High Efficiency Speaker Asylum

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RE: 105db/meter NON horn loaded speakers

Posted by tomservo on April 23, 2017 at 10:45:24:
For a source with no directivity, the 106dB 1w 1m sensitivity would imply about a 25% efficiency which is quite high.
An array of sources where the radiators are all less than � wavelength from each other does benefit from mutual coupling however the limit is somewhere around 25%.
I don't know of a way to do this with direct radiators above low frequencies, above that arrays of driver are individual sources and while one can form a beam, the energy time envelope also shows individual arrivals in time a "time distortion" of the input impulse.
Even with a horn this is not an easy task