Sundown Audio Zv6 12 D2 12" 2500W RMS Dual 2-Ohm Bass Subwoofer

Specifications: 

DC Resistance (Re): 2.0 Ω
Resonance Frequency (Fs): 33 Hz
Equivalent Volume (Vas): 21.1 L
Electrical Q Factor (Qes): 0.52
Mechanical Q Factor (Qms): 3.63
Total Q Factor (Qts): 0.46
Voice Coil Inductance (Le): 0.73 mH
Force Factor (BL): 15.2 NA
Moving Mass (incl. Air Load) (Mms): 291.5 g
Suspension Compliance (Cms): 0.08 mm/N
Sensitivity: 83.4 dB 1w / 1m

Box Recommendations:
Sealed: N/A
Ported: 2.5 cu. ft.
Displacement: 0.23 cu. ft.
Depth: 11.27 in
Outside Diameter: 12.67 in
Cutout Diameter: 11.09 in
Recommended Tuning: 32 Hz
Recommended Port Area: 40 sq. in