["brand new and high quality\r\n\r\nFeatures:\r\nBass radiator, also known as passive speaker, is used to replace the inverted tube, the subwoofer made with the radiator and the traditional back subwoofer.\r\nWorking principle: It will vibrating up and down when the speaker working, it will produce airflow, this air flow driven diaphragm,to produce low frequency.\r\nLow frequency dive depth and backward , But the sense of speed is significantly faster than the back-type.\r\nTight box advantage, Get rid of inverted pipe mouth to bring the wind noise.\r\nUsed to adjust the , the designer can adjust the overall tone of the speaker.\r\nMake great effect on enhancing the , booster, convenient debugging. Increase the lower potential of the , the sound more excellent.\r\nVibration Membrane only, other accessories demo in the picture are not included!\r\n\r\nSpecification:\r\nMaterial: Rubber + Iron\r\nType: Speaker Accessories\r\nColor: Black\r\nSize: One Size\r\nDiameter：70.0mm/ 2.76in\r\nQuantity: 1 Set\r\n\r\nNote:\r\n1.No retail package.\r\n2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.\r\n3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\r\n\r\nPackage includes:\r\n2 Pcs x Vibration Membranes"]