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<blockquote data-quote="audioholic" data-source="post: 7548868" data-attributes="member: 549629">Sensitivity specs are irrelevant because they are measured at 1khz. How many people here play their subs up to 1khz, raise your hands. //content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gifThe reason even a realistic sensitivity measurement would be useless is, hoffman&#039;s iron law tells us &quot;high sensitivity, good low end response, small enclosure... pick two&quot;. So extrapolating that logic tells us you can use an inefficient sub, with good LFE, in a small box... or you can use a high efficiency sub with good LFE in a large box. Final efficiency will level out, and other factors such as input power available, cooling ability of the speaker, and enclosure tuning versus freq of the material being played (and inductance) become the more dominant factors. Efficiency of the raw subwoofer really means very little to final performance in terms of potential maximum output.</blockquote>

[QUOTE="audioholic, post: 7548868, member: 549629"] Sensitivity specs are irrelevant because they are measured at 1khz. How many people here play their subs up to 1khz, raise your hands. [IMG]//content.invisioncic.com/y282845/emoticons/wink.gif.608e3ea05f1a9f98611af0861652f8fb.gif[/IMG] The reason even a realistic sensitivity measurement would be useless is, hoffman's iron law tells us "high sensitivity, good low end response, small enclosure... pick two". So extrapolating that logic tells us you can use an inefficient sub, with good LFE, in a small box... or you can use a high efficiency sub with good LFE in a large box. Final efficiency will level out, and other factors such as input power available, cooling ability of the speaker, and enclosure tuning versus freq of the material being played (and inductance) become the more dominant factors. Efficiency of the raw subwoofer really means very little to final performance in terms of potential maximum output. [/QUOTE]

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