Sanctioning bodies and leagues that organize car audio competitions worldwide. From SPL battles to sound quality judging, find events from the organizations that make it all happen.
Hosts 100-150+ events per season with competition formats for cars, trucks, and motorcycles. Known for fair competition through classification systems and their motto: "Fun, Fair, Loud & Clear."
Formed in 1987 from the merger of Alpine's Car Audio Nationals and NACA. Provides judging standards and team guidance for sound quality, installation quality, and SPL competitions worldwide.
Bass Wars competition organization featuring SPL, Port Wars, Hot Seat, and Death Match formats. Classifies competitors by Bass Value (speaker + port surface area).
Founded by Wayne Harris, dBDRA pioneered head-to-head SPL competition. Has hosted over 25,000 events worldwide since 1998 across 40+ countries with formats including dB Drag Racing, Bass Race, Top Dog, Psychlone, and Bagger Beatz.
United States Autosound Competition International - The Loudest Sport on Earth. Founded in the 1980s, offering SPL, Music, Demo, and SQ competitions worldwide.
North American Decibel League - Regional car audio competition league with events across North America since 2015.
North American Decibel League — Test Org
North American Decibel League — Test Org
North American Decibel League — Test Org
North American Decibel League — Test Org
North American Decibel League — Test Org
North American Decibel League — Test Org
North American Decibel League — Test Org
North American Decibel League — Test Org
Musical SPL competition league focused on sustained acoustic performance
Musical SPL competition league focused on sustained acoustic performance
National Sound Pressure League
Termpro SPL competitions