1Dual output, clear and full treble, smooth and pleasant listening, calm and powerful bass, strong explosive. 2Using aerospace magnets, full of power. High sensitivity, high speech resolution, and the detailed description is sufficiently clear. 3Moistureproof, strong horn sound performance. High frequency response, strong voice performance and excellent sound quality. 4Strong and solid basin, speaker material pragmatic, uniform thickness of the iron frame, to ensure a sound and thick sound. 5The symmetrical and regular horn terminal provides symmetrical terminals, which simplifies the installation steps and effectively inserts correctly. Aluminum surface, high driving efficiency. Item Type: SpeakerMaterial: Metal Size: Approx. 10.16cm/4in Impedance: 4 Frequency Range: 35hz-20khz o Sensitivity: 92dB Output Power: 150W Voltage: 12V Signal to Noise Ratio: 91db Application: Universal 2 x Speakers