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This I hear frequently from dabblers and laymen.
May we start an official thread on quashing these two myths? Let me start:
"15's go deeper than 12's"
I think this myth is due to the fact that sometimes more cone area sometimes does correlate to lower frequency extension. For example, the extra cone area may increase the mass, ultimately lowering its resonant frequency a little bit or alter the Q. But all things being equal, what more cone area does is increase the output ("loudness"/sound pressure). As you increase the cone area, the woofer usually becomes more efficient. Sometimes, a side effect is a higher QTS or lower Fs (or both). But the bottom line is, don't use cone size to judge how low a woofer can reach. Check for known Theile–Small parameters for the best idea of the frequency response of a subwoofer.
"10 inch subs are faster than 12's or 15's" or "10 inch subs are better for SQ"
This sums it up better than I could:
http://www.stereointegrity.com/docs/WooferSpeed.pdf
May we start an official thread on quashing these two myths? Let me start:
"15's go deeper than 12's"
I think this myth is due to the fact that sometimes more cone area sometimes does correlate to lower frequency extension. For example, the extra cone area may increase the mass, ultimately lowering its resonant frequency a little bit or alter the Q. But all things being equal, what more cone area does is increase the output ("loudness"/sound pressure). As you increase the cone area, the woofer usually becomes more efficient. Sometimes, a side effect is a higher QTS or lower Fs (or both). But the bottom line is, don't use cone size to judge how low a woofer can reach. Check for known Theile–Small parameters for the best idea of the frequency response of a subwoofer.
"10 inch subs are faster than 12's or 15's" or "10 inch subs are better for SQ"
This sums it up better than I could:
http://www.stereointegrity.com/docs/WooferSpeed.pdf