| Brand | Fostex |
| Model | FE103A-VB |
| Kind | Full range |
| Nominal diameter (mm) | |
| Impedance (Ω) | 8 |
| Rated power (W) | 5 |
| Maximum power (W) | |
| Sensitivity (dB, 1 W/1 m) | 87.5 |
| Frequency response | |
| Resonance frequency, fs (Hz) | 85 |
| DC resistance, Re (Ω) | 6.7 |
| Mechanical Q, Qms | 5.82 |
| Electrical Q, Qes | 0.6 |
| Total Q, Qts | 0.55 |
| Equivalent volume, Vas (l) | 4.55 |
| Effective piston area, Sd (cm²) | |
| Moving mass, Mms (g) | 2.66 |
| Force factor, BL (T·m) | 3.97 |
| Voice coil inductance, Le (mH) | 0.1 |
| Linear excursion, Xmax (mm) | |
| Excursion limit, Xmech (mm) | |
| Voice coil diameter (mm) | 20 |
| Cutout diameter (mm) | 93 |
| Mounting depth (mm) | |
| Cone material | |
| Magnet material | |
| Weight (kg) | 0.6 |
