🔊【Value Combination】2 * speaker port tubes. (2.9'' x 3.5'')
🔊【Bass Effect】Because the sound pressure of the airflow vibrated by the speakers in the box pours out and overlaps with the radiated sound pressure in the front of the speakers, the speaker parts produce excellent bass effects.
🔊【Outstanding Feature】The speaker box parts can amplify the volume of the bass without increasing the power of the speaker itself, improving the speaker's efficiency
🔊【Exquisite Workmanship】The inside of the black port tube is very smooth, and the two ends are designed with flares for smoother airflow and better sound quality.
🔊【Multipurpose】The bass reflex tube can be used to replace old speaker parts and make new speakers, suitable for inverted speakers, portable speakers, home speakers etc.