Lowther PM7A 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 | 55.907 Ltrs |
| Suspension Compliance | Cms | 892.762u M/N |
| Mass of Cone | Mmd | 11.0 g |
| Mass of Moving Parts | Mms | 12.75 g |
| Force Factor | Bl | 9.106 T-M |
| Mechanical Q Factor | Qms | 4.338 |
| Electrical Q Factor | Qes | 0.328 |
| Total Q Factor | Qts | 0.305 |
| Voice Coil Inductance @ 1 kHz | Le | 103.671 uH |
| Reference Efficiency | No | 1.729% |
| Sound Pressure Level | SPL | 94.397 Db |

VCAP CuTF 0.1uF / 600V
Mundorf Supreme Silver Gold Oil 0.1uf / 1000V
Cardas Audio S-DIN
Trở AMTRANS AMRG - 2W (chân vàng) - 2K
Tụ Jantzen Alumen Z-Cap 2.2uf / 100VDC
Loa Woofer SEAS H1215-08 CA18RNX
Mundorf MLytic HV 10uf/ 500V - Axial 


