Summary
The 2025 Dueling Demo Rulebook by MECA, Inc. outlines the rules and regulations for the Dueling Demos competition, which evaluates audio systems in vehicles based on various criteria.
Competition Classes: There are 10 Dueling Demos classes, including Street, Modified Street, Modified 1, Modified 2, Extreme, Open, Motorcycle 1, Motorcycle 2, x, and MECA Kids.
Judging Criteria: Competitors are judged on Loudness, Impact, Clarity, 360 Sound, Song Choice, and Showmanship, with a total possible score of 100 points.
Vehicle Requirements: Vehicles must be safe, legal, and meet MECA SPL/SQL safety standards. All equipment must be securely mounted, and competitors must wear hearing protection during demos.
Owner Requirements: Competitors must own the vehicle used in the competition, verified by driver’s license and vehicle registration. A vehicle cannot be used by more than one competitor at a show.
Street Class Rules: Street class vehicles must have speakers in factory locations, with a maximum of 12 speakers excluding subwoofers. No external power supplements or free-standing equipment are allowed.
Modified Street Class Rules: Modified Street allows door speaker build-outs and custom A-pillar trim, with a limit of 24 speakers excluding subwoofers. Walled vehicles are permitted.
Modified and Extreme Classes: Modified classes are divided into M1 (40 speakers) and M2 (80 speakers), while Extreme class has no speaker limit. All equipment must be securely mounted.
Single Position DD: Single Position DD includes Street, Modified, and Extreme classes with judging based on loudness, impact, clarity, musical display, and showmanship, excluding 360 sound.
Please scroll down to the bottom of the below rule book and use the controls to view the pdf file.
2026-MECA-Dueling-Demo
