Note the missing rubber "leg".

The Bose CineMate 1 SR Subwoofer in black is a high-quality home theater speaker designed for immersive sound experience. This sleek rectangular subwoofer is part of a 2.1 channel system configuration, offering clear and powerful sound output. With Bluetooth and wired connectivity options, you can easily stream your favorite music or movies for a seamless audio experience. Manufactured in Mexico, this Bose model ensures top-notch performance and reliability for your home audio setup.