2 Ohm Vs 4 Ohm Speakers: Can You Spot These Differences?

You may notice different impedances to a speaker’s specifications when purchasing it. So, what are the differences between 2 ohm vs 4 ohm speakers?

The electrical resistance of a 2-ohm model is lower than that of a 4-ohm one, resulting in louder sounds. Besides, a 2-ohm sub offers lower audio quality due to its high power usage.

Many obvious differences set them apart in terms of sound quality. For a detailed comparison, let’s follow our post!

What Is A 2-Ohm Speaker?

Ohms (Ω) is the measurement unit of resistance within a circuit. The more ohms, the more resistance.

The resistance in relation to an amplifier varies depending on its impedance.

Speaker impedance, in basic words, is the value that determines how much stress the speaker will exert on the amp.

If you buy a speaker and see the rating of 2 ohms on the package, it indicates that the speaker’s impedance is equivalent to two ohms.

This rating is on the low end, suggesting that there isn’t much resistance in your system. So, an amplifier may give it more energy without experiencing much resistance.

Because the resistance is low, the speaker will be louder. However, because of its low resistance, it uses more energy, resulting in inferior bass quality.

What Is A 4-Ohm Speaker?

A speaker with an impedance rating of 4 ohms has a greater resistance than one with a rating of 2 ohms.

With its higher resistance, it yields less sound and doesn’t produce a lot of basses.

However, this device requires less power from an amp. It also delivers a more condensed sound, leading to higher bass, although it is less loud.

2-Ohm Vs. 4-Ohm Speaker: What Are the Differences?

There are several differences between these devices. We’ll go through each one with you.


The main distinction that distinguishes them is the resistance’s value, as we can see from the name.

2 ohms come with less resistance than 4 ohms, so more current will be able to pass through. Besides, 4 ohms come with the higher resistance.

The current that can run across the device impacts many things, such as this sound quality, amplifier requirements, power consumption, etc.

We will discuss them one by one in the following sections so that you can picture how each system works.

Resistance is the key difference - 2 ohm vs 4 ohm speakers

Sound quality

Although many users may not realize it, the audio quality of the speakers differs significantly.

Please note that we are considering using the same amplifier for both kinds of speakers.

The speaker with an impedance of 2 ohms allows more electricity to pass.

More current typically equates to more power in this case. Hence, the sound will be louder. 

Devices of 4 ohms do not require as much energy from the amp. With the lower input, the sound will be less loud than with their competitor.​​​​

However, better power control results in a noticeable improvement in audio quality because you are using the same amp for both devices. 

You can achieve better audio quality using 2 ohm speakers; however, you’ll have to work with a lot of settings, and you’ll need a stronger amplifier for this task.

Loudness vs. sharpness: what do you prefer?

Amp compatibility

Because devices with the impedance of 4 ohms have better resistance, they don’t use as much power. This feature restricts electrons, lowering the energy required by your speaker.

You don’t have to take care of the car amp if you choose the 4-ohm driver. You may be confident that it will not hurt or damage the amp.

Many drivers like the 4-ohm model when they are not sure about their amp’s capacities because this model is compatible with more amps.

Also, you must ensure that the amplifier can deal with the input of 2 ohms. This model requires much more power and puts more strain on the amp.

Assume the 2 ohms demand 200 watts, and its competitor only requires 100 watts. Unfortunately, not every amp can handle 200 watts.

Due to the lack of compatibility, choosing the right amplifier for your 2-ohm speaker needs more time and effort.


Speakers with the 2-ohm impedance cost more than their competitors because they can provide a louder sound. To some users, loudness is important.

You’ll also need a strong amp in your automobile to operate the 2-ohm speaker.

You’re lucky if the car has a strong amplifier. But if you don’t have one, buy one and expect to pay an extra cost.

The cost of utilizing 2-ohm speaker can be higher than that of using the 4-ohm driver. It all depends upon whether you would like to improve that volume or not.

