NAKAMICHI NSW_X1204D4 12" SUBWOOFER

SPECIFICATIONS Model No.: NSW-X1204D4 Nominal Diameter: 12" (31.3cm) Mounting Depth: 3.82" (97mm) N-Power: 400 watts Peak Power: 4000 watts Nominal Impedance: 4Ω + 4Ω Frequency Response: 32 - 550 Hz Sensitivity (SPL/1W/1m): 87±3dB Free Air Resonance (Fo): 32 Hz Suspension Compliance (Cms): 74.5 uM/N Moving Mass (Mms): 179.8 g Mechanical “Q” (Qms): 44.15 Electrical “Q” (Qes): 1.136 Total Speaker “Q” (Qts): 0.904 Equivalent Volume (Vas): 28.9 Ltr DC Resistance (Re): 3.3Ω + 3.3Ω Effective Piston Area (Sd): 522.79CM^2 Force Factor (BL): 8.446 Reference Efficiency (No): 0.20% Voice Coil (V.C.): Φ50.5mm, ASC Magnet Mass: 52 Oz (1474g) Net Mass (1pc): Approx. 4.8 kg