Car Audio Comp General Rules

Basic Terminology Hertz – The hertz (symbol: Hz) is the unit of frequency in the International System of Units (SI) and is defined as one cycle per second. Bandwidth – the span...

Styles and Competitions

SPL METERING: A sound level meter (also called sound pressure level meter or SPL) is used for acoustic measurements. The...

Formats and Classing

MECA has a SPL class calculator to determine your competition class. MECA and other organizations have online rule books containing...