Woofer Size 160mm 6.5in Diaphragm PP Cone Surround Cloth Basket Steel : Black Magnet Ferrite 60 t10 Tweeter Size 25mm 1in Diaphragm PEI Balanced Dome Woofer (Unit) Width (w Gr) 170.0mm 6-11/16in Width (w/o Gr) 159.8mm 6-5/16in Height (w Gr) 170.0mm 6-11/16in Height (w/o Gr) 159.8mm 6-5/16in Cutout Diameter 123.5mm 4-7/8in Tweeter Height 8.6mm 5/16in Depth (w Gr) 70.1mm 2-3/4in Depth (w/o Gr) 51.6mm 2-1/16in Mounting Depth 43.0mm 1-11/16in WEIGHT with Grille (pc.) 450g 1.0lbs without Grille (pc.) 380g 0.8lbs Gross Weight 1,050g 2.3lbs Weight of Magnet 102g 0.4oz POWER HANDLING Peak Power 300W Rated Power 30W SENSITIVITY 92db / W at 1m FREQUENCY RESPONSE 35Hz to 22Hz Impedance 4ohms CROSSOVER FREQUENCY ACCESSORY Grille.