Amplify your sound. The surround of the XS-W122ES Mobile ES subwoofer features distinctive curved notches. This Sony-developed technology improves vertical vibration symmetry, reducing sound distortion and increasing clarity. The five-piece frame design disperses resonance, while the integrated diffuser ensures efficient air circulation for smooth cone movement and voice coil cooling. The optimised spider enables a higher load capacity and improves airflow. The profile ensures faster and more precise suspension of the speaker cone.