Core 18 subwoofer is an unpowered speaker with an 18-inch woofer capable of producing frequencies down to 36Hz. The core 18 cabinet is available in a black textured wood cabinet, integrated handles on each side and formed metal mesh 16 gauge grill giving the core 18 a sleek design that can be used in theaters, clubs, churches and other venues. With power handling of 600W at 8 ohms the core 18 is the perfect portable or installation subwoofer. The pole mount socket on the top of the core 18 fits standard 1-3/8-inch stand pole which allows for mounting the core 12, core 15 or LA4 speakers above the subwoofer creating a full range 2-way sound system with high fidelity and unmatched low end. The back input panels of the core speaker’s features two twist-lock plugs and two terminal barrier strip. The two input jacks are wired in parallel to provide a convenient way to daisy chain multiple speakers to single amplifier channel.