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<blockquote data-quote="entropie" data-source="post: 3974791" data-attributes="member: 572907">yep.&nbsp; basically the way i figure it is the trunk is essentially the second chamber of the enclosure.&nbsp; based on reading this <a href="http://www.ozaudio.com/docs/Bandpass_Enclosures.pdf" target="_blank">pdf file</a>, &quot;as the ported chamber increases in internal volume the system becomes more efficient.&quot;&nbsp; however, as that happens &quot;the bandwidth becomes thinner.&quot;with my car, a &#039;95 bmw m3, the trunk is very tight and i believe my alumapro bp-10 suffers from the &quot;one note&quot; bass mentioned in the pdf file.&nbsp;&nbsp; now, i understand to gain the exact appropriate port length would be impossible due to the fact the trunk is not sealed blah, blah... but my question is:&nbsp; does anyone believe the use of ports hanging from the rear deck (possibly tappered ones) would improve the range of bass.fyi, with the seats down, the bass notes take on a new persona.&nbsp; with the seats up the bass gets greatly silenced.</blockquote>

[QUOTE="entropie, post: 3974791, member: 572907"] yep. basically the way i figure it is the trunk is essentially the second chamber of the enclosure. based on reading this [URL="http://www.ozaudio.com/docs/Bandpass_Enclosures.pdf"]pdf file[/URL], "as the ported chamber increases in internal volume the system becomes more efficient." however, as that happens "the bandwidth becomes thinner." with my car, a '95 bmw m3, the trunk is very tight and i believe my alumapro bp-10 suffers from the "one note" bass mentioned in the pdf file. now, i understand to gain the exact appropriate port length would be impossible due to the fact the trunk is [B]not[/B] sealed blah, blah... but my question is: does anyone believe the use of ports hanging from the rear deck (possibly tappered ones) would improve the range of bass. fyi, with the seats down, the bass notes take on a new persona. with the seats up the bass gets greatly silenced. [/QUOTE]

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