Real progress is achieved by having the courage to question long-standing conventions and to blaze new trails. In the history of AUDIO PHYSIC, it has always been of the highest priority to reproduce music as naturally and as loss-free as possible.
It is the body of natural musical instruments that lends music its typical tone color and volume. The body is an integral part of the oscillatory system.
Oscillation is precisely what you don't want in loudspeakers. Unlike natural instruments, a loudspeaker cabinet is not part of the oscillatory system. If the cabinet or any part thereof, excited by the music reproduction, starts to oscillate, additional vibrations are added on top of the signal which are not contained in the original. The result is discolorations.
From the beginning, AUDIO PHYSIC has always engineered loudspeaker cabinets to ensure the least amount of intrinsic vibrations possible. This was how the special shape of many AUDIO PHYSIC loudspeakers developed, not to mention the intelligent sandwich design of several speaker models.
Even more effective, however, is to already stop a transference of vibration at the place where the sound originates, i.e. on the chassis. It is not an easy task, after all, the chassis need to be firmly connected to the cabinet. Normally they are bolted onto the cabinet.
Conventional chassis have a basket that bears all the moving parts as well as the driver magnets. The moving parts include the voice coil, the coil carrier, the spider, the diaphragm and the surround. During sound reproduction, they transfer vibrations via the surround and the spider to the basket and thus to the loudspeaker cabinet. These vibrations can distort the original signal. Because if the cabinet vibrates, even ever so slightly, it creates its own membrane of sorts, having a large surface area. Add to this the fact that the chassis move with the vibrating cabinet, after all they are firmly attached to one another a sphere of influence that can have severe detrimental effects on the sound, in particular on attention to detail and neutrality.
So AUDIO PHYSIC looked for ways to combat rogue vibrations at the source and developed a radically new basket design for mid-range drivers and tweeters. The HYPER HOLOGRAPHIC CONE technology from AUDIO PHYSIC cuts the Gordian knot and reduces the transference of vibration from the chassis to the cabinet and vice versa with dramatic effects; effects that are both measurable and audible.
The Hyper-Holographic Cone Tweeter III
The HYPER HOLOGRAPHIC CONE tweeter HHCT III is unique in its architecture and engineering. It has little in common with traditional tweeters. The most striking feature is its cone membrane.
The sound dispersion of traditional domes quickly fragments and is not homogeneous, as parts of the membrane no longer exhibit piston-like movements. By contrast, the ceramic-coated metal membrane of the HHCT III is incredibly sturdy, yet at the same time it is light and extremely stiff. It has linear lift across a very wide frequency range and thus extremely balanced sound dispersion characteristics. In order to eliminate natural resonance of the membrane, the HHCT III also features Active Cone Damping III. Here the surround is first glued to the edge of the cone, then pulled outward and connected to the inner cone by means of a ring. Through this tension, the membrane is precisely centered and dampened at the same time.
Because the cone membrane of the HHCT III has a comparatively large surface area, a small deflection is sufficient to excite the ambient air to vibrate. That is a major advantage. Because the smaller the lift in order to reach a certain volume, the lower the harmonic distortion. The radiant heat in the oscillating system is thus kept to a low level. Discolorations due to high temperature fluctuations, which is commonplace with conventional chassis, are practically unknown with the HHCT III.
A powerful ferrite magnet ensures an extremely homogeneous magnetic field, enabling the oscillating system to execute vast dynamic leaps lightning fast. From the AUDIO PHYSIC CODEX model on, a neodymium drive handles this task with enormous field strength.
As an impressive result, the HHCT III measures linear reproduction far above the audible range, as well as offering exceptionally homogeneous dispersion characteristics at the lowest levels of distortion. In terms of sound, the HHCT III is neutral in the truest meaning of the word. Thanks to its inimitable neutrality, it is dedicated purely to music reproduction, and is the ideal tool for objectively judging the quality of music recordings. The HHCT III is without a doubt a high-tech masterpiece, true to the motto of AUDIO PHYSIC, "No loss of fine detail".
See also: The Hyper-Holographic Cone Midrange