Consider the price as well


With this aspect, there’s no definite winner in this round. It depends mostly upon the speakers that you use. 4 ohms can theoretically last longer, but why?

4 ohms have a greater resistance, preventing too much electricity from passing through them. 

Instead of overpowering things with electricity, the resistance results in more regulated and accurate currents.

The current running across the system affects its lifespan -


Comparison table

We have compared the two models in important terms. Now, it’s time to summarize their differences:

Criteria 2 Ohms4 Ohms
Resistance2 ohms4 ohms
Sound qualityLouder but worse soundLess loud but better sound
Amp compatibilityLimitedGood
CostMore expensiveCheaper

Pros And Cons Of 2 Ohm Vs. 4 Ohm Speakers

If you can’t make up your mind after checking the comparison table above, let’s look at the pros and cons of each model and expect what you will get from them.

2 ohms


  • The sound is loud so that you can enjoy your music comfortably.
  • The system delivers strong bass.


  • You will sacrifice the audio quality for the loudness.
  • The price for a set is higher.
  • There are fewer amps that can work with 2 ohms.
  • The system suffers from continuous currents.

4 ohms


  • The sound is clear and sharp.
  • You can connect to multiple amplifiers.
  • The cost is lower.
  • Fewer currents are running through so that the device can last longer.


  • The sound should be louder.
  • The device needs more power to handle the sound output.

Is Higher Ohms Better For Your Subwoofer?

When you set up your speaker or a subwoofer, there are two components to check:

  • The subwoofer/speaker itself
  • The amp

If you see the specifications for these two, you’ll see that impedance plays a vital role.

You may assume that a higher impedance will improve the sub’s sound. In actuality, however, it will not.

The resistance or ohms of a speaker has no effect on the audio quality. Instead, the amp will determine your audio experience.

The audio quality will decrease if the ohms of your sub are insufficient for the amplifier.

For subwoofers, more ohms isn’t necessarily better, and it has no direct relationship with the subwoofer’s quality. Even there is, and it will be minimal or nearly undetectable.

Furthermore, your amplifier’s functionalities should meet the subwoofer’s specs.

When you connect the sub to an amplifier that isn’t compatible with it, and the subwoofer won’t blow up. Yet, it can overheat and twist the sound it delivers.

In this case, the amp will consume more electricity than your power suppliers are able to offer.

The amp can shut down immediately if this problem happens, causing significant damage.

Therefore, always double-check that your amp’s impedance matches that of your speaker or subwoofer.

You won’t have any troubles at this stage. If you work hard to adjust your volume, and you may encounter some problems.

The subwoofer and the amp should be compatible

Frequently Asked Questions

Here are frequently asked questions about the two speakers:

1. How much can the impedance affect your sound quality?

If you’re an audiophile, you’ll notice the difference in audio quality.

In general, 2 ohms allow louder sound, while the 4 ohms help deliver a more clear sound.

This video will help you understand deeper the working process of speaker impedance:

2. Can you use 4 ohm speaker with 2 ohm amp?

If you employ the 4-ohm speaker on the 2-ohm amp, your amp will suffer much damage.

Once the impedance doesn’t match, you’ll experience a significant power loss. The amp will surely overheat and finally die.

3. Which subwoofer is better for a car, 2-ohm or 4-ohm?

A 2ohm model with a strong amp makes a perfect match if you desire deep bass and loud sound. A 4ohm is a great choice if you’re on a budget and prefer clarity.

Final Verdict: Which One Is Better?

The 4-ohm speaker will be your best choice if you would like bass at a reasonable volume and of the greatest quality. This variant may also connect to multiple subwoofers in a line for increased resistance.

If you would like the strongest bass, try the 2-ohm model, and if you have many subs, link them in series to lower resistance and therefore increase volume.

Hopefully, the comparison in this post helps you determine the better speaker for your sound setup. If you have any questions, please feel free to ask us at My Car Gears.

Thank you for reading!

Associated posts: