VW-0715 15" 4Way Speaker Box 50 oz Magnet Voice Coil :2.5" KSV 2?3"?")Tweeter 7"?" Piezo Frequency Response:45-18 kHz SPL:93dB/W/M RMS Power:120 Watts Impedance:4/8Ohm We have many models of car speaker component kits;profession speaker component kits; Loudspeaker Components and GPS , with high end good quality and best prices . If you are interested in our products ,please feel free to contact us . OEM/ODM service :available