World's biggest subwoofer - 34" 10,000 watts! In an Indian Fiat Punto - Team-BHP
WORLD'S BIGGEST SPEAKER 80 Inch « Alex-Audio – Professional sound equipment, Acoustic systems. Perfection Sound
The world's biggest subwoofer - CNET
12" Custom Hand Built Subwoofer 5000rms (Team 12) - EM Audio Subwoofers
Shallow subs for big bass in a tight space
Amazon.com: BOSS Audio Systems CXX12 Car Subwoofer - 1000 Watts Maximum Power, 12 Inch , Single 4 Ohm Voice Coil, Sold Individually,Black : Electronics