How To Choose An Amplifier For Car Speakers? 9 Top Things

An amplifier aims to enhance the audio quality provided by your car’s audio system. The sound produced by an amplifier is powerful. There are numerous amplifiers available, each with its own set of functions. As a result, you may be anxious to learn about this device. How to choose an amp for car speakers?

Look no further than this article! It will give you buying guides to pick the best-suited product for your needs. Let’s scroll down!

What Are The Types Of Car Speakers?

Before selecting a suitable amplifier, you should understand your car speaker’s type. Here are two standard variables:

Component Speakers

If you need the highest audio quality from your car audio system, you should equip your vehicle with a component speaker.

Component systems possess speakers with outstanding design and many drivers for the best sound.

Component systems include separate tweeters, external crossovers, and woofers. These parts work together to produce better sound.

Using this speaker system, you may attach drivers in multiple places around your car, giving the music more clarity and depth.

Full-range Speakers

You can consider using full-range speakers if you want to replace your OEM speakers rapidly and effortlessly.

This type is the most popular variety available. It has a woofer to create low bass tones and a tweeter to produce high notes.

Some of them will consist of super tweeter or midrange drivers. They’re all available in different sizes to match previous factory-speaker positions.

How To Choose An Amplifier For Car Speakers - Car speakers

What Are The Specifications Of A Car Amplifier?

Choosing a vehicle amplifier is similar to selecting a standard amplifier. Below are the most basic specs to look for in a vehicle amplifier:

Power Output

It’s a measurement of the audio quality an amplifier can make. The speakers used with your amplifier will determine the required power output.

THD + N (Total Harmonic Distortion) and Noise

It’s a metric for how much noise or coloring an amplifier adds to the audio it produces.

A lower number for this metric indicates that the audio system is similar to the sound quality of the audio signal.

The purchaser’s listening preferences determine the optimal THD + N value.


There are two signals in stereo amplifiers, including a proper signal and a left one. It’s a metric for determining the amount of a signal combined with the second.

A negative decibel value indicates that the right and the left signals are separated more clearly.

SNR (Signal to Noise Ratio)

An amplifier will create background noise because of the electronic waves.

The Signal to Noise Ratio is a metric that determines how perceptible noise is.

If your amplifier showers a more excellent value for this domain, you will hear less noticeable noise.

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Basic specs

What’s The Advantage Of Getting A Car Amplifier?

A specialized amplifier is necessary if you are concerned about the audio quality of the vehicle system.

Below are some benefits if you equip this device for your car audio system:

It Makes The Sound Louder

Automobiles produce a lot of noise. You won’t realize how loud things are.

When you switch on your car radio and listen via ordinary speakers, you can quickly notice the irritating sounds.

Besides, some external noise from the tires, the engine, the traffic, or the air conditioner may drown out what you are listening to.

Installing an amplifier to your system will solve this issue by increasing the loudness of your audio.

It increases the volume of automobile speakers while not distorting them, helping you hear only the music.

It makes the sound louder.

It Provides Flexibility And Additional Features

For dedicated audiophiles, access to modification capabilities like signal processing or equalizers is essential.

However, many older car radio systems do not have your desired functions.

Installing an amplifier allows you to adjust the sound without buying a brand new stereo player.

Furthermore, this equipment allows you to add or delete channels from your car’s audio system.

This function is ideal for people who enjoy working on cars regularly or who constantly need new equipment.

It Improves Sound Quality

Among the most common reasons for adding amplifiers to your vehicle stereo system is increasing sound quality.

The audio will distort and crackle when turning up the sound on OEM speakers. Installing an amplifier makes the sound louder, cleaner, and bassier.

If you need to hear the vocals clearly or the distinction among instruments when listening to your favorite song, you can’t go wrong with this device.

It improves sound quality.

How To Choose An Amplifier For Car Speakers?

Are you looking for a suitable amplifier for your car speakers? It’s better to consider the following factors before purchasing:


When it comes to automobile amplifiers, never skimp on power. It’s critical not to under-power the speakers in your vehicle’s sound system.

Most people make the error of buying the amplifier first, then the speaker. It’s best if you reverse the order.

