| JA-6254A | JA-4254A | JA-5254A | |
| 6.5"2-way rubber edge Paper cone | 4"2-way rubber edge Paper cone | 5.25"2-way rubber edge Paper cone | |
| Voice coil | ASV25.9 (1") | ASV25.9 (1") | ASV25.9 (1") |
| Impedance | 4 Ohm | 4 Ohm | 4 Ohm |
| Magnet | 80*12(8.8oz) | 60*8(2.9oz) | 75*10(6.4oz) |
| Sensitivity | 88dB ±3dB | 85dB ±3dB | 86dB ±3dB |
| Max power | 120W | 60W | 80W |
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