Is efficiency important in a loudspeaker?
Only in terms of sheer volume, assuming we are talking about a quality amplifier source. The more important aspect of a loudspeakers reaction to an amplifier is having a flat impedance curve (Ohm rating) across the frequency spectrum, remember, an amplifier does not react to loudspeaker efficiency but loudspeaker impedance. A loudspeaker with a high efficiency but an erratic impedance response-in some cases dipping as low as 1 ohm!-will make it very difficult for an amplifier to do its job properly. AAD loudspeakers are engineered to have a very smooth and linear impedance curve across the specified frequency range. This means when you listen to an AAD loudspeaker you will hear the music or movie as it is recorded, not the amplifier doing gymnastics as it struggles to keep up with huge impedance swings.
