Amazon.com: JBL Club WS1200 12" Shallow Mount subwoofer w/SSI (Selectable Smart Impedance) Switch from 2 to 4 ohm Bundled with Alphasonik Earbuds : Electronics
Pioneer Shallow Mount 12" Subwoofer TS-SW301
Infinity REF1200S 12" shallow-mount component subwoofer at Crutchfield
35 Series 12" 4Ω Single Voice Coil Shallow Mount Subwoofer | MTX Audio - Serious About Sound®
Rockford Fosgate R2SD4-12 12" 1000W 4-Ohm Shallow/Slim Car Subwoofer Sub Pair with Mica-Injected Polypropylene Cone and Integrated PVC Trim Ring : Electronics - Amazon.com
Shallow Series Subwoofer | Pioneer Middle East - Car Stereo, Car Subwoofer, Amplifier
Kenwood Excelon KFC-XW1200F Shallow-mount 12" 4-ohm subwoofer at Crutchfield
Amazon.com: PIONEER TS-SW3002S4 12" 1,500-Watt Shallow-Mount Subwoofer with Single 4ohm Voice Coil : Electronics