Basic Car Audio Electronics – This one site can keep you busy for days.
The12Volt.com -Free Vehicle Wiring, Relay Diagrams, and Technical Information for Mobile Electronics Installers, Enthusiasts, and Do-It-Yourselfers since 1999
Amps and Wire Gauge – 12V Circuit – If you’re buying power and ground wire and you don’t know where to start, use the table on this site.
Getting Grounded – Excellent article regarding grounding our equipment in the car.
JL Audio School of Sound Presentation Video – This is a long video on YouTube that contains some invaluable material that may transform the way you design and install car audio systems.
Understanding Skin Effect and Frequency – This explains why skin effect IS NOT relevant to what we do with car audio.
Speaker Crossover Chart and Capacitance vs. Frequency Calculator(High-pass) – I use this for selecting capacitors for back-up protection on active tweeter channels.
The Low-Down on Dispersion – A very quick summary, with graphic illustrations, of speaker dispersion and beaming.
Damping Factor: Effects On System Response – If you read only one article discussing damping factor, a topic of shrouded in mythology, read this.
“This Has Gone Too Far, But I Must Know More”
Sound Reproduction: The Acoustics and Psychoacoustics of Loudspeakers and Rooms – This is a phenomenal book about audio recording and reproduction and the human hearing system. One sentence can’t possibly summarize the information and wisdom in these pages. A must-have for anyone serious about designing audio playback systems.
Design or Measurement Tools