Purpose engineered and built for real marine duty, M6 coaxial systems deliver maximum audio performance in any open air boating environment. The long excursion woofer design and excellent power handling make your music come through loud and clear at speed or at anchor. A 0.8 in pure silk dome tweeter, specially treated to withstand the marine environment, handles the high frequency duties. You will appreciate the clean, articulate high frequency response of the M6 dome tweeter, especially at higher volume levels. A true 2-way passive crossover network is built into the terminal assembly to protect it from vibration and corrosion. Although M6-650-X coaxial systems can be used with as little as 25 W per channel, for best audio performance we recommend amplifiers capable of between 75 to 150 W of continuous power per channel.