Hubei Yiming Electronics Technology Co., Ltd.
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| Speaker Size | 4 inch |
| Rms | 40W |
| Peak power | 80W |
| Independence | 4 Ohms |
| sensitivity | 89dB(1W/1M) |
| frequency response | 90-20Hz |
| Cone material | carbon fiber |
| Voice Coil | 30mm |
| Fo | 120Hz |
| Qms | 5.67 |
| Qes | 0.98 |
| Qts | 0.83 |
| Vas | 2.3L |
| Mms | 4.4g |