Loud
Builds.
Less
Guesswork.
Practical DIY car-audio calculators, installation guides, and safety-first troubleshooting, plus a community where members can ask questions, discuss installs, and share build logs.
Real math.
Built by Enthusiasts,
For Enthusiasts
All About Audio is an independently maintained DIY reference for people who want to understand their system before cutting wire or building an enclosure. Content is written around electrical fundamentals, manufacturer specifications, and repeatable measurements.
Every published count on this page matches what is currently available. When a procedure depends on a specific amplifier, subwoofer, or vehicle, the guide tells you to use that product's manual instead of pretending one setting fits everything.
Calculate First. Build Once.
These resources open real calculators, checklists, and published guides. None of the cards below lead to an empty section or a simulated feature.
Subwoofer Wiring Calculator
Enter the number of identical voice coils and their impedance to compare supported series, parallel, and balanced series-parallel loads.
Open Calculator →Enclosure Volume Calculator
Calculate gross and net internal volume from enclosure dimensions while subtracting driver, port, and bracing displacement.
Calculate Volume →Amplifier Current Estimator
Estimate DC current from RMS output, system voltage, and efficiency. The result is clearly labeled as an estimate, not a fuse specification.
Estimate Current →Troubleshooting Checklist
Choose no power, protect mode, no sound, or unwanted noise and work through a focused sequence of safe diagnostic checks.
Start Diagnosing →Installation Guide Library
Read six complete guides covering wiring, enclosures, gain setting, door speakers, sound treatment, and the Big Three upgrade.
Browse Six Guides →Car Audio Glossary
Look up RMS, impedance, gain, clipping, crossover slope, voltage drop, Thiele/Small parameters, and other terms used throughout the guides.
Open Glossary →Start Your Build
Complete Amp Wiring Guide for Beginners
Everything you need to know about wiring an amplifier — power cables, ground, RCA, and remote wire — done right the first time.
How to Build a Ported Subwoofer Enclosure
Design and build a ported box tuned to your sub's specs for maximum bass output and efficiency. Includes box calculator tips.
Set Amplifier Gain with a Digital Multimeter
Use Ohm's law to calculate a target output voltage, then understand exactly what the multimeter method can and cannot confirm.
Door Speaker Upgrade: Step-by-Step Install
Replace your factory door speakers with aftermarket components. Covers panel removal, wiring adapters, and mounting tips.
Sound Deadening Your Car: The Full Guide
Reduce road noise and improve bass response with proper sound deadening. Covers materials, placement, and application techniques.
Big 3 Upgrade & Electrical System Overhaul
Power your high-output system with a proper electrical foundation. Add charging and ground conductors safely, preserve factory paths, and verify voltage drop before and after the change.
Build Louder.
Build Wilder.
Build Exactly How You Want It.
Start with a calculator when you need a number. Start with a guide when you need a procedure. Verify every equipment and vehicle limit against its own documentation before making the final connection.