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"Power hungry" speakers

Hi folks, can you please explain to me why certain speakers so demanding with regard to amplifier power? I'm not talking about some notoriously-difficult-to-drive Apogees or some old Thiel models, but about speakers like the Sonus Faber Extrema's. These speakers do not belong to the realm of the less-than-1-Ohm-impedance-drop speakers, but need high powered amplifiers if you want to make them sing. Even 300 Watts wouldn't be enough! What is this for some ridiculous statement (or is this a fact?). What is the explanation for this phenomenon? I do not know much about physics, but I wonder what is happening with those Watts inside the speakers: will they be converted into warmth or something?
dazzdax

Showing 1 response by dweller

dweller's avatar
dweller
3,843 posts
 
I believe the motor magnet affects efficiency.
The stronger the magnet, the louder the speaker will play with x amount of power.
The size of the drivers is also a factor. Tiny drivers cannot move enough air (to go loud) with average power.
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