Are 4 Ohm Speakers Harder To Drive?

Are 4 ohm speakers harder to drive? If you know the correct way to drive a 4 ohm speaker, then you will not need to ask this question. Let us help you out in the article below.

Car speakers are generally 4-ohm speakers installed to give an amazing boost in performance and very natural sound with extremely low distortion. But 4-ohm speakers derive more power from the receiver, and they are also known as power-hungry speakers.

Impedance is a measure of how much the speaker resists, current known as “ohm.” People who have purchased any impedance speakers face many issues and confusion initially as they are not aware of the proper working and terms related to such speakers. 

Are 4 Ohm Speakers Harder To Drive

For instance, are 4-ohm speakers harder to drive among the most common questions that the users encounter? In this article, we will talk about what impedance speakers are, the best types, and how you can drive these speakers. 

What Are Impedance Speakers?

In simpler terms, impedance is the combination of resistance and any sort of reactance in the circuit. You can also call impedance resistance, and it is the opposing force that acts opposite to the flow of current. 

You need to know the impedance of your speakers so that you can use the correct type and value of amplifiers. Matching the impedance of the speakers with the impedance of the amplifier is necessary for smooth operation.

A speaker with a low impedance value allows more electrical signal through its circuits, and the current can also travel easily due to this reason. 

Due to this reason, you can observe that an 8-ohm speaker has a power requirement of 100 watts, whereas a 4-ohm speaker has a power requirement of around 150 to 200 watts. 

Are 4 Ohm Speakers Harder To Drive

Why Is It Difficult To Drive A 4 ohm Speaker? 

A 4-ohm speaker is complicated and harder to drive because of its design and power requirements. A speaker that has a low impedance value requires a more significant amount of current. Due to this reason, it is difficult for the circuits inside your speaker to allow the power to reach the drivers. 

It is necessary that you use a compatible amplifier with a 4-ohm speaker. If your amplifier is not compatible with your speakers, then there is a very high probability that all the speakers’ drivers and circuits get short. 

Whereas, if you use an amplifier that operates smoothly with your speaker, you will experience a much better and louder sound quality. 

To understand the concept in a much better way, you can take the amplifier as a water pump, and now if you attach a smaller pump to a pipe that has a much larger capacity (4-ohm speakers), then there will be performance issues. 

But if you attach a water pump that is the same size as the pipe, everything will operate smoothly. Speakers that have higher impedance will be able to extract less amount of current from the amplifier. 

Due to this, you can also experience slight distortion in the amplifier, although it is not a significant concern like other factors. 

The damping factor will also concern the amplifier, and this factor refers to your amplifier’s ability to control the speaker’s motion once you have stopped the flow of current. 

Amplifiers that have a higher damping factor can easily absorb the impedance generated by speaker coil motion. 

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Why Is Low Impedance Better? 

You will find that there are benefits of using speakers that have low impedance as well. You will extract a much higher power output from the amplifier due to the low impedance. 

This feature is helpful in professional setup and studios. People that might use these speakers at home for entering might not notice the difference. You can reduce the load exerted on the speakers and the amplifiers by half if you use a 4-ohm speaker instead of an 8-ohm speaker. 

Consuming fewer dozens of amps by switching to a 4-ohm speaker is also cost-effective. People working in a professional setup will benefit a lot from this feature.

Apart from the technical and practical reasons, people are also switching consistently to speakers with low impedance because of the amplifiers. Newer amplifiers available in the market can maintain a consistent and stable output while delivering large power output. 

Are 4 Ohm Speakers Harder To Drive

How To Connect Impedance Speakers? 

You must also know how to connect multiple impedance speakers as you never know when You might have to use them. You can connect impedance speakers in mainly two ways are in series or parallel. 


In series, the impedance or the resistance will always add. For instance, if you want to connect to 4-ohm speakers together in series, then the total impedance from the speakers will be 8 ohms. 

This is an effective way of increasing the impedance of the speakers. If the amplifier is not compatible with a single 4-ohm speaker, you can use this technique to increase the impedance to 8 ohms. 

You should be very careful while connecting multiple impedance speakers, as after being connected, they should also be compatible with the amplifier. 


Parallel connection is made in impedance speakers to reduce the resistance. In the case of a parallel connection, the resistance is divided, whereas, in series, they are added together.

 For instance, if you connect two 8 ohm speakers in parallel, the effective resistance would be 4 ohms. That is eight divided by 2 ( number of speakers). 

You should be very careful regarding the effective impedance in a parallel connection, as it can quickly drop below the level where your amplifier may not safely drive the power. 

4-ohm Speaker v/s 8-ohm Speaker

A 4-ohm speaker would need a higher current and more power from your amplifier in comparison to an 8-ohm speaker. To produce the speakers’ sound quality and loudness, these speakers must work with good amplifiers. 

The main reason for this phenomenon is how voltage, current, and resistance are related to each other. All these three entities have either a proportional or inversely proportional relationship with each other. 

For instance, at a given voltage, if the impedance or the resistance is low, you will get more current; similarly, if the impedance level is high, the current will be less. 

