This active subwoofer bass package is designed for trunk installation and adds strong low-end performance without replacing the entire factory audio system. It features a 12" sealed subwoofer with a built-in amplifier rated at 245W RMS for clear bass across a 30–150 Hz frequency range. The slim trapezoid enclosure helps save cargo space while maintaining tight, accurate bass response. Adjustable gain, low-pass filter, and phase controls allow better tuning with factory speakers. It is compatible with factory head units and aftermarket stereos and includes wiring hardware for installation.