Skip to Content

Cartronics

Audio educator: Amplifiers

- AMPLIFIED VS. NON-AMPLIFIED CAR AUDIO SYSTEMS

What’s the Difference?

When setting up your car’s audio system, one big decision you'll face is whether to go with an amplified system or stick with a non-amplified system. But what does that mean, and why should you care? Let's dive in and explore these concepts, including the different types of amplifiers and how to choose the right one for your speakers and subwoofers.

SHOP AMPLIFIERS

Non-Amplified Systems: The Basics

A non-amplified car audio system is what you typically get straight from the factory. It consists of a head unit (like your car’s radio or CD player) connected directly to the car’s speakers. In these setups, the head unit usually has a small built-in amplifier that powers the speakers.

Pros:

Simple and straightforward.

Less expensive because you don’t need to buy extra equipment.

Easy to install since everything comes already set up.

Cons:

Limited power, which means your music might not be as loud or clear.

Bass and overall sound quality may be lacking, especially at higher volumes.

Example: Think of a non-amplified system like listening to music through your phone’s speaker— it works, but it’s not as powerful or immersive as it could be.


Amplified System

An amplified car audio system adds a separate amplifier to your setup. This amplifier boosts the power sent to your speakers and subwoofers, making your music louder, clearer, and more detailed.

Pros:

Better Sound Quality: Louder, clearer music with deeper bass.

More Control: You can adjust the amplifier to get the exact sound you want.

Handles More Speakers: Easily powers multiple speakers and subwoofers without losing quality.

Cons:

Cost: Amplified systems are more expensive because you need to buy the amplifier and possibly more powerful speakers or subwoofers.

Installation: Setting up an amplifier can be more complicated and might require professional installation.

Example: An amplified system is like adding a high-quality speaker to your phone. Suddenly, your music sounds fuller, richer, and much more enjoyable.

Amplified Systems: A Big Step Up


An amplified car audio system adds a separate amplifier to your setup. This amplifier boosts the power sent to your speakers and subwoofers, making your music louder, clearer, and more detailed.

Pros:

Better Sound Quality: Louder, clearer music with deeper bass.

More Control: You can adjust the amplifier to get the exact sound you want.

Handles More Speakers: Easily powers multiple speakers and subwoofers without losing quality.

Cons:
Cost: Amplified systems are more expensive because you need to buy the amplifier and possibly more powerful speakers or subwoofers.

Installation: Setting up an amplifier can be more complicated and might require professional installation.

Example: An amplified system is like adding a high-quality speaker to your phone. Suddenly, your music sounds fuller, richer, and much more enjoyable.

Understanding Amplifier Channels


Amplifiers come in different "channel" configurations, which tells you how many speakers or subwoofers the amp can power. Here’s a breakdown:

1-Channel Amplifier:
Use: Usually for powering a single subwoofer.
Example: If you just want to add more bass to your system, a 1-channel amp will give your subwoofer the power it needs.

2-Channel Amplifier:
Use: Can power two speakers, one subwoofer, or be bridged (combined) to power a single, more powerful subwoofer.
Example: Perfect for powering the front speakers in your car or a single subwoofer.

3-Channel Amplifier:
Use: Powers two speakers and one subwoofer.
Example: If you have front speakers and a subwoofer, a 3-channel amp is a great all-in-one solution.

4-Channel Amplifier:
Use: Can power four speakers or two speakers and a subwoofer.
Example: Ideal for a full setup with front and rear speakers or a combination of speakers and a subwoofer.

5-Channel Amplifier:
Use: Powers four speakers and one subwoofer.
Example: This is perfect for an entire car system, covering both the speakers and the subwoofer with one amplifier.

6-Channel Amplifier:
Use: Powers six speakers or a combination of speakers and subwoofers.
Example: If you have a more complex setup with additional speakers, a 6-channel amp offers more flexibility.

8-Channel Amplifier:
Use: Powers eight speakers, which is great for larger vehicles or very detailed sound setups.
Example: An 8-channel amp is ideal for a multi-speaker setup in SUVs or for someone who wants the most detailed sound possible.

