Resonant frequency fS 32 HzElectrical Q QES 0.37 Mechanical Q QMS 3.16 Total Q factor QTS 0.33 Suspension equivalent air volume VAS 34.4 litresDC resistance RE 4 ΩVoice coil inductance LE 2.63 mHForce factor B·l 24 T·mSuspension mechanical resistance RMS 16.7 N·s/mSuspension mechanical compliance CMS 94 µm/NMoving mass MMD 253.8 gMoving mass (including airload) MMS 262.1 gSurface of the diaphragm SD 506.9 cm²Effective diaphragm diameter Ø 25.4 cmEfficiency η₀ 0.3 %Efficiency bandwidth product EBP 86