Professional Passive Speaker Crossover Board – A high-quality crossover network designed for 2-way PA speakers. Built with premium air-core inductors, high-voltage capacitors, and power resistors, it efficiently divides audio frequencies between the woofer and high-frequency driver. It improves sound clarity, protects speaker components from unwanted frequencies, and delivers smooth, balanced audio performance. Ideal for speaker repairs, upgrades, and custom loudspeaker projects.