As BlueJay pointed out, the NRC measured sensitivity, using their standard, was 86DB for 1 watt. At that time I recall that the Axiom spec was 89dB. Somewhat surprisingly, most but not all of the current models were shown with a 3-4dB higher sensitivity(e.g., the M3 at 93dB), which would represent a doubling of efficiency. The M80 spec remained the same at 91dB. This variance was pointed out here quite some time ago, and a clarification requested, but nothing was forthcoming.


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Enjoy the music, not the equipment.