CQRobot painstakingly deploys this passive speaker small speaker for the Makers and electronic enthusiasts, this small passive speaker with 2.54mm Dupont interface, the internal resistance is 4 ohms, the power of it is 3 watts. Strip size, with mounting screw, suitable for all kinds of sound source fabrication, the sound is clear and melodious without distortion. TECHNICAL SPECIFICATIONS - Resonance Frequency: 500 Plus/Minus 20% Hz. - Impedance: 4 Ohm Plus/Minus 15% at 1 khz 1.0V. - Power: rated power / maximum power 2.0W / 3.0W - Sensitivity: 82 Plus/Minus 3dB (1w / 0.5m) at 1.0K Hz. - Effective frequency range: FO to 15 KHz. - Distortion factor: Less Than 5% MAX. (AT 1.0KHz 0.5W 0.5M) - Polarity: When a positive DC current is applied to the terminal marked +, the diaphragm shall move forward. - Buzz & rattle test: 4.0V FO to 15KHz. - High Temperature Storage Test: 80 Degree Celsius Plus/Minus 5 Degree Celsius - 96 Hours. - Low Temperature Storage Test: -40 Degree Celsius Plus/Minus 5 Degree Celsius - 96 Hours. - Magnet: Nd-Fe-B, 12.5mm * 2mm. - Size: 70mm * 31mm * 16mm. - Screw hole distance: 24mm * 63mm. - Interface: 2.54mm Dupont Interface. - Interface cable length: 40cm. - Total weight: 24g. SHIPPING LIST 2 * Passive Speaker 3 Watt 4 Ohm(2.54mm Dupont Interface) See more

Compatible With Arduino, Robot, Raspberry Pi, Advertising Machine, Game Machine, Integrated Machine Special Speaker etc, Projects. Size: 70 mm * 31 mm * 16 mm / 3.1 inch * 1.2 inch * 0.63 inch (L* W * T). Impedance: 4 Ohms Plus/Minus 15%. Power: Rated Power / Maximum Power 2.0W / 3.0W.