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<blockquote data-quote="galacticmonkey" data-source="post: 5679020" data-attributes="member: 570857">You will always tune a bandpass higher. Mine plays lows great and right now its tuned to 46-47hz. A bandpass tuned to 40hz or below wouldnt do very well on music.Porting a bandpass into the cabin works GREAT. If I owned a trunk car, a bandpass is the only way I would go.The big sealed/small ported bandpass boxes wont handle as much power, thermally or mechanically. The super tiny sealed boxes in some of the SPL cars let the speaker handle a ton of power. Alot of Extreme class cars will do 1 18 in like 1.5 cubes sealed, then like 20 cubes ported. That raises the peak very high and along with the shape and build of the cabin takes their whole passband of playable notes and condenses it into only a couple hz. This gives them rediculous amounts of sound at one frequency, but making the box not play anything else.Read here for all thee types of boxes.<a href="http://www.the12volt.com/caraudio/boxes.asp" target="_blank">http://www.the12volt.com/caraudio/boxes.asp</a>This is a series double tuned bandpass.<img src="http://www.the12volt.com/12voltimages/quasisixbandpass.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" />This is a paralles double tuned bandpass.<img src="http://www.the12volt.com/12voltimages/dualrefbpass.gif" alt="" class="fr-fic fr-dii fr-draggable " style="" /></blockquote>

[QUOTE="galacticmonkey, post: 5679020, member: 570857"] You will always tune a bandpass higher. Mine plays lows great and right now its tuned to 46-47hz. A bandpass tuned to 40hz or below wouldnt do very well on music. Porting a bandpass into the cabin works GREAT. If I owned a trunk car, a bandpass is the only way I would go. The big sealed/small ported bandpass boxes wont handle as much power, thermally or mechanically. The super tiny sealed boxes in some of the SPL cars let the speaker handle a ton of power. Alot of Extreme class cars will do 1 18 in like 1.5 cubes sealed, then like 20 cubes ported. That raises the peak very high and along with the shape and build of the cabin takes their whole passband of playable notes and condenses it into only a couple hz. This gives them rediculous amounts of sound at one frequency, but making the box not play anything else. Read here for all thee types of boxes. [URL="http://www.the12volt.com/caraudio/boxes.asp"]http://www.the12volt.com/caraudio/boxes.asp[/URL] This is a series double tuned bandpass. [IMG]http://www.the12volt.com/12voltimages/quasisixbandpass.gif[/IMG] This is a paralles double tuned bandpass. [IMG]http://www.the12volt.com/12voltimages/dualrefbpass.gif[/IMG] [/QUOTE]

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