Amazon.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 12 inch Competition Subwoofer : Electronics
Alphasonik Venum 800 Series 12" Car Audio Subwoofer | Alphasonik
Terminator 12" Series 4Ω Subwoofer | MTX Audio - Serious About Sound®
HFX12D4 HFX 12 Inch 4 Ohm DVC Subwoofer | Hifonics
Alpine S-Series 12" Dual-Voice-Coil 4-ohm Subwoofer Black S-W12D4 - Best Buy
DS18 EXL-XX12.2DHE 4,000W Max Dual 2-ohm 12" Subwoofer
JBL Stadium 122SSI Stadium Series 12" component subwoofer with switchable 2- or 4-ohm impedance at Crutchfield
Sony XSW124ES Mobile ES 4 Ohm Subwoofer
Kenwood Road Series 12" Single-Voice-Coil 4-Ohm Subwoofer Black KFC-W120SVC - Best Buy
Focal Sub 12 Dual 12" Subwoofer, Dual 4-ohm 300w Rms - 600 W Max : Target
S-12T Thin Mount 12" Subwoofer
JL Audio 12W0v3-4 W0v3 Series 12" 4-ohm subwoofer at Crutchfield
Jensen J12W 12-inch 1200 Watts Peak Power Polypropylene Subwoofer with Reinforced Stamped Steel Basket and 40oz Magnet - Walmart.com
Pioneer TS-1200M 12" - 1400 W Max Power, Single 4Ω Voice Coil, IMPP™ cone, Rubber Surround | Component Subwoofer - Walmart.com