Soundbars By POMK
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0Subwoofer Box Port Tube, 40mm X 117mm Speaker Cabinet Port Tube Practical ABS Plastic Professional for Bass Effect for 3-4 Inch Speakers(Perforated 40 Tube) - Product Features
- The main principle 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.
- The total length of the inverting tube is 117mm, and the opening diameter of the speaker shell is 40mm.
- Speaker inverting holes, also called sound tubes and air holes, are often used in inverted speakers.
- With smooth inner wall and the two ends are flared. The airflow is very smooth and obviously improved.
- Applicable to 3-4 inches speakers. The speaker port tube adopts high quality ABS plastic, it is sturdy and durable.
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