To provide more power to the speaker, it is essential that the amplifier also has a higher power rating. 

If we compare the audio quality of a 4 ohm and an 8-ohm speaker, then you will not find a massive difference other than slight distortion and lack of clarity. 

A mismatch in the amplifier and the speaker can cause the internal circuits to burn. You are required to match this level of impedance with the amplifier whenever you listen to louder music as it requires more power. 

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How To Match The Speakers And The Amplifier?

Matching the amplifiers with the speakers is very important, and it is not as simple as just plugging in both devices and connecting them, and then you can start playing your audio. 

You need to match the ratings of your speakers with the amplifier if you want to get richer, high-quality, and fuller audio. Due to this compatibility, the audio from your speakers will not blow your speakers out, and your speakers will deliver superior performance. 

This process is also essential for increasing the lifespan of your speakers. If you want your speakers to operate smoothly for decades, you must check the amplifier settings before using them.

This extra money your spend on speakers and amplifiers will be worth your effort and money once you know how to use them efficiently. 

Larger rooms You must use highly sensitive speakers. Sensitivity in speakers relates to how loud a speaker is when you are 1 meter away, and the watt power supplied to the speaker is 1 watt. Sensitivity for speakers is measured in decibels. 

A speaker with low sensitivity will sound calmer and quieter when you stand away from it, whereas a speaker with high sensitivity will sound much louder. 

Sensitivity does not relate to the quality of sound. Instead, it just relates to the volume of the audio coming from the speakers. Some people can also avoid buying an amplifier if their speaker has high sensitivity. 

As you increase the distance between yourself and the speaker, there is a gradual drop in the volume. 

Intimate or smaller places do not necessarily require speakers that have very high sensitivity. You can also use less sensitive speakers. 

Are 4 Ohm Speakers Harder To Drive

Threats To 4 ohm Speakers While Driving

There are mainly two possibilities that can occur while you are connecting your speakers to the amplifier.

  • Connecting a continuous power source:- In this case, the speakers cannot distribute or dissipate the heat energy coming from the amplifier output. Due to this, the voice coil inside the speaker burns up hence destroying the speaker. 
  • Connecting to a weak power source:- If the amplifier is weak, the volume will be low even if you set it higher. If you continue to crank up the volume, this will result in overheating. Due to this overheating, the internal circuits in your speaker will burn to create a horrible distortion in the audio. 

Frequently Asked Questions 

Are 4 Ohm speakers better? 

The answer to this question is yes, 4-ohm speakers are generally better than other traditional speakers available in the market. But how effectively you use these speakers also depends on your ability to drive these speakers. 

Every home sound system has some of the other sound issues. Due to this, there will be some impedance in the audio of your 4-ohm speakers as well. 

A speaker with a higher ohm and higher sensitivity will be as effective as a speaker with lower ohm and lower sensitivity. 

You might like to read: How Do Speakers Play Multiple Frequencies At Once

Do 4-ohm speakers require more power? 

Yes, a 4-ohm speaker will require more power. Speakers with lower ohm values require more power to drive and operate smoothly. For instance, a 4-ohm speaker will require more power than an 8-ohm speaker. 

The difference of power required between both these speaker types is twice as much as well. You would require an amplifier that has consistent power output. The minimum power required by the 4-ohm speaker is 121 watts. 

Is it harder to drive 4-ohm speakers than 8-ohm speakers? 

Yes, a 4-ohm speaker is harder to drive than an 8-ohm speaker. If you use a stiffer spring with high resistance, you’ll have to work harder to push it. But in the case of speakers, the inverse relationship works. 

Speakers that have low impedance values are much harder to drive than speakers that have higher impedance values. So you can drive an 8-ohm speaker with less effort and less time than a 4-ohm speaker. 

Are 4 Ohm Speakers Harder To Drive

How much power do I need to drive a 4-ohm speaker?  

A 4-ohm speaker requires extra power than an 8 ohm or a 6-ohm speaker because of less resistance. As the resistance in a 4-ohm speaker is less than the other speakers due to these reasons, more amount of current can flow freely through the speakers. 

You will find the power requirement for a 4-ohm speaker to be around 150-200 watts depending on the quality and design of your speakers. Speakers with high resistance permit less current to travel through them, due to which you will not require as much power. 

What is a 4-ohm speaker? 

A 4-ohm speaker is a type of impedance speaker similar to a 6-ohm speaker or an 8-ohm speaker. The number before these speakers suggests the level of impedance. 

With the help of these numbers, you can tell the amount of current that will flow through the speaker at a certain voltage. The lower the impedance value higher will be the power required to run these speakers. 

For example, a ten-volt signal might only produce two amps of current in the amplifier. Mostly the speakers inside a car are the low impedance speakers such as the 4-ohm speakers. 

Wrap Up

The above article explains everything in a detailed manner regarding impedance speakers. You will get to know about what these speakers are, how to arrange them or connect them. We also answer the most common question about driving a 4-ohm speaker in this article as well.