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<blockquote data-quote="9seconlives" data-source="post: 5246504" data-attributes="member: 594056">Understood BUT why then by making the port shorter or longer does it change the frequency to which the box is tuned? just curious and not trying to pick a fight with a senior member but it &quot;almost&quot; made sense to me when i heard it the first time. i understand that the size of the box and port are a major factor but i&#039;m use to building by DD&#039;s specs most of the time and if i have a 2&quot;-3&quot;x16&quot;port tuned at 40htz then how come if i make it an inch or 2 longer ir will drop it down to like 36 or so? cause you&#039;re tuning the box not the sub....maybe it&#039;s too late and my meds are kicking my a$$ but than you guys for clearing that up for me. //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gifhere&#039;s what i mean though...doesn&#039;t matter if you have a 1510 or a 3512 the area of the port is different but the length and tuning frequency is the same..i also understand that thes #&#039;s are not set in stone..<a href="http://www.ddaudio.com/dd/caraudio/enclosureInfo/boxSize_hiEff.asp" target="_blank">http://www.ddaudio.com/dd/caraudio/enclosureInfo/boxSize_hiEff.asp</a>SORRY TO JUMP OFF TOPIC!!//content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif</blockquote>

[QUOTE="9seconlives, post: 5246504, member: 594056"] Understood BUT why then by making the port shorter or longer does it change the frequency to which the box is tuned? just curious and not trying to pick a fight with a senior member but it "almost" made sense to me when i heard it the first time. i understand that the size of the box and port are a major factor but i'm use to building by DD's specs most of the time and if i have a 2"-3"x16"port tuned at 40htz then how come if i make it an inch or 2 longer ir will drop it down to like 36 or so? cause you're tuning the box not the sub....maybe it's too late and my meds are kicking my a$$ but than you guys for clearing that up for me. [IMG]//content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif[/IMG] here's what i mean though...doesn't matter if you have a 1510 or a 3512 the area of the port is different but the length and tuning frequency is the same..i also understand that thes #'s are not set in stone.. [URL="http://www.ddaudio.com/dd/caraudio/enclosureInfo/boxSize_hiEff.asp"]http://www.ddaudio.com/dd/caraudio/enclosureInfo/boxSize_hiEff.asp[/URL] SORRY TO JUMP OFF TOPIC!![IMG]//content.invisioncic.com/y282845/emoticons/crazy.gif.c13912c32de98515d3142759a824dae7.gif[/IMG] [/QUOTE]

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