Some of the innovative improvements for the SX Series include the composite alloy-based diaphragms of the midrange and bass units which provide detailed sonic performance and extremely low distortion from the driver due to the stiffness of the material. The Mission TD treble unit dome is made of light but very rigid Titanium which reproduces high frequencies with astonishing clarity and purity. Integrated into the front of each cabinet are die-cast and precision-engineered aluminum driver support baffle. This supports the high-tech drive units and keeps them in precise alignment as well as ensuring freedom from extraneous vibration. In addition, the new Mission TD treble unit is mounted on its support to keep it free from the perturbations of mechanical energy imparted from the bass unit.