As with all of ATC Monitors’ drive units, their HF drivers (tweeters) are designed, engineered and built in-house to exacting standards. In-house design and manufacture allows ATC to be in direct control of the most important elements in a loudspeaker system – the components – leading to the highest possible system performance.
After years of painstaking development, ATC are proud to introduce a pair of HF drivers worthy of partnering ATC’s range of formidable bass/mid and mid-range drive units. The outstanding SH25-76 and range-topping SH25-76S are the result of over 40 years’ experience building the world’s finest acoustic transducers.
ATC SH25-76 Drivers
ATC SH25-76S Drivers
DUAL SUSPENSION TWEETER
ATC’s approach to tweeter design is unique in the marketplace. By incorporating a secondary suspension component the moving assembly is naturally constrained to travel only in the axial direction. The result is a design that
suppresses rocking modes and ensures lower distortion levels. The additional stability that this approach provides over more conventional tweeter construction negates the need for ferro-fluid (usually required for cooling,
damping, etc.). As a consequence, the magnetic gap can be made smaller allowing ATC tweeters to not only perform optimally, for longer, but also offer improved power handling over conventional designs.
While this unique tweeter topology offers superior performance, the resultant increased moving mass and overall complexity must be offset and overcome by the perfect alignment of all components. Consequently manufacturing and assembly demands exceptional care and accuracy – a level of capability that ATC excels at.
The standard SH25-76 and its ultimate ‘S’ spec stablemate approach these engineering challenges in different but equally successful ways. The standard tweeter has a novel and lighter moving mass bracing component, while the ‘S’ spec driver has an exceptionally powerful motor assembly that, when combined with the optimally stiff and lightweight coil former, delivers vanishing low levels of odd harmonic distortion and a well-controlled extended frequency response beyond the limit of human hearing.
Read more about ATC’s High Frequency Drivers on their website.