Lowther DX3 Drive Unit
| DC Resistance of Voice Coil | Re | 7.4 ohms |
| Free Air Resonance | Fo | 45 Hz |
| Emission Piston Area | Sd | 0.021M² |
| Equivalent Volume Suspension | Vas | 52.460 Ltrs |
| Suspension Compliance | Cms | 837.732 u M/N |
| Mass of Cone | Mmd | 11.0 g |
| Mass of Moving Parts | Mms | 12.75 g |
| Force Factor | Bl | 10.985 T-M |
| Mechanical Q Factor | Qms | 3.533 |
| Electrical Q Factor | Qes | 0.239 |
| Total Q Factor | Qts | 0.224 |
| Voice Coil Inductance @ 1 kHz | Le | 35.511 uH |
| Reference Efficiency | No | 2.449% |
| Sound Pressure Level | SPL | 95.908 Db |

Lowther PM5A - Aluminium Voice Coil 8R 

