Changzhou Jiayuan Electronics Co., Ltd.  

Product Name: 28mm China Factory 8ohm 0.5W Mini Circle Speaker Model NO.: SM28TX8-0.5H Brand: Jy Certification: ISO9001, CE, RoHS WORD nChannels: 2.1Channel Usage: Expand Volume, Monitor, High Fidelity Radiation Mode: Indirect Radiation Type Style: Mini Transducer Principle: Dynamic Earphone Cone: Polypropylene and Titanium Edge Transmission Mode: Air-conduction Category: Speaker Dimension: 28mm*5.0h Snr: 89dB Voice Coil Imp: 8ohm Rated(Max.)Power: 0.5(1.0)W Trademark: JY Transport Package: Paper Specification: 20mm*3.9mm Origin: China HS Code: 85318090 Product Description ItemSpecifications1-1Dimensionφ28×5.0t1-2Rated Input Power0.5W1-3Max Input Power1.0W1-4Rated Impedance8±15% Ω /2KHz/1V1-5Coil resistance7.4±10% Ω 1-6Resonance Frequency(f0)500±20% Hz/1V1-7Sound Pressure Level89±3 dB 0.1W/0.1mat (AVG0.6,0.8,1.0,1.2)KHz baffleboard (IEC)1-8Frequency Range300HZ ~ 6000Hz1-9Total Harmonic Distortion5%MAX. at 1KHz, 0.5W1-10Flux Density0.65T1-11PolarityWhen a positive DC Current is applied to the voice coil terminal marked +or red ,the diaphragm shall move forward1-12OperationTestMust be normal at sine wave and program source 0.5W. 1-13Buzz,Rattle,etc.Should not be audible at 2.0V sine wave between(300 Hz ~ 6kHz)1-14Weight6.0g1-15Voice Coil Diameterφ10.4 mm 1-16Magnet (NdFeB)φ9.5×1.5t mm1-17AppearanceShould not exist any obstacle to be harmful to normal operation;damages,cracks,rusts and distortions,etc.1-18Operation temperature-20ºC~+60ºC1-19Storage temperature-30ºC~+70ºC