Dedicated to car stereo upgrade and replacement of all Volkswagens with the Aktiv system. Read technical papers, tutorials and learn about the history of the popular VW stereo system.

Information on designing and building loudspeakers.

Browse yellow and white pages, FAQ, sound-off arena and business pages.

Resource for answers to car audio related questions and troubleshooting.

Tutorial for car audio crossovers, their operations and installation of. Includes introductions and tutorials on mobile loudspeakers.

Resource for loudspeaker design and construction detailing car audio, home audio and pro audio.

Car audio resources with news, reviews, discussions and event coverage.

Technical information for mobile electronics installers with diagrams charts and calculators for Ohm's law relays diodes resistors, and vehicle specific wiring locations.

Find specific fitments and projects for cars. Includes articles, and information on installation kits and accessories.