Jumper A and B control the bass audio range. Jumper A sets the lower limit, while Jumper B sets the upper limit. Excessive bass can cause speaker distortion. To reduce distortion, remove the jumper cap from Jumper A to limit ultra-low bass frequencies. Removing the cap from Jumper B increases bass; installing the cap decreases bass. Jumpers C and D control the treble range. With both caps installed, treble output is maximum. With only the cap on Jumper C, treble is reduced. With only the cap on Jumper D, treble is further reduced. With both caps removed, treble output is disabled. To use the splitter board: 1. Connect according to the labeled terminals (Treble, Low, Input). 2. Connect to your speaker. 3. Ensure proper enclosure sealing. 4. Play audio and adjust jumpers for optimal sound. Typical configuration: - Use Jumper A; leave Jumper B uninstalled unless needed. - Adjust Jumpers C and D based on preferred treble level. - Common combinations: • A + D: Enhanced bass response • A + C: Balanced bass and clear treble • A + C + D: Clear bass and treble, with slight treble emphasis • A + B + C + D: Emphasized midrange frequencies - If bass is excessive, remove the cap from Jumper A. Rated power: ≤ 400W Impedance: 4–16 ohms Frequency response: Adjustable via jumpers Color: Red PCB Material: ABS plastic + metal components Dimensions: 7 × 5 × 2.5 cm Package includes: • 1 × Frequency Divider Board Note: Color may vary slightly due to lighting and screen settings. Dimensional tolerance: ±1–3 cm.