- Fully sealed design provides indoor speaker sound for the great outdoors - Active driver pressure-coupled to racetrack Planar Low Bass Radiator for rich low end - Rugged PolyStone™ enclosures ensure a great performance even in the elements - Galvanized steel mounting brackets give 360-degree placement flexibility - Tweeter: 1" - Mid/Woofer: 5.25" - Bass Radiator: 5" - Total Frequency Response: 45 Hz - 30 kHz - Nominal Impedance: 8 ohms - Max Sensitivity (1W@1m): 91 dB