NS10 V.5 D1 | Sundown Audio Night Shade 3000W RMS Subwoofer FEATURES: SPECIFICATIONS: Sundown Audio NS-10 V.5 D1 3000W RMS Dual 2-Ohm Subwoofer DC Resistance (Re): 1 Ω Resonance Frequency (Fs): 39.14 Hz Equivalent Volume (Vas): 10.88 L Electrical Q Factor (Qes): 0.373 Mechanical Q Factor (Qms): 4.559 Total Q Factor (Qts): 0.3449 Voice Coil Inductance (Le): 1.982 mH Force Factor (BL): 27.93 NA Moving Mass (incl. Air Load) (Mms): 414.5 g Suspension Compliance (Cms): 39.88 μm/N Sensitivity: 84.17 dB 1w / 1m