| Notes | Parameter | Before burn-in | After burn-in | Unit | | Nominal size | 5¼ | [inch.] | | Nominal impedance | 4 | [ohm] | | Recommended max. upper frequency limit | 4 | [kHz] | 1, 3 | Sensitivity, 2.83V/1m (average SPL in range 200 - 1,000 Hz) | 89.5 | [dB] | 2 | Power handling, short term, IEC 268-5, no additional filtering | | [W] | 2 | Power handling, long term, IEC 268-5, no additional filtering | | [W] | 2 | Power handling, continuous, IEC 268-5, no additional filtering | 55 | [W] | | Effective radiating area, Sd | 95 | [sq.cm] | 3, 6 | Resonance frequency (free air, no baffle), Fs | 62 | | [Hz] | | Moving mass, incl. air (free air, no baffle), Mms | 10.0 | [g] | 3 | Force factor, Bxl | 5.2 | [N/A] | 3, 6 | Suspension compliance, Cms | 0.66 | | [mm/N] | 3, 6 | Equivalent air volume, Vas | 9.0 | | [lit.] | 3, 6 | Mechanical Q, Qms | 8.0 | | [-] | 3, 6 | Electrical Q, Qes | 0.46 | | [-] | 3, 6 | Total Q, Qts | 0.44 | | [-] | 4 | Voice coil resistance, RDC | 3.2 | [ohm] | 5 | Voice coil inductance, Le (measured at 10 kHz) | 0.23 | [mH] | | Voice coil inside diameter | 32 | [mm] | | Voice coil winding height | 11 | [mm] | | Air gap height | 5 | [mm] | | Magnet weight | 400 | [g] | | Total unit net weight excl. packaging | 1.08 | [kg] | 3, 5 | Krm | 0.13 | [mohm] | 3, 5 | Erm | 0.99 | [-] | 3, 5 | Kxm | 4.2 | [mH] | 3, 5 | Exm | 0.71 | [-] | |