HIGH QUALITY AND SUPER DURABILITY: wire wound ceramic resistor and high-quality metal film capacitors, load power, long-term durability, never burnout.PERFECT HIFI SOUND QUALITY: Make the treble clear and increase the intensity of the bass, freely enjoy clear and natural music, speaking, of bass or treble.FUNCTION: To separate the mixed audio signal into a treble, bass, and then were sent to the corresponding treble, bass speaker unit in playback, resulting in enhance the sound quality purposes. You can also use only bass or treble mode if you .WIDE APPLICATION: This speaker 2 way speaker crossover has the function of dual frequency , which can be widely use in treble and bass speakers, car full frequency speakers, or use treble/ bass alone.SUITABLE FOR DIY: This speaker frequency crossover uses a circuit board design, with precise cuts and lines, can be freely welded, easy to install, more convenient to use, suitable for DIY.Color: blackMaterial: plasticPackage Contents:2 x Speaker CrossoverOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.