5.25 Inch 152mm Bullet Full Range Speaker 4 Ohm Dual Magnetic Loudspeaker Unit . PARAMETER: Rated power: 25W . Maximum power: 50W . Rated impedance: 4 OHM .(If you need 8 ohms, please leave me a message , thanks .) Frequency response range: 73Hz-20KHz . Sensitivity: 91dB±2dB . Equivalent volume: 14L . Voice coil diameter: 25mm . Magnet material: Y30 powder magnet . Sound cone material: cotton fiber + bamboo fiber . Application recommendation: full range speaker. Speaker height: 89mm . Maximum outer diameter: 152mm . Screw diagonal: 140mm . Speaker net weight: 1.45KG . Material structure: High-end cast aluminum bracket + Solid phase cone + Imported Class A overhang + Short circuit design + Dual magnetic anti-magnetic design . The treble is delicate, the midrange is thick, and the bass is strong and flexible. From the magnetic circuit system to the cone formula, this full-range speaker has been matched N times in terms of shape, thickness, rigidity, and weight. One of the biggest features of the whole series is that in the environment of the same caliber, sensitivity, and power impedance, the human voice heard by this series unit will be closer to us and the level is clear and sweet. Package: 1pcs.