Electro-Voice EVF-1181S-FGB Installed Subwoofer

The EVF-1181S-FGB is a 400-watt low-frequency loudspeaker with one 18-inch driver. Its black enclosure has a fiberglass finish for integration with an installed sound system. An external crossover is required to divide the audio signal between this bass cabinet and the full-range loudspeakers. External amplification supplies the speaker power.