Lightweight, robust cellulose-aramid fiber matrix woofer. The diaphragm of the main speaker in the XS-160ES is made from Sony's unique, lightweight, and durable cellulose material, formerly known as MICA-reinforced cellulose (MRC). The latest generation diaphragm mixture has been further optimized alongside mechanical driver improvements to achieve an even wider frequency response and a softer, more natural sound profile.

By embedding it in a unique aramid fiber matrix, diaphragm resonance is eliminated and distortion is minimized—not only in the low frequencies but also in the mid and high frequencies. The result is powerful, exceptionally clear sound across all frequencies—even at high volumes.

The surround sound of the woofer features another technology from Sony. Distinctive curved notches enhance vertical vibration symmetry, resulting in significantly less distortion and greater clarity.

The five-part frame design disperses resonance, while the integrated Dynamic Air Diffuser ensures smooth cone movement, allowing for efficient air circulation and cooling of the voice coil.

Higher nominal power and optimized airflow are achieved through the acoustically optimized spider, which provides faster and more precise damping of the speaker cone. A soft dome tweeter diaphragm is directly attached to the voice coil, compatible with High-Resolution Audio and capable of reproducing ultra-high frequencies with a frequency range of up to 40 kHz.