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<blockquote data-quote="T3mpest" data-source="post: 2492106" data-attributes="member: 560148">First off cars do have more reflections.&nbsp; Last I checked, most listening rooms are filled with soft materials to absorb sound waves, in addition all drivers are placed on axis.&nbsp; A cars interior is hard plastic and glass, with most drivers placed off axis.Secondly, I&#039;ll adress the subs from the back issue.&nbsp; Do you understand how ears localize sound?&nbsp; I don&#039;t think you do, so I&#039;ll go over it for you.&nbsp; Humans determine position aurally by phase/amplitude difference in both ears...if the wavelength is too long to fit in the car then we can&#039;t determine where the sound is coming from because the air will compress/rarify equally on both sides of our head, which means that both ears will hear the exact same thing...this happens usually below about 100Hz in a closed mid-sized sedan.&nbsp; This is why you can&#039;t &quot;cornerload&quot; in a car, you already have cabin gain in subbass frequencies, and it&#039;s all your getting.&nbsp; In a larger vehicle you&#039;ll get a higher cutoff frequency before the sounds localize.&nbsp; In a car, getting the correct amount of airspace upfront for a sub and stopping things from rattling, again, localizing the sound, is hard.&nbsp; Therefore using the way the human ears detect sound to our advantage is paramount.&nbsp; It&#039;s the same reason active setups can employ midbasses in the doors, midranges in the kicks and only have the tweets up high, and yet have still have ALL frequencies appear to come from eye level, despite only having frequencies from 1500hz and up or so even originating above your knees.&nbsp; Learning what works and what doesn&#039;t is the trick, and due to how humans hear sound, no amount of attenuation is going to help a full range rear fill succeed.&nbsp; By the time you do enough prcocessing to make it acceptable, you&#039;ve gained nothing from doing it, especially the &quot;echo&quot; effect people like to think it adds.&nbsp; (cancellations and echos arent&#039; same thing guys, sorry)</blockquote>

[QUOTE="T3mpest, post: 2492106, member: 560148"] First off cars do have more reflections. Last I checked, most listening rooms are filled with soft materials to absorb sound waves, in addition all drivers are placed on axis. A cars interior is hard plastic and glass, with most drivers placed off axis. Secondly, I'll adress the subs from the back issue. Do you understand how ears localize sound? I don't think you do, so I'll go over it for you. Humans determine position aurally by phase/amplitude difference in both ears...if the wavelength is too long to fit in the car then we can't determine where the sound is coming from because the air will compress/rarify equally on both sides of our head, which means that both ears will hear the exact same thing...this happens usually below about 100Hz in a closed mid-sized sedan. This is why you can't "cornerload" in a car, you already have cabin gain in subbass frequencies, and it's all your getting. In a larger vehicle you'll get a higher cutoff frequency before the sounds localize. In a car, getting the correct amount of airspace upfront for a sub and stopping things from rattling, again, localizing the sound, is hard. Therefore using the way the human ears detect sound to our advantage is paramount. It's the same reason active setups can employ midbasses in the doors, midranges in the kicks and only have the tweets up high, and yet have still have ALL frequencies appear to come from eye level, despite only having frequencies from 1500hz and up or so even originating above your knees. Learning what works and what doesn't is the trick, and due to how humans hear sound, no amount of attenuation is going to help a full range rear fill succeed. By the time you do enough prcocessing to make it acceptable, you've gained nothing from doing it, especially the "echo" effect people like to think it adds. (cancellations and echos arent' same thing guys, sorry) [/QUOTE]

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