DUAL-FORCE IS ONE OF THE CORE INNOVATIONS OF BAREFOOT SOUND
Cabinet vibrations are a significant source of distortion and coloration in most loudspeakers. The primary mechanism is simple: action and reaction. As the driver motor forces the cone to move back and forth to generate sound, the cone exerts an equal and opposite force on the motor. This force is transmitted through the driver frame to the cabinet. The effect is especially prevalent in the low frequencies, where the cone motion is greatest.
Barefoot Sound’s innovative Dual-Force™ Technology design eliminates distortion and coloration from occurring in the first place.
While Barefoot cabinets are massive and well-braced, we also tackle the problem at its source by eliminating vibrations before they even begin. This is achieved through our innovative Dual-Force™ Technology design. The low-frequency drivers are mounted on opposing sides of the cabinet, and their motors are locked together. As the cones are driven in and out in opposite directions, the forces exerted on the motors cancel each other. The vibrations never make it to the cabinet because they are not allowed to develop in the first place. This layout also provides the additional benefit of forming a massive internal metal cabinet bracing. Additionally, since the wavelengths generated by the subwoofers are much larger than the speaker cabinet dimensions, the subs radiate as if they were a single point source located on the axis with the tweeter.