Twelve inch driver and grille assembly for high energy, high ceiling installations such as clubs, bars, restaurants, transportation terminals, concourses, ballrooms and convention center exhibit floors where plenum space is limited. Driver (12P150) Driver is 8ohm 150W 12" with a robust motor structure featuring a 38oz. magnet and 2" voice coil wound on a Kapton former. The compression driver tweeter is coaxially mounted behind the woofer and provides increased power handling with greater efficiency than a conventional dome tweeter. A built-in crossover network with a third order high-pass and second order low pass filter accomplishes proper frequency division between the two drivers. Frequency response is 40Hz-20kHz (+6dB) with 96.5dB sensitivity (avg. SPL). Max SPL 118.3dB (calculated value 1M at driver power rating). Dispersion 70 degrees conical at 2000Hz octave -6dB. Stamped 18-gauge steel frame with corrosion resistant black electrocoat finish. Additional information can be found on spec sheet for driver No. 12P150. Grille (WB-12) Grille is two-piece perforated steel with white powder epoxy finish. 17.25" diameter. White. Compliance & Certification • Made in U.S.A. with global components• UL Listed for General Signaling (UL1480) and rated for use in plenum space (UL2043) only when used with approved backbox