Ultimate Car Audio App

Box Calculators, Wiring Tools & Subwoofer Design. Design the perfect subwoofer enclosure with advanced car audio calculators.

Designed for real car audio enthusiasts

Built by people who actually design and build subwoofer enclosures.

Accurate results you can trust

Calculations are based on proven enclosure design formulas used by installers and hobbyists.

Save time when planning builds

Quickly test enclosure ideas before cutting any wood.

For DIY builders, installers, bass enthusiasts

Ultimate Car Audio was built to give subwoofer builders accurate tools for designing enclosures and wiring systems. Instead of using multiple calculators across different websites, everything is combined into one simple app.

Unique Features

Often impersonated, never duplicated

Features In This App

Whether you're a car audio enthusiast, shop owner, brand owner or amp tester. We give you the tools for success.

Free Forever

Free for all users.
Upgrade for even more.

Port Length Tools

Get precise tuning for your enclosure.

Box Calculators

Design sealed, ported, and slot port subwoofer boxes.

Cut Sheets

Automatically generate panel cuts.

Wiring Calculators

Calculate amplifier wiring configurations.

Mobile Friendly

Use the tools anywhere.