Designed to minimize standing waves and unwanted resonances, effectively reducing wind noise and buzzing sounds. Engineered to provide a superior reflection effect, enhancing the response for an elevated listening experience. Universal compatibility with a wide range of speaker types, including subwoofers, making them a versatile solution for audio enhancements. Significantly improves the clarity and quality of mid- sound in your audio setup. Due to different batches, there may be differences in product appearance and printed text, which not affect use. These speaker port tube sponges are designed to enhance your audio experience by dampening vibrations and optimizing the acoustic environment within your speakers. Ideal for home theaters, car audio systems, or portable speakers, they provide a practical solution for audiophiles seeking improved sound quality. Color: Black Material: Sponge Package Contents: 10*Speaker Port Tube Sponge Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.