4 Inch Paper Speaker Cone Subwoofer Replacement with Rubber Surround, Durable DIY 2 Pcs

4inch paper speaker cone with rubber surround, designed as a direct replacement or part for small drivers. Precision dimensions and durable materials make it suitable for restoring sound performance in compact speakers and DIY builds. Key features Cone diameter: 100 mm (about 4 inches) overall. Voice coil compatibility: fits coils up to 25.5 mm (about 1 inch) inner diameter. Mounting depth: 23 mm. Surround: singleroll rubber surround, 90 mm outside diameter, 75 mm inner diameter, 7.5 mm surround width. Materials: grade paper cone and rubber surround. Package: 2 pieces of 4inch paper speaker cone with rubber surround. Why this part matters Restores driver function: replaces damaged cones or surrounds to recover movement of the voice coil and diaphragm, restoring audible output. Durable construction: grade paper resists scratches and stretching while maintaining the flexibility needed for cone motion. Coil protection: sealed round cone edge helps block dust and debris from entering the gap and protects the voice coil. Predictable sound character: paper cones typically deliver a smooth frequency rolloff. Note that paper can absorb moisture over time, which may alter mass and damping characteristics. How it works The cone is the diaphragm of the loudspeaker. When the voice coil moves forward and backward, it drives the cone much like a drum skin, creating air pressure variations that produce sound. This replacement cone is sized to match small 4inch drivers and to align with standard voice coil inner diameters up to 25.5 mm. Compatibility and fit Designed to fit speakers with a 4inch overall cone diameter and voice coils up to 25.5 mm inner diameter. Depth of 23 mm accommodates shallow mounting placements. Singleroll rubber surround with 75 mm inner diameter provides the suspension and edge sealing for the cone. Practical applications damaged car or bike speakers where the original 4inch cone or surround is torn or degraded. Rebuild small bookshelf or desktop speakers to restore sound clarity and diaphragm movement. DIY speaker projects and prototyping where a 4inch paper cone and rubber surround are required. Additional notes Paper cone material is sensitive to moisture; store and install in dry conditions to maintain original mass and damping properties. Ensure the voice coil diameter and mounting depth match your driver before installation to avoid fitment issues. Package contents 2 pieces 4inch paper speaker cone with rubber surround.