These popular sections of our site contain some of the most
often requested information in our forums. Please visit them before creating a new post or topic.
Member Downloads -
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to download (and upload) diagrams, tech tips, installation manuals, owner's manuals, and more.
Subwoofer Box Calculators - Easy to
use calculators to determine volume for multiple shaped boxes, speaker impedance loads, round and square port sizes, and more.
Subwoofer Wiring Wizard - Easy
to understand diagrams of one to four speakers with a variety of single and dual voice coils.
Vehicle Wiring - Free vehicle wiring
includes car alarm wiring, remote start wiring, car stereo wiring, cruise control wiring, navigation wiring,
and more for most vehicles available in the U.S. as early as 1967 and up.