DSP Amplifier:
Use: DSP stands for Digital Signal Processing. These amps not only power your speakers but also allow you to finely tune the sound.
Example: A DSP amp is perfect for audiophiles who want complete control over their car's sound system, allowing them to tweak and perfect every detail.

Choosing the Right Amplifier Power Rating


The power rating of an amplifier tells you how much power (measured in watts) it can send to your speakers or subwoofers. Matching this power correctly is crucial for great sound.

Speakers: Look at the RMS power rating of your speakers, which is the amount of power they can handle continuously. Choose an amplifier with a power rating that matches or slightly exceeds this RMS rating.
Example: If your speakers have an RMS rating of 75 watts, you’ll want an amplifier that can deliver 75 watts to each speaker.

Subwoofers: Like speakers, subwoofers also have an RMS rating. You’ll need an amplifier that can match or slightly exceed this rating for the best bass performance.
Example: If your subwoofer has an RMS rating of 300 watts, look for an amplifier that can deliver 300 watts to that subwoofer.

Important Tip: Never overpower your speakers or subwoofers with an amplifier that delivers too much power, as this can cause damage. Similarly, underpowering them can result in poor sound quality.

Adding Multiple Amplifiers


Sometimes, one amplifier isn’t enough, especially if you have a large or complex audio setup. Here’s what to keep in mind when adding multiple amplifiers:

  • Power Distribution: Make sure your car’s electrical system can handle the extra load. You might need to upgrade your car battery or alternator.

  • Signal Distribution: Use a signal processor or a distribution block to split the audio signal between amplifiers. This ensures each amp gets the correct signal for the speakers or subwoofers it’s powering.

Example: If you’re running a 4-channel amp for your speakers and a separate 1-channel amp for your subwoofer, you’ll need to carefully plan how the power and signal are distributed to each.

Understanding Amplifier Classes


Amplifiers come in different classes, which tell you how efficiently they use power and how they affect sound quality:


Class A:
Sound Quality: Excellent sound quality but less efficient and produces more heat.
Use: Rare in car audio due to their inefficiency and high heat production.


Class B:
Sound Quality: Better efficiency than Class A but with some distortion.
Use: Also rare in car audio because of the distortion.


Class AB:
Sound Quality: Combines the benefits of Class A and Class B—good sound quality with better efficiency.
Use: Common in car audio, balancing sound quality and efficiency.


Class D:
Sound Quality: Very efficient and produces less heat, but with slightly lower sound quality compared to Class AB.
Use: Perfect for subwoofers and systems where power efficiency is important.


Class H:
Sound Quality: Efficient like Class D but with even better sound quality.
Use: Often used in high-end car audio systems for both speakers and subwoofers.


Example: If you want a powerful subwoofer setup, a Class D amplifier is often the best choice because it can deliver lots of power without overheating your car's electrical system.

Why an Amplified System is Worth It


An amplified system is like upgrading from regular TV to a home theater setup. The sound is clearer, louder, and more enjoyable. Whether you're a casual listener or a serious audiophile, adding an amplifier to your car audio system will dramatically improve your listening experience. Plus, with the right amplifier, you can power more speakers and subwoofers, creating a truly immersive sound environment in your car.

In Summary:

  • Amplified systems provide better sound quality, more power, and more control.

  • Choose the right amplifier based on the number of channels and power rating needed for your speakers and subwoofers.

  • Amplifier classes determine efficiency and sound quality, with Class D being the most common for car audio.

  • Multiple amplifiers can be used for more complex setups, but careful planning is needed.

With the right setup, an amplified system can make every drive feel like a concert on wheels!

Active Channels vs. Using Crossovers: What's the Difference?


When setting up a car audio system, you'll often hear about active channels and crossovers. Understanding these concepts is key to getting the best sound out of your speakers and subwoofers.


What Are Active Channels?
Active Channels refer to a setup where each speaker (like tweeters, mid-range, and subwoofers) is powered by its own dedicated amplifier channel. In this setup, the amplifier sends a specific range of frequencies (highs, mids, or lows) directly to each speaker.


