Treble and Bass Dual Frequency Divider: This is a professional frequency divider, which is widely installed in the speaker. To separate the mixed 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.Playing an important role of the total frequency signal segmentation. Perfect HIFI Sound: Speaker Frequency Divider,Make the treble clear and increase the intensity of the bass, freely enjoy clear and natural music.Treble and bass dual frequency support, helps to transmit the treble signal to the tweeter unit, and divide the bass signal into subwoofer unit. High Quality and Super Durability: wire wound ceramic resistor and high-quality metal film capacitors, its large load power, long-term durability, never burnout. Wide Application: Unit Hi-Fi Sound Filter Module Board,Widely use in treble and bass speakers, car full frequency speakers, or use treble/ bass alone. DIY Speaker Circuit Board: 2 Way Frequency Divider,Circuit board design with precise cutouts and lines, free for welding, very suitable for DIY.High quality and free welding. Filtering: 1 Treble+ 1 Bass 2 Ways Power: 450W Impedance: 4-8ohm Frequency point: 2850H/2900Hz Colour: Blue Material: PCB+electronic components Size: .145x90x40mm Package Contents: 4 * Speaker Crossover Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.