The BSF-18-4 subwoofer delivers deep, powerful bass with a 2500W max power and 1250W RMS, providing rich low frequencies for enhanced car audio performance. Its 2.5-inch dual voice coil with 4 Ohm impedance offers flexible wiring options and ensures high-quality sound. Built for durability, it features a strong paper cone with reinforced foam edges and a black aluminum basket that handles intense vibrations while maintaining stability and sound clarity.

Additional features include a 90 dB sensitivity, efficiently converting power into sound output, and chrome push terminals for secure connections. The 136oz Y35 magnet structure ensures powerful sound output, while the 18-inch size and press-fit terminals make installation simple. The subwoofer also offers an improved X-Max of 0.6 inches for deeper bass with minimal distortion during high-power use.