The JL Audio M3 Series 7.7" Enclosed Tower Coaxial System w/ Sport Grille is engineered for high-performance sound in tower-mounted applications. These 7.7-inch coaxial drivers deliver clear, loud audio, perfect for reaching well beyond your boat.• Powerful midbass output in open-air applications• Wide range of tubular or surface-mounting options• Exceeds international standards for salt fog and UV exposure• 2-Years Warranty• Mounting Clamps Required (Sold Separately)• Sold as a pairSpecsContinuous Power Handling (RMS): 70wRecommended Amplifier Power (RMS): 20 - 140w/ chSystem Efficiency: 90.5 dB @ 1 W / 1 mSystem Nominal Impedance: 4 ohmSystem Frequency Response: 55 Hz - 25 KHz ± 3 dB Waterproof for marine durability 25-140W amplifier range for optimal performance Professional installation recommended | JL Audio M3 Series 7.7" Enclosed Tower Coaxial System w/ Gloss White Sport Grille