If you are looking for speakers that are impervious to water, the Boss 4-Way Wake Tower Speakers are an ideal choice. These marine tower speakers feature a durable construction with a metallic injection cone, aluminum voice coil, and metal grilles. The tough, long-lasting construction makes the Boss Tower Speakers a great choice among marine speakers. The Boss 4-Wake Wake Tower Speakers offer superb performance in the toughest of weather conditions. With an impedance of 4 ohm and peak power handling at 550W, these marine tower speakers deliver high-quality sound to give you an enjoyable boating experience. The speaker in the 4-Way Wake Tower Speakers measures 6" long x 9" wide. The entire unit measures 14.1" long x 13.5" wide x 11.9" high. Boss 6" x 9" 4-Way Wake Tower Speaker: * Peak power handling: 550W * Frequency response: 40Hz-20kHz * Impedance: 4 ohm * Sensitivity: 95dB * Cone material: metallic injection * Aluminum voice coil * Mylar dome tweeter measures 2" x 1" * Metal grilles