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4PC Speaker Inverter Tube Speaker Port Tube Speaker Inverting Hole with 117mm Total Length Smooth Inner Wall Sturdy

<div><ul><li> APPLICATION This speaker inverter tube is usually used in 3-4 inch inverted speakers. The total length of the inverter tube is 117mm, and the opening diameter of the speaker housing is 40mm.</li><li> SMOOTH INNER WALL This tube inverter has a smooth inner wall with open ends. The airflow is very stable and significantly improved. Lightweight and easy to carry. Easy to install, no complicated steps are required.</li><li> WORKING PRINCIPLE The main principle of this product is to suppress the sound of the vibrating airflow in the cabinet so that it overlaps with the sound pressure radiated in front of the speaker to produce a bass effect.</li><li> DURABLE This speaker port tube is made of high-quality ABS material, strong and durable, not easy to wear and damage, and has a long service life. Black color design, resistant to dirt and stains, stylish and beautiful.</li><li> PROFESSIONAL MANUFACTURING This speaker inverter tube is professionally manufactured and produced in strict accordance with quality specifications, with stable signal transmission performance and high reliability.</li></ul></div>

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4PC Speaker Inverter Tube Speaker Port Tube Speaker Inverting Hole with 117mm Total Length Smooth Inner Wall Sturdy

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