3-Way, Full-Range Enclosed Speaker System, Gloss White, Left-Side (250 W, 4 Ω) This amazing large-format speaker system combines the power of our maximum-performance 10-inch marine subwoofer driver with our 7.7-inch coaxial speaker to deliver true full-range, high-output performance in open-air marine installations. It is ideal for larger vessels and party decks where quality, high-output sound is needed. The enclosure actually consists of two individual chambers. The larger chamber houses the subwoofer and is precisely tuned to deliver outstanding quality sub-bass response in an open-air boat installation. Loaded inside, is our maximum-performance M10W5 10 in. subwoofer driver. The smaller chamber houses our M770-CCX maximum-performance coaxial.