Kalevel 2 Pcs 4 Inch Speaker Port Tube Subwoofer Port Tube Bass Reflex Speaker Box Parts Replacement Accessories for Sound System Home

Kalevel 2 Pcs 4 Inch Speaker Port Tube Subwoofer Port Tube Bass Reflex Speaker Box Parts Replacement Accessories for Sound System Home

• 🔊【Value Combination】2 * speaker port tubes. (3.9’’ x 6.3’’)
• 🔊【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 box bass produces excellent bass effects.
• 🔊【Outstanding Feature】The speaker cabinet port tube 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 flared port tube is very smooth, and the two ends are designed with flares for smoother airflow and better sound quality.
• 🔊【Multipurpose】The bass reflex port can be used to replace old speaker parts and make new speakers, suitable for inverted speakers, portable speakers, home speakers etc.