Great discussion on HIGH efficiency but WHAT MAKES A SPEAKER Efficient? PARTS PARTS PARTS!! Excellent Design, low weight material for cone and suspension, Excellent magnets, proper wiring and design. Oh and Size of the speaker makes a difference also, generally larger drivers are more expensive as the weight requires better design and parts to keep efficiency. Everything has exceptions however.
Horns have become very popular as a high efficiency design but any design can have a high efficiency rating, however the more speakers you have in a design the more energy that is wasted from crossovers and additional components, this one of the reasons why single driver systems have continued in popularity.
Horns have become very popular as a high efficiency design but any design can have a high efficiency rating, however the more speakers you have in a design the more energy that is wasted from crossovers and additional components, this one of the reasons why single driver systems have continued in popularity.