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<blockquote data-quote="Immacomputer" data-source="post: 5033794" data-attributes="member: 570419">Loud is all about effectively coupling a speaker to an enclosure and coupling that system to a vehicle&#039;s environment. Some speakers are naturally able to be coupled well with certain enclosure types. Many SPL subs work very well with ported enclosures and can help drive a system into resonance with great efficiency. If you have coupled the sub and enclosure well, coupling to the interior is what makes or breaks getting loud. That&#039;s why sometimes nice equipment doesn&#039;t do well and other times it does and vice versa.Also, SPL subs are able to handle loads of power without going into power compression which means more current which leads to a stronger EMF which is more acceleration which will directly be related to output.Oh, and Xmax is not a figure to really focus on when worrying about how loud something will be. It&#039;s not good to look at one or two parameters and leave everything else aside. All factors need to come into play (all T/S parameters, enclosure, and environment) to get an idea of how well a system will work. Xmax is also only a measurement of the linear throw of the driver. Nonlinear does not mean the sub will be moving side to side; nonlinear is based around the flux density of the magnetic field of the motor. When the EMF changes over distance of the coil travel too much, the driver is operating in non linear region and many parameters of the sub will shift as it moves in an out (great way to get distortion).</blockquote>

[QUOTE="Immacomputer, post: 5033794, member: 570419"] Loud is all about effectively coupling a speaker to an enclosure and coupling that system to a vehicle's environment. Some speakers are naturally able to be coupled well with certain enclosure types. Many SPL subs work very well with ported enclosures and can help drive a system into resonance with great efficiency. If you have coupled the sub and enclosure well, coupling to the interior is what makes or breaks getting loud. That's why sometimes nice equipment doesn't do well and other times it does and vice versa. Also, SPL subs are able to handle loads of power without going into power compression which means more current which leads to a stronger EMF which is more acceleration which will directly be related to output. Oh, and Xmax is not a figure to really focus on when worrying about how loud something will be. It's not good to look at one or two parameters and leave everything else aside. All factors need to come into play (all T/S parameters, enclosure, and environment) to get an idea of how well a system will work. Xmax is also only a measurement of the linear throw of the driver. Nonlinear does not mean the sub will be moving side to side; nonlinear is based around the flux density of the magnetic field of the motor. When the EMF changes over distance of the coil travel too much, the driver is operating in non linear region and many parameters of the sub will shift as it moves in an out (great way to get distortion). [/QUOTE]

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