Ohm Vs 2 Ohm Subwoofer

When it comes to choosing the right subwoofer for your car audio system, one of the most important factors to consider is its impedance. And in this case, we are talking about Ohms.

In simple terms, Ohms (Ω) refers to the resistance a speaker has against electrical current. The lower the impedance, the easier it is for electricity to flow through the speaker. So what does this have to do with choosing between an Ohm and 2 Ohm subwoofer? Let’s find out.

What is an Ohm Subwoofer?

An Ohm subwoofer typically has an impedance rating of 4 ohms or higher. This means that it has a higher resistance to electrical current, requiring more voltage to produce the same amount of power as a lower-impedance subwoofer.

Ohm Vs 2 Ohm Subwoofer

So why would someone choose an Ohm subwoofer over a 2-ohm one? One is that higher-impedance speakers tend to be less sensitive and require more power from the amplifier to produce the same volume as a lower-impedance speaker.

Additionally, Ohm subwoofers have a smoother frequency response compared to their 2-ohm counterparts. This means that they can reproduce low frequencies with more clarity and accuracy.

What is a 2 Ohm Subwoofer?

As you may have guessed, a 2-ohm subwoofer has an impedance rating of 2 ohms. This makes it a lower impedance speaker compared to an Ohm subwoofer, meaning it has less resistance to electrical current.

One advantage of a 2-ohm subwoofer is that it is more sensitive, requiring less power from the amplifier to produce the same volume as an Ohm subwoofer. This can be beneficial for those who have smaller amplifiers or are looking to save some space in their car audio system.

Which One Should You Choose?

Now that we understand the differences between Ohm and 2-ohm subwoofers, which one should you go for? If you have a high-powered amplifier and are looking for more accurate and smoother bass, then an Ohm subwoofer would be the way to go.

 On the other hand, if you have a smaller amplifier or limited space, a 2-ohm subwoofer would be more suitable. It’s also important to consider your personal preferences and listening habits when choosing between these two types of subwoofers. Some people may prefer the extra punch and sensitivity of a 2-ohm subwoofer, while others may appreciate the clarity and accuracy of an Ohm subwoofer.

A Word on Wiring

Another factor to keep in mind when choosing between an Ohm or 2-ohm subwoofer is wiring. In general, lower-impedance speakers require thicker wires to handle the higher electrical current. This means that if you choose a 2-ohm subwoofer, you may need to upgrade your wiring to ensure optimal performance.

Related: Which subwoofer provides the deepest bass?


Are 2 ohm speakers better?

Before we go into whether 2-ohm speakers are better or not, let’s take a look at what ohms refer to. Ohms measure the electrical resistance in a circuit and how much current is passing through it. The rating of a speaker isn’t just based on its impedance, but also various other factors such as power-handling capabilities and frequency response. 

So when it comes to deciding which type of speaker you should opt for – 8 ohm, 4 ohm, or 2 ohm – there are pros and cons associated with each one that you should consider before making your decision. 

Generally speaking, most audio experts will tell you that 8-ohm speakers have an easier time producing deep bass sound since they require less power from the amplifier than 4-ohm or 2-ohm speakers do. 

Can I use a 2-ohm sub with a 4-ohm amp?

It is possible to use a 2-ohm sub with a 4-ohm amp, but there are some important considerations. Generally speaking, it is not recommended to do so as the amplifier and speaker have different impedances that can cause problems in sound performance.

When you use a 2-ohm subwoofer with a 4-ohm amp, the amplifier will need an additional impedance boost to ensure that its output does not exceed its power capabilities. This could lead to excessive distortion and poor sound quality when paired together without proper optimization. Additionally, using mismatched impedances could damage both your amplifier and speakers if too much current is pushed through them and they cannot handle it correctly for prolonged periods. 

What is the best ohms for a subwoofer?

When it comes to selecting the best ohms for a subwoofer, several factors come into play. Ohms measurement is essentially a measure of electrical resistance and will depend on components such as the subwoofer, amplifier, and wiring. 

To begin with, the type of subwoofer you’re using will have an impact on the ideal ohm rating you should look for. If your setup consists of multiple speakers in parallel meaning they all share one common voice coil then it’s important to select a model with 4-ohm dual voice coils or 8-ohm single voice coils (or any combination thereof). Each speaker in this configuration would be wired separately to the amplifier at its load level. This approach ensures maximum power handling from both components.

 On the other hand, if each speaker has its separate power source then you’ll want to go with either 2-ohm single voice coils or 4-ohm dual voice coils respectively. 


 Both ohm and 2 ohm subwoofers have their advantages and it ultimately comes down to personal preference and specific audio system requirements. It’s important to do your research and consider all factors before making a decision. And remember, whether you choose an Ohm or 2-ohm subwoofer, always prioritize quality over quantity for the best audio experience. Happy listening.  So next time you’re in the market for a new subwoofer, don’t forget to consider impedance as it can make a significant difference in your overall listening experience.

 So what are you waiting for? Upgrade your car audio system today and feel the bass like never before.  Don’t let impedance confuse you, understanding Ohm vs 2-ohm subwoofers is as simple as choosing between power and sensitivity. Choose wisely and enjoy your music on the go. 


Author, 2 or 4 ohms? Posted: Jan 12, 2020

Robert David

Robert David

I’m Robert David an owner and writer of subwoofergiant. I love to spend my time finding good products. I guide people about which subwoofer is best for them to pick. if you want knowledge about subwoofers. you come to the right place Thanks!

We will be happy to hear your thoughts

Leave a reply

Subwoofer Giant