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General speaker questions for audio and home theater.

" most smallish speakers are still not struggling too hard at 60hz "

Hi and sorry but i am not sure about this
I am attaching a graph taken from the italian magazine Audio Review where you see the SPL at 1 meter from the nice Kef ls50 with max 5% of IMD.
We can clearly see that at 60Hz the SPL (with IMD< 5%) is limited to 87dB/1 meter
I have noticed that these curves are generally related to the woofer size
Of course not all 5" woofer are equal but the SPL curve looks quite similar
Maybe 87dB at 1 meter is a lot i do not know for sure
But this is the graph ...

Kind regards,
bg



Edits: 12/02/14

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