Usage Tips: Description/Features: High-Performance Audio: Experience superior sound with our 3-inch subwoofer speaker, designed for 15W output and 4 ohm impedance, ideal for custom audio projects. Construction: Built with durable materials, this 78mm speaker delivers consistent performance, making it a reliable choice for DIY audio setups. Versatile Application: Perfect for building or upgrading bookshelf speakers, this subwoofer enhances any home audio system with rich, deep bass and clear, vibrant sound. Easy Installation: Designed for simple setup, allowing audio enthusiasts and DIY users to enjoy high-fidelity sound quickly and easily. Specifications: Color: Black Material: ABS Package Contents: 1 x Audio Speaker Note: The package includes only the items listed above. Other products are not included. Due to variations in lighting and display settings, the color of the item in the image may differ slightly from the actual product. Dimensions may vary by +/- 1-3 cm due to manual measurement. Product appearance and labeling may vary slightly between batches, but this does not affect functionality.