15mm Portable Internal Speaker for Mobile Phone
Specification
| Dimension | 11×15×2.5t |
| Rated Input Power | 1W（in 1cc box） |
| Max Input Power | 1.2W （in 1cc box） |
| Rated Impedance | 6±20% Ω /2.0KHz/2.45Vrms |
| Coil resistance | 5±20% Ω |
| Resonance Frequency(f0) | 650±20% Hz in free air at 1.0Vrms/10cm. 950±20% Hz while testing in 1cc box at 2.45Vrms/10cm |
| Sound Pressure Level | 93±3 dB SPL /2.45Vrms/10cm at 2KHz in 1cc box |
| Frequency Range | f0HZ ~20KHz |
| Total Harmonic Distortion | ≤10%@1KHz, 2.45Vrms/10cm (in 1cc box) As shown in fig(3) |
| Flux Density | 0.4T |
| Polarity | When a positive DC Current is applied to the voice coil terminal marked +or red ,the diaphragm shall move forward |
| Operation Test | Must be normal at sine wave and program source 1W.（in 1cc box） |
| Buzz, Rattle, etc. | Must be free audible noise (buzzes and rattles)(200Hz 2KHz frequency range ,input level up to 2.45Vrms, while testing in 1cc box.) |
| Weight | 1.5g |
| Appearance | Should not exist any obstacle to be harmful to normal operation; damages, cracks, rusts and distortions, etc. |
| Storage temperature | -40℃~+85℃ |
| Operation temperature | -20℃~+70℃ |