Loudspeaker Biema 12" BML-T1203 250W/4OM FOR PV300B.
Specifications: Nominal diameter 12" Sensitivity 97dB Rated Power 250W Frequency range 50Hz~4.5KHz Voice coil diameter §¶60.5mm BL factor 15.924 Resonance frequency, fs 51Hz D.C.Voice Coil resistance, Re 4 ohm Mechanical Quality Factor, Qms 2.711 Electrical Quality Factor, Qes 0.373 Total Quality Factor, Qts 0.328 Equivalent Air Volume to Cms, Vas 85.023Ltr Mechanical Compliance, Cms 199.826 §№m/n Mechanical Resistance, Rms 2.261m ohm Efficiency, N.(%) 2.834% Effective Surface Area, Sd(©O ) 54.739m©O Product Net Weight N/W 5 kg.