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Message: <blockquote data-quote="CAT MAN" data-source="post: 7571293" data-attributes="member: 628192"><p>if you tune to 25 hz set it to 20 subsonic.  you wont see much of a difference really except the subs will preform better. subsonic keeps the low lows out that the sub cannot reproduce. and in ported boxes its needed to help keep the sub from unloading in an enclosure. (drop below tuning) ported boxes already have a cuttoff of their own for frequinceies but the subs keep trying to play them. thats where ssf come in. hope this jumbled explination helps. im plastered</p></blockquote><p></p>

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