The oversized 7.7-inch design of the M6-770X coaxial results in increased efficiency (more output for a given amount of power). Combine that advantage with long excursion and excellent power handling and you have a speaker system truly capable of playing loud and clear in a powerboat at speed. A true 2-way passive crossover network is built into the terminal assembly to protect it from vibration and corrosion. Although M6-770X Coaxial Systems can be used with as little as 40 W per channel, for best audio performance we recommend amplifiers capable of between 40-200 W of continuous power per channel. The 1″ treated-silk dome tweeter renders brilliant highs, and true 2-way crossover ensures that the woofer and tweeter work in perfect concert. You’ll hear all the details of your music, even when the throttle is forward and you’re skimming over the waves. You don’t have to worry about mounting the crossovers because they’re attached to the speaker frames.