Tapco's series 69 loudspeakers deliver awesome sound to all ears. The 6918 subwoofer contains a huge 18" bass cone which delivers a massive 450 watts of pure bass rumble. Designed by touring sound veterans, this professional quality passive subwoofer is the perfect foundation for your mobile dj sound system. For maximum portability, it is made as compact as possible without sacrificing performance or efficiency. The 6918 subwoofer is made to withstand the rigors of the road, with multi-ply baltic birch wood construction and not cheap plastic or particle board. The 6918 subwoofer features a mackie-designed vented woofers and is optimized to deliver nothing but pure, thumping bass right out of the box in any venue. Both speakon and 1/4" jack inputs are featured as well as throughputs for daisy chaining multiple speakers. Quite simply the tapco 6918 subwoofer is a top end professional rugged speaker ideal for any mobile dj application, at a low end price.