4PCS Woofer Speaker Inverter Tube with Opening 42.5mm Length 80mm Suitable for 4-6 inches SpeakerTube Opening 42.5mm Length 80mm for 4-6 inches

$0.99

4PCS Woofer Speaker Inverter Tube with Opening 42.5mm Length 80mm Suitable for 4-6 inches SpeakerTube Opening 42.5mm Length 80mm for 4-6 inches4PCS Woofer Speaker Inverter Tube with Opening 42.5mm Length 80mm Suitable for 4-6 inches SpeakerTube Opening 42.5mm Length 80mm for 4-6 inches4PCS Woofer Speaker Inverter Tube with Opening 42.5mm Length 80mm Suitable for 4-6 inches SpeakerTube Opening 42.5mm Length 80mm for 4-6 inches

Specification: Item Type: Inverted Tube Total Length: Approx. 80mm/3.15in (as picture) Speaker Housing Opening Diameter: Approx. 42.5mm/1.67in (as picture) Features: 1Speaker inverting holes, also called sound tubes and air holes, are often used in inverted speakers. 2The main reason is that the sound pressure of the airflow vibrating in the box is poured out to overlap the sound pressure radiated in front of the speaker to produce a bass effect. 3Its inner wall is smooth and the ends are flared. Made of high quality ABS plastic, it is sturdy and durable. 4The airflow is very smooth and the airflow is obviously improved. It is suitable for 4-6 inch speaker. 5Compact and lightweight, it is easy to carry and easy to install. Package List: 4 x Inverted Tube