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Car Audio Equipment
Subwoofers
12" vs 15"
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<blockquote data-quote="audioholic" data-source="post: 7364117" data-attributes="member: 549629"><p>Moving mass is what most common sense reliant people refer to when suggesting larger woofers are sloppier or slower. If we apply that same logic to something we tend to understand better, we can see how false that logic really is. For example, are heavier cars always slower than lighter cars? Why not? Because moving mass is not the sole determining factor in performance of a car. Its not the sole determining factor in a speaker's performance, frequency response, or its transient abilities either.</p><p></p><p>Read up on Dan Wiggin's testing/write-up about modifying the moving mass of a speaker, and what affect it caused versus modifying speaker inductance. You'll be surprised.</p><p></p><p>Larger speakers, generally speaking, actually have the potential to output LESS distortion than their smaller counterparts, given a specific output level. In other words, larger subs can get louder than smaller ones, so the larger one wont need to work as hard as the smaller one to achieve a certain output level. As excursion increases, BL drops and distortion goes up (less cone control). So if your goal is minimizing distortion, the less excursion required, the better. Hence, a larger diameter sub that doesn't have to excurt as far may very well be the better choice. Of course, many factors affects this, such as fs, freq of the material, listening levels, etc etc. Again, Im speaking in very general terms here.</p><p></p><p>Its becoming popular to suggest SQ is 'all in the box', that is definitely not true. I like to look at it like this: the box has the potential to really screw up performance if its built wrong. If its built right, it simply allows the driver to perform as it should. Obviously a well designed/built box will perform better than a bad one, but dont take that logic so far as to decide the speaker plays very little role in final performance. Again generally speaking, the box tends to be a more dominant factor in frequency response, while the driver itself tends to be the more dominant factor in distortion audibility. There are exceptions of course, notably being the bandpass styles of enclosure, but my generalization holds true *usually*.</p></blockquote><p></p>
[QUOTE="audioholic, post: 7364117, member: 549629"] Moving mass is what most common sense reliant people refer to when suggesting larger woofers are sloppier or slower. If we apply that same logic to something we tend to understand better, we can see how false that logic really is. For example, are heavier cars always slower than lighter cars? Why not? Because moving mass is not the sole determining factor in performance of a car. Its not the sole determining factor in a speaker's performance, frequency response, or its transient abilities either. Read up on Dan Wiggin's testing/write-up about modifying the moving mass of a speaker, and what affect it caused versus modifying speaker inductance. You'll be surprised. Larger speakers, generally speaking, actually have the potential to output LESS distortion than their smaller counterparts, given a specific output level. In other words, larger subs can get louder than smaller ones, so the larger one wont need to work as hard as the smaller one to achieve a certain output level. As excursion increases, BL drops and distortion goes up (less cone control). So if your goal is minimizing distortion, the less excursion required, the better. Hence, a larger diameter sub that doesn't have to excurt as far may very well be the better choice. Of course, many factors affects this, such as fs, freq of the material, listening levels, etc etc. Again, Im speaking in very general terms here. Its becoming popular to suggest SQ is 'all in the box', that is definitely not true. I like to look at it like this: the box has the potential to really screw up performance if its built wrong. If its built right, it simply allows the driver to perform as it should. Obviously a well designed/built box will perform better than a bad one, but dont take that logic so far as to decide the speaker plays very little role in final performance. Again generally speaking, the box tends to be a more dominant factor in frequency response, while the driver itself tends to be the more dominant factor in distortion audibility. There are exceptions of course, notably being the bandpass styles of enclosure, but my generalization holds true *usually*. [/QUOTE]
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Car Audio Equipment
Subwoofers
12" vs 15"
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