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Sonos is a leading American audio technology company that is best known for pioneering wireless multi-room audio systems, which make it easy for listeners to stream music and other content throughout their homes. The company continues to innovate, creating wireless speakers, home theatre systems, headphones, architectural components, and integrated home audio solutions that revolutionise how people listen and connect to sound.

When shopping for a speaker or soundbar, you might encounter some words that sound more comical than technical. A tweeter? A woofer? What do birds and dogs have to do with producing a well-balanced sound experience?

As it turns out, these names are quite helpful in describing the function and sounds produced by the different components within a typical speaker enclosure. A tweeter is indeed like a bird, in the sense that it is small and designed to produce high-frequency sounds. Compare this to a woofer, which is bigger and produces deeper sound frequencies in the range of, say, a barking dog.

In this guide, we’ll focus on tweeters and the crisp, high end of the sonic range. These small but mighty pieces of hardware can fill a room with dazzling vocals, lead instruments, and other frequencies stretching towards the uppermost limits of audible sound.

In simplest terms, a tweeter is the part of a speaker responsible for producing higher-pitched sounds. Tweeters are specially designed to reproduce the higher frequencies of an electrical audio signal — and the higher the frequency, the higher the pitch you hear in your music.

Though different types of tweeters can be tuned to produce narrower ranges of audio frequencies, tweeters as a group typically produce frequencies within the range of 

. Hertz refers to the number of vibrations that occur in one second, and faster vibration speeds correspond to higher-frequency sounds. High-pitched vocals, crashing cymbals, and guitar solos are examples of sounds that fall within the lower end of a tweeter’s range (2,000 Hz). The higher end of the range (20,000 Hz) is associated with sounds that are barely even audible to humans, like dog whistles.

Tweeters are almost always the smallest speakers in an audio setup. Their small size is an important quality, as it correlates with the types of sounds they can produce accurately. Why? Because to produce these high-frequency noises, a speaker must be able to vibrate at rapid speeds. This is an easier job for smaller speakers like tweeters, which have a smaller surface area, lower mass, and other physical characteristics that allow the tweeter to move back and forth more freely. This back-and-forth vibration is essentially what produces sound, and faster vibrations translate to higher-pitched sounds.

Though you may have been unaware of their existence until just a moment ago, tweeters play an important role in most speaker setups. They’re built into the enclosures of many 

, where they’re responsible for reproducing the mid- and high-frequency sounds that cut through the audio mix — think vocals, lead instruments, and stirring string arrangements. In a home theatre speaker, tweeters handle many of the audio frequencies associated with 

Just as birds often sing in chorus, tweeters often work together to reproduce a particularly rich composition of higher frequencies. A speaker enclosure may house multiple tweeters, each of which serves a different role. Sometimes, the role a tweeter plays in a speaker configuration will determine its shape. A classical dome-shaped tweeter can produce a wide- and well-balanced range of sounds, while a directional horn-shaped tweeter can fire sounds into specific parts of a room to bring 

White Arc Ultra wall-mounted underneath a television

Person putting a record on a turntable, placed next to a white Era 300

How many tweeters should I look for in a speaker?

There’s no “magic number” of tweeters that translates to 

. The number of tweeters in a speaker depends on the type of speaker, its shape, and its intended use.

 includes four tweeters that work together to produce high and mid-range frequencies. A forward-firing dome-shaped tweeter creates a round and smooth centre image, while two side-firing tweeters create stereo separation. A fourth, horn-shaped tweeter is tilted upward to fire sound off the ceiling while playing 

Other speakers can achieve a similarly impressive performance with a different configuration. A cluster of seven tweeters in 

, for example, projects high frequencies towards the listener, the sides of the room, and ceiling for a beyond-immersive home theatre experience.

In any case, keep in mind that the number of tweeters isn’t the only factor to consider. Other factors — like the shape and size of the tweeter and how it’s angled relative to the speaker’s other components — also play a role.

Of course, a speaker setup should be able to reproduce sound evenly across a wide band of audio frequencies — not just the mids and highs. For the spectrum of frequencies below 2,000 Hz, tweeters won’t cut it. Such frequencies require larger components designed to handle lower speeds of vibration.

Speakers that handle the broad middle range of audio frequencies (typically between 20 Hz and 2,000 Hz) are called 

. Woofers are generally at least several inches larger than tweeters, and their bigger size corresponds with deeper and heavier sounds.

Unlike tweeters, woofers often require a large-ish external housing. This has to do with the nature of producing lower frequency sounds, which requires moving a larger volume of air back and forth. Without more space to displace air efficiently, the soundwaves a woofer produces can be compressed and distorted.

 comprises both tweeters and woofers, which work in a synchronised fashion to reproduce sound as clearly and as accurately as possible. Reproducing sounds on the lowest end of the audible frequency spectrum — around 20 Hz to 120 Hz — typically requires a third type of speaker known as a 

 are often housed in separate enclosures better suited to limiting distortion and enhancing the depth and richness of bass sounds.