How It Works:
With an active setup, a Digital Signal Processor (DSP) or active crossover is used to split the audio signal before it reaches the amplifiers. Each amplifier channel then only amplifies a certain frequency range.
For example, one amplifier channel might be dedicated to high frequencies for the tweeters, while another handles mid-range frequencies for the mid-range speakers, and a third channel takes care of low frequencies for the subwoofer.


Pros:
Precise Control: Allows you to fine-tune the sound for each speaker, leading to better overall sound quality.
Improved Performance: Each speaker gets exactly the right frequencies and power, which can make the sound clearer and more detailed.


Cons:
Complexity: Setting up an active system requires more components (like a DSP) and a better understanding of audio tuning.


Cost: More amplifiers and additional equipment can make this setup more expensive.

Example: An audiophile who wants the best possible sound quality might choose an active setup to have full control over each speaker’s performance.


What Are Crossovers?
Crossovers are devices that split the audio signal into different frequency ranges (highs, mids, and lows) and direct those frequencies to the appropriate speakers.


Two Types of Crossovers:
Passive Crossovers: These are usually built into the speakers or installed separately. They filter the signal after it has been amplified.
Example: In a standard component speaker system, the passive crossover will direct the high frequencies to the tweeters and the mid-range frequencies to the woofers.


Active Crossovers: These work before the signal is amplified, dividing the frequencies and then sending them to separate amplifier channels (like in an active system).
Example: An active crossover can send high frequencies to one amp for the tweeters and low frequencies to another amp for the subwoofer.


Pros of Passive Crossovers:
Simplicity: Easier to install and doesn’t require as many amplifiers or a DSP.
Cost-Effective: Generally cheaper because you don't need extra equipment.


Cons of Passive Crossovers:
Less Control: You have less ability to fine-tune the sound compared to an active system.
Potential Power Loss: Some power can be lost in the crossover, which might slightly affect the sound quality.
Example: If you're looking for a straightforward setup without a lot of extra components, using passive crossovers is a good choice.


Active Channels vs. Crossovers: Which is Better?


When to Choose Active Channels:
Sound Quality: If you’re focused on getting the best possible sound and don’t mind the extra cost and complexity.
Customization: If you want to have full control over every aspect of your car audio system and enjoy fine-tuning your sound.

When to Choose Crossovers:
Ease of Use: If you want a simpler, more straightforward setup that still delivers good sound quality.

Budget: If you’re looking for a more affordable solution without needing multiple amplifiers or a DSP.

Why Active Channels Might Be a Game-Changer


Opting for an active channel setup allows for a higher level of customization and sound quality in your car audio system. Each speaker gets exactly the power and frequencies it needs to perform at its best, which can lead to a richer, more detailed listening experience. However, passive crossovers offer a simpler and more cost-effective alternative for those who want good sound without the added complexity.

In Summary:

  • Active Channels give you maximum control and sound quality but require more components and tuning.

  • Crossovers provide a simpler, more affordable way to manage your audio system’s frequencies, with passive crossovers being the easiest to use.

Choosing between active channels and crossovers depends on your priorities—whether it's the ultimate sound quality and control or simplicity and cost-effectiveness.



Send Message

Ready to build your dream car?

Request an appointment

- OUR LOCATIONS

Select closest location

for directions.

Kenneth Simpson

Madison – Rivergate
1815 Gallatin Pike N
Madison, TN 37115

Antioch – Hickory Hollow

5177 Hickory Hollow Pkwy
Antioch, TN 37013

Brentwood – Cool Springs

1724 Carothers Pkwy
Brentwood, TN 37027

Murfreesboro – Stones River

179 Mall Circle Drive
Murfreesboro, TN 37129



Cartronics focuses on the very best service with every customer. We are proud to stand behind our A+ rating with the BBB and strive to give every customer an amazing experience.


We require all of our technicians to be MECP certified. This nationally recognized certification should be a must for anyone that works on your vehicle