A Ford F-250 SPL (Sound Pressure Level) truck equipped with nine Pioneer 12-inch subwoofers reached an incredibly noisy 173.3 Decibels and set a world record in its category at the 2003 dB Drag ...

This is the manufacturer's smallest-ever micro-subwoofer for automotive ... connect 12-volt power and either line- or speaker-level audio and Pioneer says you're ready to go.