It would be best if you chose your speakers first. After that, figure out what kind of amplifier will best power them.

If you plan to use a similar amp to power your car speakers, you’ll need plenty of power.

While bridging three channels to generate enough power for operating a subwoofer may seem reasonable. In some cases, it’s not always the best option.

If your amp cannot meet the needed sub power, you might want to consider purchasing a second mono amplifier.

How To Choose An Amplifier For Car Speakers - Power

System Compatibility

It would help if you also double-checked the amplifier’s and sound system’s compatibility before buying.

Here are the components to connect. The head unit attaches to the amplifier, relating to the car speakers.

Preamp outputs are frequently absent from preexisting head units, a common problem. In this situation, a line-level amp input is helpful.

Channel Numbers

In a vehicle’s audio system, a channel is electronic circuitry that provides power to a particular speaker.

Several-channel car amps help drive multiple speaker systems.

The main factor to consider is how many channels your vehicle’s stereo system requires. Amplifiers come in a variety of shapes and sizes.

The speaker number determines how many channels the sound system needs. You’ll need a separate channel for each speaker you want to enhance.

One single amp will suffice if you want to add a sub to a preexisting system. Units with two, four, or six channels are usually the most adaptable.

Your two-channel amplifiers can help power two woofers and two full-range speakers.

Amplifiers with four channels are ideal for installing subs to your audio system and improving the power delivered to the back coaxial speakers.

In this situation, it’s simple to power the component by running the coaxial speakers on their channels or bridging the two additional channels.

Alternatively, you can use a similar amp to power all four full-range speaker units or use a single mono amp to power the sub.

Channel numbers

Amp Classes

Amplifiers come into various classes based on the type of electronic circuit.

This component is critical because it affects sound quality, heat generation, and energy efficiency. A, B, AB, and D are the four classes of amps.

A-class amplifiers generate more outstanding sound quality, but they waste a lot of energy and heat.

Class B amplifiers are more functional than Class A, but they produce more distortion.

Class AB amplifiers combine the benefits of class A and B amplifiers while eliminating their drawbacks, such as reduced energy economy or crossover distortion.

Class D is the most outstanding among them. They offer absolute efficiency for performance with compact and lightweight designs.

Space Constraints And Size

When purchasing a car, most people focus on the amplifier specs. They rarely think about the car’s size and space.

The overall quality of audio will be influenced by an amp with two modest speakers installed in a Sports Utility Vehicle (SUV).

A big amplifier will take up too much space in a small vehicle. Because the amp may be an additional attachment, you must first choose an appropriate position for it.

Space constraints

Installation Process

Amplifier installation isn’t as compl9icated as you may think. All you have to do now is locate the best spots for the amp and cable routing.

Determine the location and suitable positioning for the amplifier before installation so that you may easily install and adjust it at any moment.

Battery Requirement

The audio system in the automobile has a maximum RMS power of at minimum 600 watts.

If an extra battery is not possible, the vehicle’s initial battery must eventually be upgraded.

Battery requirement

Trusted Brands

Even if it costs a few additional dollars, it’s best to buy amps from well-known companies. It is for safety and quality.

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How Much Are You Able To Pay For Car Speakers?

A typical speaker setup will set you back US$500. A less expensive one may be in the US$200 range. If you like being extravagant, you’ll spend more than $1,000.

Is It Possible To Set Up Car Speakers On Your Own?

The answer is yes! It takes time and effort to complete this project. Car speaker replacement isn’t the most challenging repair you’ll ever do.

Should Speaker Wattage Be Higher Than Amp?

The answer is no! The amplifier power is better to be twice as high as the speaker power.

For instance, if the speaker power is 200 watts, you should add an amplifier with 400 watts.

Can You Run Two Speakers On One Channel?

You should be aware that there is no such thing as free electricity. When you connect two speakers to a single output channel, the power available must be shared.

Car speakers

The Bottom Line

After reading this article, have you known how to choose an amplifier for car speakers? We hope you grasp the factors to consider before purchasing a new device with our detailed buying guides.

It would help if you thought about some aspects like power, system compatibility, channels, classes, size, battery, or brands.

Hopefully, this article on My Car Gears will be helpful for you. Thanks for reading!

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