Focal Sub 10 Slim 10" shallow-mount 4-ohm voice coil subwoofer at Crutchfield
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HIPPOXL102 - 10 inch Subwoofer | 2000 Watts RMS Dual 2 Ohm 3" V.C. Mega
10 Inch Subwoofers MMATS Pro Audio Monster 10 Car Audio Subwoofer
65 Series 10" 4Ω Dual Voice Coil Square Subwoofer | MTX - Serious About Sound®