ATC SCM12 Pro (Pair)

The tweeter is a 25mm/one-inch soft-dome designed around ATC’s unique dual-suspension technology. Unlike conventional tweeters, this precision part employs two suspensions, offering far greater control of the voice coil and dome motion — especially at higher sound pressure levels. The result is an extended high-frequency response with much greater clarity and definition due to the reduction in disturbing an-harmonic distortion. Listener fatigue is also greatly reduced, resulting in users being able to work for longer periods with greater accuracy.

At the lower end of the frequency spectrum, mid/bass reproduction is handled by ATC’s 150mm/six-inch proprietary CLD drive unit. Using a 45mm/1.75-inch diameter voice coil, and employing an FEA (Finite Element Analysis) optimised high-energy symmetric gap motor system, the driver is capable of tremendous dynamic range with minimal power compression. Cone construction is courtesy of another proprietary ATC technology that represents another advance in driver performance — namely, Constrained Layer Damping (CLD), a process that uses multiple laminated fabric cones to form a stiff, light, and tremendously well-damped structure. Speaking acoustically, this construction creates a smoother on- and off-axis frequency response and also a reduction in distortion leading to a more lifelike reproduction of source material. Meaningfully, judgements and decisions can be made more quickly, more accurately, and for longer periods of time by busy working audio professionals.