polk audio - a pair of db652 6.5" coaxial and a pair of db402 4" speakers - bundle includes 2 pair polk audio polk audio - a pair of db652 6.5" coaxial and a pair of db402 4" speakers - bundle includes 2 pair perfect for anything: cars, trucks, boats atvs & more. everything you love about polk’s dynamic balance technology—that rich, clean, full-range sound—is built into the marine-tough, yet ruggedly sophisticated, db+ series. and with its universal fit, it can be installed in any vehicle: automobiles, motorcycles, boats, atvs—you name it. polk db652 6.5" coaxial speakers with marine certification specifications: driver enclosure type - marine certified cut out shape - round cut out diameter - 5" (12.7 cm) full-range mounting depth - top mount 1.77" (4.5 cm) total frequency response - 40 hz → 22 khz nominal impedance - 4 ohms sensitivity (1 watt @ 1 meter) - 92 db continuous power handling (rms) - 100w peak power handling - 300w polk db402 4" coaxial speakers with marine certification specifications: driver enclosure type - marine certified cut out shape - circle cut out diameter - 4.09" (10.39 cm) full-range mounting depth - top mount 1.79" (4.55 cm) total frequency response - 60 hz → 22 khz nominal impedance - 4 ohms sensitivity (1 watt @ 1 meter) - 90 db continuous power handling (rms) - 45w peak power handling - 135w high performance upgrade - upgrade from your oem speaker system toward a bigger, fuller, high-performance sound. marine certification - the db+ series is ip55 rated so it’s dirt- & water- resistant. it also has been tested for salt-fog, uv and humidity. universal fit - enjoy a simple drop in installation for any vehicle including cars, boats, atv’s -- you name it. this quick and easy experience also ensures a faster installation process so you can get back to what matters with our great sound always along for the ride.