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Articles & Videos: Signal Processors

Factory sound processors take your factory stereo's signal, clean it up, and send a corrected audio signal to your aftermarket amps and subwoofers.

Life with a factory stereo
by Charlie Pastorfield

Many new vehicles make it difficult to install a new stereo. This article covers some of your options for improving the sound without changing the stereo.

Video: JL Audio CleanSweep®
by Robert Ferency-Viars, Ken Nail

Crutchfield's experts take a look at the JL Audio CleanSweep processor and explain how it cleans up and corrects the sound of a factory stereo.

Another informal vid shot by Matt sitting in the back seat with the Canon XSi camera. Gotta say, the content of the video aside, that the camera does an awesome job capturing HD sights and...

How to choose an equalizer
by Crutchfield Writing Team

Equalizers give you tight tonal control over your music playback, and offer plenty of other useful features. Find out how to choose the right one for your audio system.

How to choose a crossover
by Buck Pomerantz

This guide will help you choose a crossover for your system, whether a 2-way passive, 3-way active, or some other type.

What are firmware updates?
by Robert Ferency-Viars

What exactly is firmware, and why is it so important? This article answers those questions, and offers some advice on how to keep your gear's firmware up to date.

Laying the Foundation, Part 3
by Michael Sokolowski

Now that the receiver's in and the iPod is hooked up (see my first two posts for the full scoop), what about equalization and other signal processing for the system?  While I wait to...

Harold Jones, winner of  Virginia's IASCA Sound Quality Challenge, was kind enough to drop by Headquarters to show off his impressive ride. The centerpiece of Harold's system is his ...

A Rockford Fosgate system gave the family minivan a major audio overhaul while still keeping the manufacturer's dual DVD players intact for the kids.