This crossover board refers to the commonly used resistance-capacitance crossover design, with simple structure and low cost. It is set as a stereo four-channel output structure. It inputs stereo left and right channel signals and outputs 4-channel signals, which are divided into left treble, left and right The treble and right can directly drive the 4-way power amplifier circuit.Board structure: Stereo four-channel output, left and right treble, left and right Op amp chip: The domestic high-precision NE5532 three op amps have chip socketsThe power supply range of the AC transformer is dual 6V to dual 15V. It is recommended to use a transformer 12V, and that the maximum value should not dual 15.Colour:Photo ColorMaterial:plasticSize:9.3 x 6.3cm Package Contents:2 * Active Crossover FilterOnly the above package content, other 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.