Product Includes: 3pcs Two-Way Crossover (High and Low), Maximum Power Handling: 130W (or less), Crossover Frequency: 3500Hz, Output Impedance: 4-8 ohms | Applicable Range: Suitable for speakers with a size of 6 inches or smaller. | Instructions:IN+, IN-: Connect to the input positive and negative terminals；W+, W-: Connect to the woofer (low frequency) positive and negative terminals；T+, T-: Connect to the tweeter (high frequency) positive and negative terminals. | Function: Separates sound signals of different frequency bands (high and low), amplifies them individually, and sends them to the corresponding frequency band speakers for playback. | Circuit Filtering:High frequencies: Standard 12dB/oct；Low frequencies: Standard 12dB/oct.