1、Good Sound Quality: Double output, the treble is clear and full, the bass is steady and powerful. 2、4 Ohm Impedance: This bass car speaker has 4‑ohm impedance, can deal with the issue of undersized wires present in cars nowadays. 3、280W Power: Car audio woofer has a maximum power output of 280W peak power, so you can play your favorite songs. 4、Characteristic: High sensitivity, high performance, high frequency response, high sound resolution, clear and detailed description. 5、Advantages: Moisture proof, reduce deformation, high density magnet, strong sound quality, large power. Item Type: Car Audio Woofer Material: ABS+MetalSpeaker Diameter: Approx. 10cm /4inch Horn Cover Diameter: Approx. 5.5in/14cm Impedance: 4Ω Frequency Range (Hz): 80Hz-22KHz Audio Sensitivity: 91dBMinimum Power: 60W Maximum Power: 280W Application Range: Universal for Car Speaker 2 x Speaker Cover 2 x Speaker 8 x Screw 2 x Power Cord