Features 1.Premium Voice Coils: Can handle extreme heat and maintain their structural integrity, which means a long life for your speakers. Advanced voice coil heatsink design for better heat dissipation. 2.Clear Sound: The unit has 90dB sensitivity and a 4 ohm impedance rating to compensate for the undersized wires in many of today's cars. Distortion is reduced, so you can enjoy crisp, clear sound. 3.180W Maximum Power: This high bass 6.5inch coaxial car speaker package system has a maximum peak power output of 180W, so you can play your favorite tracks with as much style as you want. 4.All Round Stereo Sound: With a frequency response of 50Hz?20KHz, you can perfect your current car speaker system and achieve all round stereo sound reproduction. 5.High Performance: Premium, durable and innovative design blends loud speakers with high power drivers. specificationItem Type: Coaxial Car Speaker Material: Magnet, Metal Iron Model: TS 650 Rated Power: 55W x 2 Maximum Power: 180W x 2 Impedance: 4 Sensitivity: 90dB Frequency Range: 50Hz-20KHz Application: For All Car Audio Systems PackageList 2 x Tweeter 2 x Subwoofer 4 x Cable 2 x Speaker Panel 8 x Screws