Bi-directional high and low frequency divider for bookshelf enclosures. Designed to split audio cleanly between high and low drivers, with crossover options optimized for compact rooms and near-field listening. Key features and benefits - Versatile adjustable switches for high and low frequencies: Unlike traditional crossovers, this unit provides adjustable controls to tailor the crossover to your specific speakers and setup. - Capacitor-based tuning: Uses a capacitor in series or parallel to adjust low and high frequency response. The capacitor also limits ultra-low frequencies to suit your system. - Smooth, clean low-end with added capacitor: An additional capacitor softens the low-frequency response, delivering natural voice reproduction with minimal coloration or clouding. - Compact and compatible with bookshelf systems: Built for bookshelf speaker enclosures, making it suitable for desks, shelves, or small living spaces. - Ideal listening environments: Delivers clear, articulate sound in bedrooms, offices, or tea rooms. Performs well at close distances (approximately 0.5 to 2 meters) and moderate listening levels. - Practical crossover design: Suited for configurations where crossover frequencies are above 200 Hz, providing flexible integration with a variety of drivers. Practical use scenarios - Upgrade existing bookshelf speakers in a small room to achieve clearer highs and controlled bass without listener fatigue. - Fine-tune a near-field setup on a desk or shelf for long, comfortable listening sessions. - Customize multiple speaker pairings by dialing in high/low balance to suit different music styles or room acoustics.