Features: 1.High Performance: The back of the PCB board is clean, the layout is reasonable, the soldering point is big, the wiring line is thick, the corner place adopts the rounded corner design, the circuit conductivity is good. 2.Crossover Effect: Dual frequency support for treble, alto, and bass helps transmit treble signals to the tweeter and divides bass signals to the woofer. 3.Stable Transmission: The signals from the treble bass crossover are transmitted unobstructed, allowing the details of the music to be revealed. 4.Musical Quality: The crossover makes the treble clear and increases the intensity of the bass, so you are free to enjoy clear and natural music. 5.High Reliability: Separate the mixed signal into treble, alto and bass, and then send it to the corresponding treble, alto and bass speaker units for playback, so as to achieve the purpose of enhancing sound quality. specification:Item Type: 4 Way Crossover Filter Material: PCB Model: A-400 Frequency: 800Hz-4800Hz (the double bass works at the frequency below 800HZ, the alto works at the frequency between 800HZ-4800Hz, and the treble works above 4800HZ) Power: 180W Impedance: 4-8 OhMs Circuit: Bass is standard 12db/oct, alto is standard 6db/oct, treble is standard 12db/oct PackageList:1 x CrossoverFilter