Imported professional audio components and high-intensity combination are used to create a high-quality crossover that truly restores the details of the sound, allowing you to feel the immersive and shocking sound effect. 3 high-temperature-resistant large inductors. The inductors are fixed with cable ties and special glue for high-temperature-resistant audio to prevent resonance. On the treble line, the treble circuit is composed of capacitors in series and inductance to the ground, and the switch can adjust the volume. The material is sufficient, the treble is clear and bright, the midrange 10 microfarads filter out the bass and the inductance connects in series to filter out the treble, so that the treble and bass cannot pass through, and it is compatible with midrange speakers between 3 inches and 6.5 inches. Solder-free wire terminals correspond to the input, treble, midrange, and bass speakers, which means that the frequency divider can be connected to it without a soldering iron. The material is very sufficient and easy to use. It is a powerful tool for speaker DIY upgrades. Model: 3003 Filter characteristics: 1 high, 1 medium, 1 low three-way frequency Power: 250W Impedance: 4-8 ohms Crossover point: Bass/midrange 850Hz, treble/midrange 2 ways, 200Hz-5500Hz switch adjustable Size: 138 x 90 x 33mm Material: PC+Metal Color: as shown Package Contents: 4 x Frequency Divider