The EKX-18S from Electro-Voice is a passive subwoofer that features a robust wooden enclosure with EVCoat finish. As a result, this speaker guarantees immense durability. It exhibits a metal grille reinforcement bar, which adds a great deal of sturdiness to the overall construction. The M20 threaded pole mount plate ensures that the speaker stays firmly in position by eliminating the risk of wobbling. The speaker covers a frequency range of 35 to 300Hz. The EKX-18S is equipped with signal-synchronized transducers for excellent coverage and high sound quality even at high sound pressure levels. In addition, this speaker exhibits large slot ports for low distortion and superior bass extension.