2pcs 1.5" 4Ohm 3W Full Range Audio Speaker Stereo Woofer Loudspeaker
characteristic sensitivity of loudspeaker : 83±3dB
resonance frequency : 320Hz±20%, Insulation Resistance : 10MΩ
nominal impedance : 4Ω±15%, input-power rating : 2W
rated frequency range : 0-20KHz, distortion factor : maximum 5%