Features Components: 5.25 in Polypropylene coated woofer,.75 in Titanium coated horn loaded tweeter. Built-in InvisiBall mounting hardware*. Weather resistant enclosure and transducers. Readily paintable. 90 x 90 high frequency horn. Overload Protection Circuitry. Sensitivity: 88 dB SPL, 1W, 1m *Patents pending worldwide Specifications Frequency Range : 80 Hz to 16 kHz(-10 dB) Power Capacity : 150 W ContinuousProgram Power75 W ContinuousPink Noise Sensitivity : 88 dB SPL,1 W, 1m Directivity Factor (Q) : 5.3 dB Directivity Index (DI) : 7.2 dB Nominal Impedance : 8 ohms Crossover Frequency : 3.0kHz Frequency LF Driver : 135mm (5.25 in) Polypropylene cone w/ WeatherEdge HF Driver : 19mm (.75 in) Titanium coated polycarbonate Enclosure Material : HIPS (High Impact Polystyrene) Overload Protection : Full-Range power limiting to protect network and transducers Terminations : Spring terminals, accepts banana plug Environmental : Conforms to Mil Spec 810 for humidity, salt spray,temperature& UV. IEC 529 IP-X4 splashproof rating Dimensions (H x W x D) : 236 x 188 x 149 mm (9.3 x 7.4 x 5.8 in) Net Weight (ea) : 2.3 kg (5 lb) Shipping Weight (ea) : 5 kg (11 lb) Included Accessories : Invisiball Assembly Optional Accessories : MTC-25V: For vertical columnar orientation of up to 3 loudspeakers extension of the woofer surround that MTC-25/23H: For horizontal splaying of two speakers. Three brackets array up to six loudspeakers in a 360 array. MTC-28/25CM: Ceiling-mount adapter. MTC-25SSG: Stainless Steel Grille for harsh environments. Available in silver, black (-BK) or white (-WH) MTC-25WMG: WeatherMax Stainless Steel Grille protects against driving precipitation. Available in black or white (-WH) MTC-PC2: Input panel cover protects input terminals in outdoor environments.