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Audio and Video Talk
General Discussion
Audio 101 - Can your speaker be too big for your amp???
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<blockquote data-quote="Vaughan" data-source="post: 60533" data-attributes="member: 693"><p>I'm no transducer engineer but I have learned a few things over the years from a few who work in the field.</p><p></p><p></p><p></p><p>Both <em>don't</em> vary in the same manner and that's the problem. Perhaps in the perfect world with a perfectly linear transducer that radiates sound perfectly in all directions that is unchanging. In the real world, sensitivity and efficiency do not scale perfectly like they do in your equation. In the real world, a more sensitive speaker is <strong>not</strong> necessarily more efficient than a less sensitive speaker. That is simply a misconception. For so many reasons. Impedance is one reason. Frequency response is another. On-axis, off-axis dispersion is another. Power compression. The list goes on.</p><p></p><p>If you had a point source that could radiate sound in every direction, equally and simultaneously then perhaps the efficiency could predict the sensitivity. Obviously, that isn't the case. When you add variables to an equation it naturally will change the relationship. Norval made the claim on page 1 that 'the higher the sensitivity, the higher the efficiency' which is simply a generalization.</p><p></p><p></p><p></p><p>Exactly, 'without other variables'. Assuming a perfectly linear speaker (none exist). In the real world, you have to take into account those other variables. Take power compression for example. Sensitivity and efficiency do not scale nearly as well as they do in a maths equation. To suggest they do is just misleading unless, as you mentioned, one removes all other variables from the equation which does not reflect reality.</p></blockquote><p></p>
[QUOTE="Vaughan, post: 60533, member: 693"] I'm no transducer engineer but I have learned a few things over the years from a few who work in the field. Both [i]don't[/i] vary in the same manner and that's the problem. Perhaps in the perfect world with a perfectly linear transducer that radiates sound perfectly in all directions that is unchanging. In the real world, sensitivity and efficiency do not scale perfectly like they do in your equation. In the real world, a more sensitive speaker is [b]not[/b] necessarily more efficient than a less sensitive speaker. That is simply a misconception. For so many reasons. Impedance is one reason. Frequency response is another. On-axis, off-axis dispersion is another. Power compression. The list goes on. If you had a point source that could radiate sound in every direction, equally and simultaneously then perhaps the efficiency could predict the sensitivity. Obviously, that isn't the case. When you add variables to an equation it naturally will change the relationship. Norval made the claim on page 1 that 'the higher the sensitivity, the higher the efficiency' which is simply a generalization. Exactly, 'without other variables'. Assuming a perfectly linear speaker (none exist). In the real world, you have to take into account those other variables. Take power compression for example. Sensitivity and efficiency do not scale nearly as well as they do in a maths equation. To suggest they do is just misleading unless, as you mentioned, one removes all other variables from the equation which does not reflect reality. [/QUOTE]
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Audio and Video Talk
General Discussion
Audio 101 - Can your speaker be too big for your amp???
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