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Old 07-14-2002, 07:16 PM   #1
Lee

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How does speaker sensitivity affect real world SPL?

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4.2 How does speaker sensitivity affect real world SPL? Will a higher sensitivity give me a larger SPL? [MS]
When it comes to mids and highs, efficiency (sensitivity) is a fairly good indicator of output differences at the same power level. When it comes to subwoofer performance, the driver's sensitivity is irrelevant unless you are also specifying a box volume.

An efficient sub requires a larger box to achieve equivalent extension to a less efficient sub. In a small box, the less efficient sub will actually be LOUDER at low frequencies at the SAME POWER as the more efficient sub.

Linear excursion is a very good indicator of ultimate output capability (given sufficient power to drive the speaker to that point.) To make sound you must move air; therefore, the more air you move, the more sound you make. When comparing two speakers of equal surface area, the one with greater excursion capability will play louder given sufficient power.
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