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General Car Audio
Recommend sub size based on application
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<blockquote data-quote="Chriszle" data-source="post: 7887771" data-attributes="member: 629944"><p>One of the biggest myths about woofers is that 8's and 10's are "tighter" and "cleaner" than 15's or 18's. Nothing is further from the truth. What tends to happen is that the smaller drivers have lower Q's because manufactures tend to put large cones on smaller motors to increase SPL and sensitivity but not BL product. Well unless the motor can compensate for the extra mass it has to push, then the Qts will not be the same as the smaller drivers and ultimately the driver may not be suited for the same kinds of alignments and could ring too much and compromise the perceived sound quality. Having said that, high Qts drivers are not any less "tight" or "musical" than well dampened drivers, it's just they require larger boxes and less internal pressure to prevent ringing. Ultimately there becomes a point where a driver really should be used in an infinite baffle where its actual Qts and Fs becomes the system Qtc and Fc. As enclosure volume decreases, Qtc increases and it will take a driver with a low Qts to make for an average Q system. So in conclusion, the only reason to use a smaller bass driver is for space, weight and potentially power considerations, but likewise, it is inappropriate to try and fit a larger driver into a space smaller than it is ideal for.</p></blockquote><p></p>
[QUOTE="Chriszle, post: 7887771, member: 629944"] One of the biggest myths about woofers is that 8's and 10's are "tighter" and "cleaner" than 15's or 18's. Nothing is further from the truth. What tends to happen is that the smaller drivers have lower Q's because manufactures tend to put large cones on smaller motors to increase SPL and sensitivity but not BL product. Well unless the motor can compensate for the extra mass it has to push, then the Qts will not be the same as the smaller drivers and ultimately the driver may not be suited for the same kinds of alignments and could ring too much and compromise the perceived sound quality. Having said that, high Qts drivers are not any less "tight" or "musical" than well dampened drivers, it's just they require larger boxes and less internal pressure to prevent ringing. Ultimately there becomes a point where a driver really should be used in an infinite baffle where its actual Qts and Fs becomes the system Qtc and Fc. As enclosure volume decreases, Qtc increases and it will take a driver with a low Qts to make for an average Q system. So in conclusion, the only reason to use a smaller bass driver is for space, weight and potentially power considerations, but likewise, it is inappropriate to try and fit a larger driver into a space smaller than it is ideal for. [/QUOTE]
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