| JAC-678 | |
| Midwoofer | 6.5'' rubber edge Polymer membrane foaming cone |
| Voice coil | KSV30.5 (1.2") |
| Impedance | 4 Ohm |
| Magnet | 90*15(14oz) |
| Midrange | 3'' rubber edge Polymer Aluminium cone |
| Voice coil | KSV25.5(1") |
| Sensitivity | 91dB ±3dB |
| Max power | 240W |
| Treble configuration | 25mm(1")silk dome |



