From China Factory Little Speaker 18mm Woofer for Mini Soundbox

• Category: Speaker
• Transmission Mode: Bone Conduction
• Cone: Cloth-edge
• Transducer Principle: Dynamic Earphone
• Style: Head-mounted
• Radiation Mode: Direct Radiation Type
• Model NO.: SF18JD4-2.0HD
• Usage: Expand Volume
• WORD nChannels: 2.1Channel
• Certification: ISO9001, CE, RoHS
• Brand: Jy
• Dimension: 28mm*5.2mm
• Sound Pressure Level: 87 dB (at 1.0W/0.1m with Baffle Avg0.8K,1.0K1.2
• Voice Coil Imp: 4ohm
• Rated(Max.)Power: 1.0(2.0)W
• Transport Package: Paper
• Specification: 18mm*5.5mm
• Trademark: JY
• Origin: China
• HS Code: 85318090
• Production Capacity: 1000000 Pieces/Year

Product Description

1-1	Dimension	φ18×5.5t
1-2	Rated Input Power	1.0W
1-3	Max Input Power	2.0W
1-4	Rated Impedance	4±15% Ω /1KHz/1V
1-5	Resonance Frequency(f0)	850±20% Hz/1V
1-6	Sound Pressure Level	87±3 dB at (AVG 0.8.1.0,1.2,1.5)KHz 0.1M/0.1W
1-7	Frequency Range	200HZ ~ 20KHz
1-8	Total Harmonic Distortion	5%MAX. at 1KHz, 1V
1-9	Flux Density	1.0T
1-10	Operation Test	Must be normal at sine wave and program source1.0W.
1-11	Buzz, Rattle, etc.	Should not be audible at 2.0V sine wave between (200 Hz ~ 5KHz)
1-12	Weight	8g
1-13	Voice Coil Diameter	φ10.25mm
1-14	Magnet (NdFeB)	φ9.6×1.5t mm
1-15	Appearance	Should not exist any obstacle to be harmful to normal operation; damages, cracks, rusts and distortions, etc.