| APM-TEC | Dimensions | Rated Input | Max. Input | Impedance | Pure sound | Polarity | Response Frequency(f0) | Frequency Response | Output S.P.L. | Operating Temperature | Storage Temperature | |
| mm | W | W | Ω | Hz | Hz | dB | ℃ | ℃ | ||||
| APM-L2808M-0.25W | 28 | 0.25 | 0.5 | 8±15%@20℃ | 1.41Vrms,sine wave, no buzzes and battles | Diaphragm moves forward when connected with +, – | 750±20% | f0~7.6K | 86±3at 0.1m/0.1W/1KHz | -20 ~ +60 | -20~ +60 |
