What’s an LFE (Low-Frequency Effects) on a subwoofer? If you’re like most consumers, you didn’t even know there was an acronym for it. But you do now.

You’re probably used to hearing bass in your car, your home, and everywhere you go. What you probably don’t know is that your subwoofer also produces what is called an LFE effect.

In this blog post, we’ll go over exactly what the LFE is and how you can use it to get more out of your subwoofer.

What is LFE on a Subwoofer?

LFE stands for Low-Frequency Effects. It is the “surrounding” effect of the main speakers. You’ll get a nice rich sound in the main speakers, and the low end gets a nice, warm, enveloping sound. The low end of the sub is the same way, it’s the “surrounding” effect of the sub. The main difference is that the sub has a higher frequency than the main speakers, so it can reach the lower frequencies, but not as well as the main speakers.

What’s the Purpose of LFE on a Subwoofer?

Subwoofers work by producing a low-frequency sound that travels up into your vehicle. By using an LFE, you can hear what a subwoofer sounds like without it (and without putting the subwoofer in your vehicle), as well as further enhance the subwoofer’s low-frequency effects and sound.

LFE is essentially another term for bass. It refers to bass below 50Hz. To put that into perspective, bass below 20Hz is the bass of a subwoofer, and bass below 80Hz is the bass of a speaker. The middle of bass is considered mid-range, or between 50Hz and 80Hz, and the upper end of bass is considered high-end, or above 80Hz.

It’s important to understand that LFE doesn’t add bass to your vehicle. It only modifies the bass that comes out of your subwoofer. You still need a subwoofer, an amplifier, and a power source for your subwoofer to work. But this way, you can enjoy the benefits of your subwoofer without putting the subwoofer in your vehicle.

How to Set up a Subwoofer System?

You’ve probably been using a subwoofer for years without ever having heard the term “LFE” or having any idea what it means. It might not be the most useful thing in your home, but it can still make it sound fuller, deeper, and more powerful.

There are two main components to getting the most out of an LFE. The first is to set up the subwoofer correctly and the second is to have good speakers.

Furthermore, the LFE (low-frequency effects) can be helpful on a subwoofer. It can add some depth to the sub’s sound. It can also help with soundstage definition.

I believe there are three ways to accomplish this:

  1. The most direct way is to add a low pass filter at the subwoofer’s output. I don’t know if that is an option on most subwoofers. I know that some subs have a low pass filter that can be used as an integrator (turning the low pass filter down to a high pass filter and then back up again).
  2. You can add a crossover to the sub’s input.
  3. The easiest way is to add a delay to the sub’s input. The purpose of adding a low pass filter to the sub’s output is to limit the output of the sub to frequencies that are not audible to humans. The idea is to “emulate” a line-stage amplifier. 

What are Some of the Benefits of Having LFE?

LFE stands for “low-frequency effects,” but this is not a low-frequency sound. Low frequencies are sounds like bass, treble, and mid-range. They’re also the sounds of vibrations such as airplane takeoffs and explosions.

The LFE comes from subwoofers, which are small speakers designed to make the sounds of these low frequencies.

LFE can be an interesting tool in the toolbox of a good subwoofer, but it’s a lot more than just that. Let’s take a look at a few of the benefits that come with having an LFE subwoofer:

  1. Boosts the overall volume of the room
  2. Creates more immersive sound
  3. Reduces the effects of feedback and distortion
  4. Helps you hear small details
  5. Enables you to set your subwoofer to “zero crossovers” 

Different Types of LFE:

There are four different types of LFE, and each one has its purpose. They are:

1. Subsonic:

This is the most common type of LFE. The subwoofer is still able to reproduce the lower frequencies, but they do so at a higher volume than when there is no LFE.

2. Mild:

This is the second most common type of LFE. The subwoofer can reproduce the lower frequencies at a lower volume than when there is no LFE.

3. Subwoofer:

This is the least common type of LFE. The subwoofer is completely dedicated to the LFE function.

4. Mixed:

This is the type of LFE that we recommend for most audio systems. This is the ideal configuration. You can use your subwoofer as the main source of low frequencies, and then you can add other speakers to the mix to create the full sound.

Wrapping It All Up!!!

If you don’t know what LFE is, then you need to do some research on the subject. A subwoofer is the most important part of a great audio system, and if you’re interested in improving your sound quality, then you need to get the most out of your subwoofer.

Subwoofers are designed to generate the lowest possible frequencies in the room. This is called the bass range. By putting an LFE cable into the subwoofer, you can take the subwoofer’s ability to reproduce the low frequencies and add it to your other speakers, which allows you to create even more impactful sound.

Steven Paul
Hi, I'm Steven Paul! I am dedicated to helping people learn more about subwoofers. My age is 49-year-old and passionate for helping others by doing detailed research, I really like working on SubwooferGuides.com because it gives me the opportunity to use my knowledge of research on Musical Guides. I have been researching about musical instruments for over 20 years and there is nothing that I love more than helping beginners get into the hobby of home theater audio. My goal with this site is to provide an unbiased resource where beginner's can come and find all the information they need to make educated decisions when shopping for their first subwoofer system.