3Pcs Speaker Port Tube, Subwoofer Bass Tube, Woofer Port Box Bass Air Tube, Bass Box Vent for 6.5-8 Inch Speakers

Description

• ✿【 and 】Adopt ABS plastic material, sturdy and , suitable for 6.5-8 inch speaker.
• ✿【Environmentally】Environmentally friendly and safe, without any harmful substances, you can use with confidence.
• ✿【Features】Smooth inner wall design, with horn mouth design of the both ends. Smooth airflow, obviously reducing the sound.
• ✿【Speaker Port Tube】The speaker phase-inverting hole, also called sound tube or air hole, is often used in the inverted-phase speaker.
• ✿【Bass Box Vent】The inverter tube is to pour the sound pressure of the airflow vibrating inside to the front, and overlap with the sound pressure radiated from the speaker to make a bass effect.