| Model | M15D2 / M15D4 |
| Type | Subwoofer |
| Size | 15 inch |
| Voice coil size | 2.50 inch |
| Cone | Paper |
| Magnet | Ferrite |
| Voice coil wire | Copper |
| Surround | Foam |
| RMS Power | 350 W |
| MAX Power | 1000 W |
| Frame | Steel |
| Impedance | 2+2 / 4+4 Ohm |
| SPL | 88.28 / 87.38 dB |
| Fs | 34.10 / 33.40 Hz |
| Qts | 0.63 / 0.75 |
| BL | 16.70 / 20.55 |
| Re | 1.4+1.4 / 2.8+2.8 |
| Vas | 75.36 / 78.08 L |
| Xmeh | 28.00 / 28.00 mm |
| Xmax | 14.00 / 14.00 mm |
| Mounting depth | 6.85 inch (174.0 mm) |
| Cut-out dimension | 13.96 inch (354.5 mm) |
| Gross weight | 16.53 lb (7.50 kg) |