4PCS Speaker Port Tubes Sponge Portable Subwoofer Cabinet Port Sponge Air Vent Sponge for Portable

Feature: 1. Enhanced Sound Effect: Reduce speaker vibration, minimize wind noise and buzzing, enhance mid bass sound, improve overall sound quality. Provide better "bass reflection" effect for speakers. 2. Wide Compatibility: Suitable for improved speakers, speaker cabinets, home speakers, car speakers, portable speakers, subwoofers. Fits speaker port tubes, bass air ports, cabinet port tubes. 3. Enduring Materials: Crafted from sponge, this subwoofer vent tube sponge allows durability and long lasting performance, high toughness, not easy to age and crack. 4. Correct Size Selection: Choose sponge diameter slightly larger than the inner diameter of the speaker port tube by 5mm for stable fitting. Enhance low frequency response for various types of speakers. 5. Easy Installation: Simply insert the sponge into the speaker port tube for improved sound performance, giving you dependable and professional use, saving your time and effort. Specification: Item Type: Speaker Port Tube Sponge Size: Diameter: Approx. 35mm 1.38in, height: 50mm 1.97in. Package List: 4 x Speaker Port Tube Sponge Note: The sponge is produced by stamping process, and the product size may have small errors, which is normal.