2Pcs Speaker Port Tube, 45mm x 117mm ABS Speaker Cabinet Port Tube Subwoofer Bass Reflex Tube

High Quality Material - ABS plastic is sturdy and lightweight. Solid, the inner wall is very smooth.Profession - The airflow is smooth, reducing the noise caused by the airflow, can Increase the bass response of your system without increasing the power of the speaker itself.Feature - The sound pressure of the airflow vibrated by the speaker in the box is poured out and the sound pressure radiated from the front of the speaker overlaps to produce a bass effect.Speaker Port Tube is used to improve the bass response of many types of speakers.Easy to Install - Suitable for power amplifier speakers, build your own speakers or replace old speakers. Specification:Material: ABSDimension: 37 x 77mm - Big Hole Outer Dia: 43.5mm / 1.71", Small Hole Outer Dia: 33.5mm / 1.31", Opening Hole Dia: 37mm / 1.45", Overall Height: 77mm / 3.03";50 x 142mm - Big Hole Outer Dia: 63mm / 2.48", Small Hole Outer Dia: 45mm / 1.77", Opening Hole Dia: 50mm / 1.96", Overall Height: 142mm / 5.59";56 x 111mm - Big Hole Outer Dia: 68mm / 2.67", Small Hole Outer Dia: 53mm / 2.08", Opening Hole Dia: 56mm / 2.2", Overall Height: 111mm / 4.37";60 x 114mm - Big Hole Outer Dia: 72mm / 2.83", Small Hole Outer Dia: 56mm / 2.2", Opening Hole Dia: 60mm / 2.36", Overall Height: 114mm / 4.49";60 x 150mm - Big Hole Outer Dia: 72mm / 2.83", Small Hole Outer Dia: 56mm / 2.2", Opening Hole Dia: 60mm / 2.36", Overall Height: 150mm / 5.9";65 x 140mm - Big Hole Outer Dia: 78mm / 3.07", Small Hole Outer Dia: 60mm / 2.36", Opening Hole Dia: 65mm / 2.56", Overall Height: 140mm / 5.51";65 x 180mm - Big Hole Outer Dia: 78mm / 3.07", Small Hole Outer Dia: 58mm / 2.28", Opening Hole Dia: 65mm / 2.56", Overall Height: 180mm / 7.08";20 x 40mm - Big Hole Outer Dia: 26mm / 1.02", Small Hole Outer Dia: 17mm / 0.67", Opening Hole Dia: 20mm / 0.78", Overall Height: 40mm / 1.57";25 x 34mm - Big Hole Outer Dia: 30mm / 1.18", Small Hole Outer Dia: 21mm / 0.82", Opening Hole Dia: 25mm / 0.98", Overall Height: 34mm / 1.34";26 x 95mm - Big Hole Outer Dia: 30mm / 1.18", Small Hole Outer Dia: 23mm / 0.9", Opening Hole Dia: 26mm / 1.02", Overall Height: 95mm / 3.74";35 x 68mm - Big Hole Outer Dia: 45mm / 1.77", Small Hole Outer Dia: 30mm / 1.18", Opening Hole Dia: 35mm / 1.37", Overall Height: 68mm / 2.67";40 x 117mm - Big Hole Outer Dia: 51mm / 2", Small Hole Outer Dia: 34mm / 1.34", Opening Hole Dia: 40mm / 1.57", Overall Height: 117mm / 4.6";45 x 117mm - Big Hole Outer Dia: 59mm / 2.32", Small Hole Outer Dia: 33mm / 1.3", Opening Hole Dia: 45mm / 1.77", Overall Height: 117mm / 4.6";Package Include: 2 x Speaker Port Tube

• High Quality Material - ABS plastic is sturdy and lightweight. Solid, the inner wall is very smooth.
• Profession - The airflow is smooth, reducing the noise caused by the airflow, can Increase the bass response of your system without increasing the power of the speaker itself.
• Feature - The sound pressure of the airflow vibrated by the speaker in the box is poured out and the sound pressure radiated from the front of the speaker overlaps to produce a bass effect.Speaker Port Tube is used to improve the bass response of many types of speakers.
• Easy to Install - Suitable for power amplifier speakers, build your own speakers or replace old speakers.