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JAC-491/591/691 
| JAC-491 | JAC-591 | JAC-691 | |
| 4'' rubber edge Paper with mica cone | 5.25'' rubber edge Paper with mica cone | 6.5'' rubber edge Paper with mica cone | |
| Voice coil | KSV25.9(1") | KSV25.9(1") | KSV25.9(1") |
| Impedance | 4 Ohm | 4 Ohm | 4 Ohm |
| Magnet | 70(6.4oz) | 70(8oz) | 80(11oz) |
| Sensitivity | 87dB ±3dB | 88dB ±3dB | 89dB ±3dB |
| Max power | 80W | 100W | 140W |
| Tweeter | 25mm(1")Silk dome | 25mm(1")Silk dome | 25mm(1")Silk dome |
- Previous： JAC-692
- Next： JAC490/590/690
