GMK’s Car Audio Tools & Calculators

Building a car audio system means working with real numbers, not guesses. These free tools help you size your alternator before voltage sag costs you SPL, pick wire gauge that won't melt under load, design a subwoofer enclosure that tunes where you want it, and compare cone area between sub setups. No signup, no upsell - just the math, built by someone who actually competes.