uxcell 2pcs X Speaker Port Subwoofer Bass Box Bass Woofer Speaker Bass Air Port for Speaker Cabinet 85x110/3.3 4.3" Tube, Tube, Box, Box, DJ/PA

【Voltage Compatibility】 When using electrical appliances, please note that they are designed for Japanese voltage specifications (90-110V), so if you use them with a different voltage, it may cause a malfunction.

【Plug Type】 Our products use Japanese plug types (A or B type). Please use a conversion adapter if necessary.

【Important Note on Transformers and Adapters】 A transformer adjusts voltage to match your device’s requirements. A conversion adapter only changes the plug shape and does not adjust voltage. Using only a conversion adapter without a transformer may result in damage to the product.

【Liability】 We are not responsible for malfunctions or damages caused by improper use, such as operating the product without a transformer. Speaker port tubes are used to improve the bass response of various types of speakers. There are various types that are useful for vented box designs, including tubes with adjustable length ports and flared ports. Total Length: 110mm/4.3"; Opening Diameter: 85mm/3.3"; Maximum Diameter: 100mm/3.9"; Material: Plastic; Package Includes: 2 x Speaker Port Tubes Regular tubes create unpleasant turbulence at the port entrance and exit, producing unwanted noise and poor sound quality. This port tube overcomes these conditions, allowing you to experience better looks, lower distortion and better overall sound quality. These port tubes offer reliable and convenient installation while providing a finished, "professional" look to your bass speaker build project. Standard mounting holes make these tubes easier to install than others on the market. Please check the size carefully before purchasing the speaker in the speaker box. What is this? Speaker port tubes are used to improve the bass response of various types of speakers. There are various types that are useful for vented box designs, including tubes with adjustable length ports and flared ports. What you get: Total length: 110mm/4.3"; Opening diameter: 85mm/3.3"; Maximum diameter: 100mm/3.9"; Material: Plastic; Package includes: 2 x Speaker Port Tubes What are the product benefits? Regular tubes cause unpleasant turbulence at the port inlet and outlet, resulting in unwanted noise and poor sound quality. This port tube overcomes these conditions, allowing you to experience better looks, lower distortion and better overall sound quality. How to use? These port tubes offer reliable and convenient installation while providing a finished, "professional" look to your bass speaker build project. Standard mounting holes make these tubes easier to install than others on the market. What to pay attention to? Before buying a speaker in a speaker box, please check the size carefully.