Power Reference subwoofers pack a huge punch and have been proven to be one of the most reliable and durable subwoofers on the market. These tried-and true fan favorite subwoofers now feature patented Selectable Impedance Technology making for an even more multifaceted subwoofer than ever before. With sizes ranging from 6.5” to 15”, PR subwoofers have a solution to fit all your needs. Once you hear a Power Reference subwoofer in you’re vehicle, you’ll understand why this line of subwoofers is consistently one of the most popular woofers made by Memphis.