Kalevel 2 Pcs 3 Inch Speaker Port Tube Subwoofer Port Tube Bass Reflex Speaker Box Bass Port Hole Accessories Components Vent Port for Home

? Features: - Value Set: (Diameter * Length) C Set:2.6’’ x 6.3’’. - The 3 inch speaker port tube is made of premium ABS plastic and paper material, durable and reusable. - Because the sound pressure of the airflow vibrated by the speakers in the box pours out and overlaps with the radiated sound pressure in the front of the speakers, the 3 inch subwoofer port produces excellent bass effects. - The 3 inch bass port can significantly enhance the radiation intensity of low frequency and improve the efficiency of the speaker. In other words, it can amplify the volume of the bass without increasing the power of the speaker itself. - The inside of the subwoofer port tubes are very smooth, and the one side is designed with flare for smoother airflow and better sound quality. - The port tubes for subwoofer box can be used to replace old speaker parts and make new speakers, suitable for inverted speakers, portable speakers, home speakers etc. ? Package Including: 2 * Speaker Port Tubes (C Set)