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Earthquake's FF12 subwoofer system was designed to offer consumers budget- and volume-optimized subwoofer system solutions. These units score high marks with custom home installers as they work fantastically in front firing applications. A 12-Inch woofer is powered by a 400-watt, class AB amplifier. Automatic signal detection circuitry saves power and turns the sub on only when it senses a signal. With their small footprint, wide variety of applications, affordable price, and incredible output, the FF12 is an easy choice for both consumers and installers alike.