BPM Skills is reader-supported. When you purchase through links on our site, we may earn an affiliate commission. Learn more

What Frequency Response Is Good for Speakers? (High vs. Low Explained)

What Frequency Response Is Good for Speakers_

Speakers are typically the only audio equipment needed in a home. Finding the ideal speaker to help you get the most out of your listening experience is challenging.

This statement—that good speakers equal good sound—is generally true.

Frequency responses evaluate whether and how well a piece of audio equipment reproduces each of these audible frequencies and whether it modifies the signal.

So what is a good frequency response for speakers? I will attempt to clarify that question and help you understand the frequency response range.

If you stick with us, we guarantee things will be a lot clearer by the conclusion of this article.


  • Understanding the frequency response is essential if you wish to understand music or any other type of audio content.
  • The ability of a speaker to reproduce a specific audio frequency spectrum does not define its performance or audio quality.
  • An excellent speaker produces high-quality sound if the speaker’s frequency range is between 20Hz and 20kHz and the graph closely resembles the ideal frequency response curve (flat curve).
  • Using a speaker system rather than a single speaker is preferable because the sounds your speakers must reproduce are rather complicated.

Table of Contents

Why Is Frequency Response So Important?

We can’t state that frequency response is the only thing that matters, but we can’t deny that it significantly impacts audio quality.

A good speaker would reproduce all the frequencies between 20 Hz and 20 kHz.

The speaker must be able to reproduce even the most complex sounds with different frequencies, and it must do it simultaneously and in a balanced manner.

Whether you’re working with speakers, microphones, headphones, amplifiers, or anything else, these audio devices need the appropriate response.

The best speakers have a flat frequency response. It’s not a good speaker if it causes the original track to lose some of its color or overall quality.

NOTE: The most common way to visualize the frequency response is with an oscilloscope that produces sine waves.

What Is an Audio Frequency Range?

The frequency range of a speaker is the range of certain frequencies it can reproduce.

If your speakers are not of the best quality, you will likely be unable to hear all the noises from the audio you wish to hear with your human hearing, especially the whole frequency range.

The average human audio spectrum is between 20Hz and 20,000Hz. The average adult’s upper limit of the human audio spectrum may be closer to 15kHz to 17kHz.

The lowest frequency your ears may hear is probably between 20 and 50 Hz, around the bottom end of the bass frequencies.

Speakers having a limited frequency range are unable to reproduce all sounds.

Lower frequencies are more of an issue because most speakers provide an appropriate response to upper frequencies.

Let’s look at how the audio spectrum is divided into frequency bands based on the high-low ratio.

NOTE: Various variables can impact most loudspeakers’ frequency response. However, it’s because of hardware restrictions related to enclosure materials and designs, impedance matching, driver size, etc.


Sub-bass frequencies range from 20 to 60 Hz.

Tones in this category are the deepest audible tones, which most of us cannot hear but feel due to the intense vibrations that propagate the sound waves.


It is likewise a low-frequency band, spanning from 60 to 250 Hz. This band is substantially more comprehensive than the preceding one.

These instruments can reproduce lower frequencies: saxophone, cymbals, trumpet, violin, clarinet, bass guitar, etc.

Low Midrange

The low middle band’s frequency ranges from 250 Hz to 500 Hz, yet these are still considered soft tones.

Various musical instruments can generate low frequencies, and some male and female voices are quickly recognized and heard.


Midrange frequencies are the ones that range in frequency from 500 Hz to 2 kHz.

These sounds are responsible for your overall perception of each song and melody, so they must be presented correctly. This group includes vocals, which should always be clean.

Upper Midrange

The upper midrange frequency ranges from 2kHz to 4kHz. Vocals are the most essential and visible sounds in this mix.

In terms of instruments, these tones can be supplied by rhythm and percussion instruments.

Lower Treble

If the frequency response is between 4 and 6 kHz, we’re talking about the lower treble band, which determines overall sound clarity.


The high frequencies go from 6kHz to 20kHz; as you can see, this is the broadest band in the frequency spectrum.

However, not many instruments can create higher frequencies, and not everyone can hear them. If not adequately replicated, the sound becomes distorted and unpleasant to listen to.

What Frequency Range Is Best for Speakers?

The preferred frequency response for speakers is 20 Hz to 20 kHz, yet low-quality speakers can potentially have poor sound quality.

A sound system can play sounds on the entire frequency range of the human ear with an ideal frequency response rate.

The output sound must match the original input audio signal in terms of quality and volume. Sound is reproduced correctly and without any quality loss on good speakers.

