M-Series 8.8-inch Marine Cockpit Coaxial System for Infinite-Baffle Use (125 W, 4 Ω) - Titanium Sport Grille. The same principle that makes our 7.7-inch marine speakers dominate over conventional 6.5-inch designs is delivered in a more powerful dose in our M880-CCX 8.8-inch coaxials. These 8.8-inch diameter monsters offer significant performance advantages over our 7.7 inch models, and a huge advantage over conventional 6.5 inch marine coaxials. Thanks to 36% more cone area and almost double the excursion capability, the M880-CCX's are capable of +6 dB greater low frequency output than our M770-CCX 7.7-inch coaxial systems! The bass is so impressive that the M880-CCX can be used without a subwoofer while still packing a very serious low-frequency punch.