1. This crossover filter is suitable for treble + midrange + bass speakers, with speakers compatible with 4-8 ohm impedance. The finished products are primarily used for better coordination and sound quality. Debugging accessories are provided at the time of purchase. 2. This crossover filter is a popular in-stock product, connectable to various speakers. It's suitable for treble and midrange, delivering the best sound quality. However, not all speaker and crossover filter combinations are optimal. After use, you might experience excessive or insufficient treble, low-frequency cutoff, or overly thick low frequencies, and imbalances in the midrange treble components. Treble Debugging: 1 - No debugging needed immediately after connection. 2: Modify the treble's high-mid frequency component. 3: Modify the treble's high-mid and high-frequency components. Midrange Debugging: 1: No debugging needed immediately after connection. 2: Modify the midrange's high-mid frequency component to increase or decrease. 3: Modify the midrange's low-mid frequency component to increase or decrease. Bass Debugging: 1: No debugging needed immediately after connection. 2: Modify the bass's low-mid frequency component. 3: Modify the bass's low and mid-frequency components to decrease. Product Parameters: Frequency Point: 1000HZ/7000HZ (meaning it operates below 1000Hz, the midrange functions between 1000Hz and 7000Hz, and the treble operates above 7000Hz). Power: 200W. Impedance: 4-8 Ohm. Circuit: Determined by debugging from 6db/oct to 12db/oct. Color: Red Material: PCB Package Contents: 2 * Audio Speaker Crossover Filters (Other products are not included.) Note: Light and different displays may cause the color of the item in the picture to be slightly different from the real one. The allowed measurement error is +/- 1-3 cm. Our customer service team consists of experienced, professional, and responsible personnel. They will do their best to resolve your issues and demonstrate our sincerity and commitment. Purchasing our products means choosing peace of mind.