Feature●?Good material ? Made of high quality ABS plastic, this product is sturdy and durable.●?Fine processing ? The inner side is smooth and the bell ends are designed at both ends. The airflow is very smooth and the airflow is obviously improved.●?Size matching ? The height of the inverted tube is 90MM and the opening is 76MM. It is suitable for speakers with 4-8 inch speakers.●?Bass booster tube ? Speaker inverting holes, also called sound tubes and air holes, are often used in inverted speakers.●?Speaker Port Tubes? 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.Description
Specification:
Item Type: Inverted Tube
Height: Approx. 90mm / 3.54in (as shown in picture)
Opening: Approx. 76mm / 2.99in (as shown in picture)
Package List:
Inverted Tube x 4