2) MB Quart DK1-169 6x9" 180W Discus Speakers + 2) DK1-116 6.5" Car Speakers Pair of MB Quart DK1-169 6x9" 180 Watt 2-Way Car Speakers/Aluminum Dome Tweeter. 180 Watts Peak Power Total / 90 Watts Peak Power Per Speaker. 90 Watts RMS Total / 45 Watts RMS Per Speaker Stamp-cast deep drawn steel baskets. Aluminum dome tweeters. Euro-DIN chassis for simple installation. Polypropylene mid-woofer cone Rubber speaker surround. Cut out diameter: 5.91" x 8.64". Top-mounting depth: 3.21". Impedance: 4-Ohms. Crossover Slope: 12db Pair of MB Quart DK1-116 6.5" 140 Watt 2-Way Car Speakers/Aluminum Dome Tweeter. Stamp-cast deep drawn steel baskets. Aluminum dome tweeters. Euro-DIN chassis for simple installation. Polypropylene mid-woofer cone Rubber speaker surround. Cut out diameter: 5.72". Top-mounting depth: 2.61". Impedance: 4-Ohms. Crossover Slope: 12db