* Balanced Metal Dome .75-inch CV Tweeter * Piezo .75-inch Add-On Tweeter Kit * Power Handling: 350W MAX . * Woofer / Tweeter (in. mm) 6 X 9"(152mm X 203.2mm) /2.25"(57 1mm)/0.5 (12.7mm). * Mounting Diameter: 5.94" (151mm) x 4.75" (120.5mm). * Mounting Depth: 3.4" (87.5mm). * Frequency Response: 50Hz-18Khz +/-3dB. * Sensitivity: 94dB. * Vent Dimensions: Curvilinear Poly Cone.