Delta Manual

The theory of the Active Servo Technology is based upon two major factors. Active Servo Processing speakers reproduce the bass frequencies through an “air woofer”,which is a small port or opening in the speaker’s cabinet. This opening is used instead of,and performs the function of,a woofer in a conventionally designed speaker system.

Thus,signals of low amplitude within the cabinet can,according to the Helmholtz resonance theory,be output from this opening as waves of great amplitude if the design is such that the size of the opening and the volume of the cabinet are in the correct proportion to satisfy a certain ratio.In order to accomplish this,moreover,the amplitudes within the cabinet must be both precise and of sufficient power because these amplitudes must overcome the “load” presented by the air that exists within the cabinet.

Thus it is this problem that is resolved the employment of a design in which the amplifier functions to supply the signals. if the electrical resistance of the voice coil is reduced to zero,the movement of the speaker unit would become linear with respect to signal voltage,and,to accomplish this,a special negative-impedance of the amplifier is used.

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