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48A-Series 
| JA-6248A | JA-4248A | JA-5248A | JA-6948A | |
| 6.5"2-way double R rubber edge IMPP cone | 4"2-way double R rubber edge IMPP cone | 5.25"2-way double R rubber edge IMPP cone | 6*9"3-way double R rubber edge IMPP cone | |
| Voice coil | ASV25.9 (1") | ASV25.9 (1") | ASV25.9 (1") | ASV30.5 (1.2") |
| Impedance | 4 Ohm | 4 Ohm | 4 Ohm | 4 Ohm |
| Magnet | 80*15(11oz) | 70*12(6.4oz) | 70*15(8oz) | 100*18(20oz) |
| Sensitivity | 88dB ±3dB | 86dB ±3dB | 87dB ±3dB | 90dB ±3dB |
| Max power | 140W | 70W | 100W | 260W |
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