So, should you stick to the 20 Hz to 20 kHz range or look for flat response speakers?

NOTE: Flat response speakers are often made for a controlled environment. Because of the ambient noise at home, they don’t operate well.

Flat Response Speakers

We refer to speakers that play lossless audio in the 20 Hz to 20 kHz range as flat response speakers.

Flat-response speakers have the best frequency response. These speakers perform the best, which explains why studio speakers are so pricey.

When utilized at home, flat response speakers don’t work. They are intended for a regulated setting.

There is a lot of background noise in your home. Therefore it’s awful if you don’t raise or lower the volume of some sounds.

Since bookshelf speakers don’t have a flat speaker response, they can’t be used in studios.

Some low notes are performed louder than others, and vice versa for some high notes. In studios with no background noise, this is highly audible.

Bookshelf Speakers

A bookshelf speaker gives the sound extra life. At home, flat-response speakers would produce no sound.

The audio frequency range of most bookshelf speakers is 20 Hz to 20 kHz. Some low notes are played with an increased volume and high notes with a decreased volume.

Brands frequently adhere to this rule and focus on qualities like stereo sound, bass, sensitivity, etc., that most users value.

In light of this, the majority of the speakers you’ve seen while browsing does indeed cover the desired audio frequency range.

I’m referring to high-end, mid-range speakers. Cheap speakers from unknown brands are usually troublesome.

NOTE: Surround speakers are added to create the 3D listening experience in a surround sound setup.

How to Get a Good Frequency Response for Speakers

A speaker’s frequency response can make or break it. You would expect that, given the significance of this parameter, brands would include this graph in their datasheet.

Unfortunately, the frequency curve is not included by many brands and producers.

Tech reviewers are responsible for making the frequency response graph.

Therefore, finding the frequency graph of the specified speaker system would be ideal if you want to get new speakers for your home or a party.

Finding the speakers’ frequency response is the best approach to achieve this.

Frequency response measurements are performed by many independent tech reviewers, who also create the response graphs for many well-known speakers.

A good speaker system generally has a corrected frequency response curve that hovers around the 80dB sound pressure level without quite varying over the entire frequency band.

Additionally, you are set to go if the frequency range includes the audible range.


Reading the commonly asked questions below, you may learn more about the preferred frequency response for speakers.

What Is a Flat Frequency Response?

A good frequency response does not change the volume of the source’s bass, middle, or treble, so the output signal is equal to the input signal. It is referred to as a completely “flat” response.

Does Speaker Placement Affect Frequency Response?

Yes. Placing your speakers near the back wall will provide more bass, while placing them further away will reduce the low end you hear but should give a more realistic stereo image.

What Is the Purpose of a Frequency Chart?

The distribution of one category variable can be shown using frequency tables, pie charts, and bar charts.

All potential values of the variable are displayed in these displays, along with either the frequency (count) or relative frequency (percentage).

What Is the Purpose of Center Channel Speakers?

The most crucial speaker in a surround sound arrangement is the center channel speaker because it handles the bulk of the work.

Which Is Superior? 3-Way or 2-Way Speakers?

Three-way speakers are superior because they have a dedicated midrange driver and offer more accurate and flat curves than their two-way equivalents.

However, it mostly depends on the internal components, materials, crossover setup, and frequency response; hence, a high-quality two-way speaker can beat an inefficient three-way.

Why Are There Multiple Drivers in Speakers?

Increasing the displacement volume of the woofers, which enables the speaker to have a more comprehensive frequency range, is the primary benefit of employing multiple speaker heads.

The frequency range that each set of drivers (woofer, mid-woofer, and tweeter) excels at varies.

Final Thoughts

You should now have a good concept of what frequency response is and why it is significant.

The frequency response specification, which contains the range and response graph, is critical in determining the content and quality of sound.

The frequency response is especially essential in recording studios. Even if the frequency response is good, inexpensive speakers distort the sound.

Even though most speakers cannot attain a flat frequency response in real life, they do a good job reproducing sounds as precisely as possible.

So, as long as the speakers cover an extensive frequency range of the human hearing spectrum, you can find the optimum frequency response speakers better.

So now it’s time to settle back and unwind while picking the ideal speaker. That concludes this post. I hope I was able to answer your questions.

About the author


After becoming obsessed with the beats that were the soundtrack to his youth, Nick became a student of hip hop, digging for vinyl records, looking for the perfect break. Before he got his hands on an MPC sampler, he would mash these records, beats, and breaks into mixtapes and live DJ sets.