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Rumors on Sub size/ end them here
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<blockquote data-quote="audioholic" data-source="post: 2928828" data-attributes="member: 549629"><p>Wrong. Im tired of explaining this fallacy. For the love of god, just read this: <a href="http://www.adireaudio.com/Files/WooferSpeed.pdf" target="_blank">http://www.adireaudio.com/Files/WooferSpeed.pdf</a></p><p></p><p>Wrong again. Most models of subs use the same motor, hence the same 'throw' (excursion) from the 10" version to the 18" version. Kinda shoots a big hole right through the middle of your theory, huh? //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif</p><p>Larger subs do tends to have more low-end output than smaller subs, and it is from more air displaced, but its not from more excursion, its from more cone area while having the same excursion (as a smaller diameter version).</p><p></p><p>Nope. Enclosure is MUCH more important. When I attended installer institute back in the early 90's, we built a 'subwoofer' enclosure for a 3" driver (TL iirc), it extended amazingly low. This was to teach us the importance of the enclosure. That's not to say the speaker isn't important to, but you place way too much empahsis on it over the enclosure for actual frequency response characteristics.</p><p>Just when I was gonna agree with you, you had to throw in the generalization about 12" diameter subwoofers. Again, you place way too much emphasis on the diameter of the radiating surface in the subwoofer system.</p><p>-------------------------------------------------------------</p><p></p><p>Let me break this down for you. The lower the frequency of the note being played, the more air needed to reproduce it at a given output level (loudness). So obviously the sub that moves less air will not be able to have as much authority at lower freqs as the one that moves more air. But, pair up two 8" subs and they will hit (basically) just as low as a single 10. An array of 8's in a wall would have the ability to extend very low with alot of authority, because together they would move alot of air. Anything else said about the difference in cone diamateres (including weight/inertia arguements) is just hot air, BS, or over-generalizations.</p><p>For a given frequency, cone speed MUST be the same. Think about it, a frequency is merely cycles per second. So for a speaker to reproduce a 50hz note, it moves back and forth 50 times per second. If its slower than that, its no longer even playing a 50hz note.</p><p>One of the basic flaws in the theory that 'larger cones move slower due to weight' is, moving slower would not equate to a 'sloppy' response, it would literally alter the music, the woofer would be 'off key'. This obviously does not happen, yet another way to show the woofer speed theory holds no water.</p><p></p><p>If you have any questions on the Adire woofer speed paper (I linked to it above btw), ask away. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif</p></blockquote><p></p>
[QUOTE="audioholic, post: 2928828, member: 549629"] Wrong. Im tired of explaining this fallacy. For the love of god, just read this: [URL="http://www.adireaudio.com/Files/WooferSpeed.pdf"]http://www.adireaudio.com/Files/WooferSpeed.pdf[/URL] Wrong again. Most models of subs use the same motor, hence the same 'throw' (excursion) from the 10" version to the 18" version. Kinda shoots a big hole right through the middle of your theory, huh? [IMG]//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif[/IMG] Larger subs do tends to have more low-end output than smaller subs, and it is from more air displaced, but its not from more excursion, its from more cone area while having the same excursion (as a smaller diameter version). Nope. Enclosure is MUCH more important. When I attended installer institute back in the early 90's, we built a 'subwoofer' enclosure for a 3" driver (TL iirc), it extended amazingly low. This was to teach us the importance of the enclosure. That's not to say the speaker isn't important to, but you place way too much empahsis on it over the enclosure for actual frequency response characteristics. Just when I was gonna agree with you, you had to throw in the generalization about 12" diameter subwoofers. Again, you place way too much emphasis on the diameter of the radiating surface in the subwoofer system. ------------------------------------------------------------- Let me break this down for you. The lower the frequency of the note being played, the more air needed to reproduce it at a given output level (loudness). So obviously the sub that moves less air will not be able to have as much authority at lower freqs as the one that moves more air. But, pair up two 8" subs and they will hit (basically) just as low as a single 10. An array of 8's in a wall would have the ability to extend very low with alot of authority, because together they would move alot of air. Anything else said about the difference in cone diamateres (including weight/inertia arguements) is just hot air, BS, or over-generalizations. For a given frequency, cone speed MUST be the same. Think about it, a frequency is merely cycles per second. So for a speaker to reproduce a 50hz note, it moves back and forth 50 times per second. If its slower than that, its no longer even playing a 50hz note. One of the basic flaws in the theory that 'larger cones move slower due to weight' is, moving slower would not equate to a 'sloppy' response, it would literally alter the music, the woofer would be 'off key'. This obviously does not happen, yet another way to show the woofer speed theory holds no water. If you have any questions on the Adire woofer speed paper (I linked to it above btw), ask away. [IMG]//content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif[/IMG] [/QUOTE]
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