X-18 V.3 D2 - Sundown Audio 18" 2000W RMS Dual 2-Ohm Xv.3 Series Subwoofer Specifications: DC Resistance (Re): 3.80 Ω Resonance Frequency (Fs): 26.4 Hz Equivalent Volume (Vas): 154.0 L Electrical Q Factor (Qes): 0.44 Mechanical Q Factor (Qms): 5.16 Total Q Factor (Qts): 0.40 Voice Coil Inductance (Le): 2.71 mH Force Factor (BL): 25.4 NA Moving Mass (incl. Air Load) (Mms): 449.0 g Suspension Compliance (Cms): 0.08 mm/N Sensitivity: 90.0 dB 1w / 1m Box Recommendations: Sealed: N/A Ported: 7.00 cu. ft. Displacement: 0.23 cu. ft. Depth: 10.25 in Outside Diameter: 18.42 in Cutout Diameter: 16.69 in Recommended Tuning: 32 Hz Recommended Port Area: 112 sq. in
