Description This speaker has the most modern and easy fitting method ,a quick fastening clasp. it sets new standards in security and easiness .Four screws to mount or dismount and lifting off the grille(with a screwdriver) is all that is necessary. The installation frame is made of high-quality plastic ,the grille of coated steel. The construction is burgle proof and impact resistant. 1,coaxial speaker,provide wide frequency respone range.high quality music speech playback. 2,Grille can be taken off easily,we use magenet to combine grille and outer casing. Specifications Woofer 8-inches coaxial Tweeter 1-inch Silk Dome Frequency Respone(Hz) 50-20K SPL(dB@1W/M) 90 Power(W) 50 Input Method 8-Ohms of your amplifier Install Diameter(mm) 240 Total Diameter(mm) 284 Install Depth(mm) 93.5