The ATC drivers come as a range of four units - 9inch, 12inch, 15inch (3inch voice coil) and 15inch (4inch voice coil). Each uses sophisticated design principles to lower radically the distortion levels considered normal in other designs. ATC voice coils are formed of edgewise-wound copper ribbon wire, wound on an aluminium or kapton former. This structure, together with the use of new, improved adhesive technology and small coil-gap clearances, allows extremely high power handling capacity, with excellent reliability. The diaphragms of all ATC drivers are moulded using the most accurate process available, and are then treated and impregnated to add strength and damping. We build high acoustic performance, with reliability, into every one.
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