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<blockquote data-quote="Jeffdachef" data-source="post: 8532337" data-attributes="member: 650438"><p>not always I sealed up my ports for my 4 18s for a sealed setup just for kicks and my 17hz strength disappeared. Didnt even play down to 22hz audibly. The overall efficiency you gain with ported more then makes up for the roll off so even in the end, ported will still get better low frequency extension. You can say oh it reaches the note with sealed but whats the use of it not being audible worth a d*mn.</p><p></p><p></p><p>Might have been better off with a dayton HO 12 in a ported or a dayton ho 15 in a sealed. Thats the perfect airspace for them. you need to buy woofers based on airspace rather than what you think might get loud or what looks like a quality sub. You bought an ssa sub that thrives on big ported boxes and you are trying to cram it in a tiny space which means going sealed which means giving up a lot of output. Not that the icon doesnt do well in sealed but IT DOES MUCH BETTER in PORTED.</p><p></p><p>You will get much better results from subs that thrive in small airspace ported. AKA the daytons, DC audio, sundown and a few others.</p></blockquote><p></p>
[QUOTE="Jeffdachef, post: 8532337, member: 650438"] not always I sealed up my ports for my 4 18s for a sealed setup just for kicks and my 17hz strength disappeared. Didnt even play down to 22hz audibly. The overall efficiency you gain with ported more then makes up for the roll off so even in the end, ported will still get better low frequency extension. You can say oh it reaches the note with sealed but whats the use of it not being audible worth a d*mn. Might have been better off with a dayton HO 12 in a ported or a dayton ho 15 in a sealed. Thats the perfect airspace for them. you need to buy woofers based on airspace rather than what you think might get loud or what looks like a quality sub. You bought an ssa sub that thrives on big ported boxes and you are trying to cram it in a tiny space which means going sealed which means giving up a lot of output. Not that the icon doesnt do well in sealed but IT DOES MUCH BETTER in PORTED. You will get much better results from subs that thrive in small airspace ported. AKA the daytons, DC audio, sundown and a few others. [/QUOTE]
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