- Large capacity design with thoughtful construction, offering reliable performance and precise control, while maintaining an attractive appearance. - Inductance uses anaerobic copper winding and pure copper wire for low distortion and stable signal. - Crossover design supports soprano highs and bass through a binary frequency sound box, and can also be used in 2.1 systems with small satellite boxes and in automotive loudspeakers. - Suitable for speaker impedance in the range of 4 to 16 ohms, providing broad compatibility with common drivers. - Onboard 4 jumpers to optimize audio performance: Jumper A and Jumper B for bass, Jumper C and Jumper D for treble. Allows simple, user-controlled tuning to suit different speakers and rooms. - No welding required for overall debugging; easy to assemble and adjust. The design supports convenient tuning of sound effects according to user preference. - Key advantages: improves sound balance across frequencies, enables quick customization without soldering, and accommodates a range of speaker configurations for versatile use. - Applications and use scenarios: - Home stereo or bookshelf speaker systems: upgrade a two-way or multi-way speaker to achieve clearer highs and solid bass with simple jumper adjustments. - 2.1 system or small satellite configurations: integrate into a compact setup to optimize the relationship between sub/satellites for improved overall clarity. - Automotive or DIY speaker projects: install in car audio builds or custom speaker projects where easy tuning and robust copper winding components help deliver clean sound in challenging environments.