Helix Blue B12WDVC4 12" subwoofer with dual 4-ohm voice coils at Crutchfield
12" Sub Subwoofer Bass Car Audio 5500W 4 Ohm Dual Voice Coil Bass SQL car Audio | eBay
Baskytarové reproduktory
Audiopipe TSCVR12 TSCVR Series 12 inch Subwoofer - Dual 4 ohm voice coils
XL-1244D 12" Subwoofer
5 Core 12" inch Subwoofer Replacement Premium High Powered DJ Subs RMS 150W Peak 1500W, 8 Ohms Loudspeaker Wide Range Woofer with Voice Coil, Heavy Bass Car Audio SP 12135 - Walmart.com
H YANKA 12 Inch Subwoofer - 12 Inch Paper Cone Subwoofer Car Audio, Black Steel Basket, Dual Voice Coil 4 Ohm Impedance 12 subwoofer, 1600W MAX Power and Foam Surround for Car Subwoofer Speaker