Product description
Type: Permanent-magnet dynamic loudspeaker
Dimensions : outer diameter 52 mm High 25 mm
Input power: Rated power 3 W;
Nominal Impedance: 4 Ohm15%
Lowest Resonance Frequency : 115Hz20%
Output Sound Pressure Level : 853 dB
Effective Frequency Band: FO~~20KHz
Polarity : When a positive current is supplied from the speaker the terminal marked(+) and a negative to the other terminal the diaphragm must move toward the front.