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Articles & Videos: 4-channel Amplifiers

Car amplifier buying guide
by Buck Pomerantz

How much power and how many channels are right for you? This guide will help you choose the right amplifier for your car's sound system.

Video: car amplifier power
by Zak Billmeier, Ken Nail

We describe the basics of deciding how much power an amplifier should have when you're trying to match it to your speakers or subwoofers.

Make your music sound lively and vital with a Sound Ordnance amplifier. Watch this Crutchfield video to see what these rugged, value-packed amplifiers have to offer.

Video: car amplifier channels
by Zak Billmeier, Ken Nail

How many channels you'll need for your amp depends on how you intend to use it, and with how many speakers or subs.

Video: car amplifier features
by Zak Billmeier, Ken Nail

This video describes some of the common features you should look for when you're shopping for an amp, like a high-pass filter or a bass boost.

Confused about wiring your subs and picking the right amplifier? Crutchfield will get you on the fast track to big bass with this simple guide.

Amplifier installation guide
by Crutchfield Writing Team

Here's a step-by-step car amplifier installation guide, including troubleshooting when things don't work perfectly.

Subwoofer wiring diagrams
by Buck Pomerantz

Our wiring diagrams will help you find the best way to connect your subs and amps so you'll get the best performance out of your gear.

Car amplifiers FAQ
by Buck Pomerantz

Our Amplifier FAQ answers many common questions like: How can I add an amp to my system? Where should I mount it? What wiring do I need? What size fuse and power wire?

Car amplifiers glossary
by Crutchfield Writing Team

Car amplifier audio terms - like watts, volts, and efficiency - are explained.

Amplifier wire gauge chart
by Buck Pomerantz

Need to know know which size of wire you should use when installing an amplifier? Use our handy cable gauge chart to find out.

Tuning your subs
by Buck Pomerantz

What does the gain control do anyway? This article describes how to adjust your amplifier so that your subwoofer sounds just the way you want it 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 ...

This step-by-step guide will help you make sure that your amps and subs are evenly matched and work well together. We explain how to select one to go with the other.

Amps make music fun
by Buck Pomerantz

When you add an amp to your system, the sound becomes higher, wider, and more realistic — like the band's in the car and you're in the front row.

One of our employees shares the excitement of having an amplifier in her car for the first time. We installed the Rockford Fosgate Punch P400-4 amplifier in her car,

After a little over a year of driving my 2011 Subaru Impreza, I knew it was time to change out the system from factory equipped to an aftermarket setup. It also made