.</p><p></p><p>it realy needs to be calculated knowing the t/s parameters of the sub. enclosure volume and tuning frequency.</p></blockquote><p></p>
[QUOTE="PowerNaudio, post: 1707466, member: 561215"] like is saied port area has to be great enogh "to keep port noise to a minimum or not at all"! too much port area will allow a sub to bottom out. the 2- 4" port diameter is usualy the smallest you want to go with a single 12" driver, some requier more than two 4" ports per driver. he didnt specify what sub his using so thats why i stated the 2 ports at 4" in diameter as a minimum per sub. the down: going with a single 4" diameter port will most likely cause at a particular power level and frequency port noise. it realy needs to be calculated knowing the t/s parameters of the sub. enclosure volume and tuning frequency. [/QUOTE]
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