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Critic's Corner Discuss a review. Provide constructive feedback. Talk to the industry. |
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In Reply to: "However, this reduces sensitivity." Aye, there's the rub! posted by John Marks on July 21, 2024 at 12:54:44:
Hello,
I came back to this comment and realized it indicates that you might not understand sensitivity well. If not, you're not alone, I made a whole video about it when Robert Harley got it wrong.
How "sensitive" a speaker is depends on the frequency or, preferably, frequencies at which you measure. The baffle step varies per speaker, and in the case of that Franco Serblin speaker, it starts happening just shy of 1000Hz. So if someone where to take a sensitivity measurement at, say, 400Hz, it would be unchanged. Instead, the rise of 6dB would be at its fullest by 1000Hz. So the entire speaker didn't change by 6dB if you compensate for the baffle step -- 400Hz remains the same, the frequencies just below, at, and above 1000Hz get reduced.
We average sensitivity over a range -- 300Hz to 3000Hz -- so by doing so, once again the sensitivity wouldn't change by the full 6dB.
Finally, if you have a speaker that's 78dB, you've got a real problem with it -- that low sensitivity will likely mean it'll blow up if someone plays it loud. It's too low.
Doug Schneider
SoundStage!
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Follow Ups
- Not quite understanding sensitivity? - Doug Schneider 18:49:22 07/21/24 (0)
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