Experience higher highs and lower lows with Sonos

 can faithfully reproduce sounds across the entire band of human hearing — from the booming low end of an explosion to the crisp pop of a snare drum. 

 speakers feature precision-tuned speaker configurations that seamlessly blend high, mid, and low frequencies into a unified sound experience. Woofers such as 

 bring bold bass to your home theatre setup in a size that won’t crowd out your other components. If you have any questions or need help selecting a speaker, get in touch with a Sonos expert by 

Person lounging while listening to a black Five & Sub

What Are Speaker Tweeters (And What Do They Do?)

No one will ever accuse a subwoofer of being too shy. Designed to handle the lowest frequencies of audio in films and music, these loudspeakers literally make their presence felt with every bass-filled rumble and roar. Even so, few subwoofers have ever packed a punch in such style as the latest upgrade to the Sonos home theatre experience: Sub 4.

If you’re chasing a more cinematic sound experience that does real justice to the rumbles and roars sitting at the lowest end of the audio mix, our newest subwoofer is the fastest way to get there. It has everything fans loved about its best-selling predecessor, Sub Gen 3 — with a few subtle updates. Most notably, Sub 4 better complements our current portfolio’s blend of peak performance and attractive design, thanks to its improved processing power and a matte finish that it now shares with the other speakers in our lineup.

Fans of Sonos subwoofers will appreciate that Sub 4 still delivers bass you can feel in your entire body. What’s more, it’s as easy as ever to set up and use, with the option to stand it upright or lay it on its side depending on your desired aesthetic configuration.

Sub 4 features a more powerful CPU than the previous generation. This allows it to communicate efficiently and effectively with the other components in your 

 — and, ultimately, to deliver an incredible sense of depth and dimension across the lowest frequency sounds in an audio mix.

Of course, we built Sub 4 with not only power but also longevity in mind. Rest assured that it will be capable of receiving the latest software updates and features from Sonos for years to come.

At first glance, the visual updates to Sub 4 may appear subtle. The biggest update is an all-new matte finish available in both black and white. This stands in contrast to the high-gloss finish of the previous generation, which was unique in the Sonos lineup and may have disrupted the aesthetic continuity of a full speaker setup. In any case, you’ll likely find Sub 4 to be a slightly more understated addition to your home theatre system.

Black Five placed on a table with a black Sub 4 placed on the floor next to it

As noted above, Sub 4 combines the best of the old and new. Some things made sense to carry over from Sub Gen 3. Industry-leading bass? Tick. Iconic design? Tick. Perhaps the most relevant continuation is the overall acoustic architecture, which is part of what allows for Sub 4’s backwards compatibility with previous subwoofer generations.

But Sub 4 isn’t only interested in looking backwards. On the contrary, its considerably upgraded processing power and evolving design puts a firm focus on the future. If you’re interested in comparing our latest subwoofer generation with previous iterations, check out our 

 for a more detailed breakdown of tech specs.

Experience bass like never before with Sub 4

 without a premium subwoofer to handle the pulse-pounding bass frequencies? Technically, yes, but nothing can add oomph to your 

 quite like Sub 4. If you’re interested in adding Sub 4 to your home theatre setup, get in touch with a Sonos expert by 

White Sub 4 placed on the floor underneath a wall-mounted white Arc Ultra

Introducing Sub 4 - Our Latest Subwoofer

If you’re ready to create a pitch-perfect vibe for your business, 

 can help you get there — and sooner than you might think. A Sonos Pro subscription comes with everything your business needs to sound great, even if your existing sound system isn’t outfitted with Sonos wireless speakers.

You can make virtually any sound system Sonos-compatible in just a few steps. If you don’t have Sonos wireless speakers, or if your system mixes and matches Sonos speakers with wired audio equipment, you’ll need to add 

 to connect all of your components. Once you’re set up, you can easily expand your sound system by adding new Sonos hardware.

Does Sonos Pro work with a non-Sonos sound system?

Sonos Pro requires a Sonos-compatible system to work, but this is easier to achieve than you might think. It certainly does 

 require replacing all of your existing speakers and audio equipment with Sonos hardware. All you’ll need is a system that can be connected with the Sonos app.

There are a few ways to make your sound system Sonos-compatible.

 to the Sonos app directly over WiFi. If you have multiple Sonos speakers or components, you can create a system by grouping them all together in the app.

You can also connect a non-Sonos amplifier or receiver to the Sonos app via 

, a device that allows you to seamlessly incorporate wired speakers into your Sonos system. For business owners who want to get started with Sonos Pro right away but lack existing Sonos hardware, this is an easy and cost-effective option.

Is Port the only Sonos device I need to set up Sonos Pro?

In most cases, yes. Port connects directly to the wired amplifier or receiver that powers your existing sound system. Once you’ve connected Port, you can create a new Sonos system over WiFi and — boom — you’re ready to get started with Sonos Pro.

One caveat: Port cannot power audio equipment on its own. This shouldn’t be a problem if you’re connecting Port to your existing sound system, which should already include a 

 or receiver. But if you’re creating a system and only have 

, such as in-wall or in-ceiling speakers, you’ll need 

Amp basically works the same way as Port, but, as an amplifier, it can power your audio equipment.

Black One on a shelf above a coffee machine

Person using a tablet to play music on a black Five

How to make your existing sound system compatible with Sonos Pro

In this step-by-step guide, we’ll assume that you already have existing speakers and hardware that fit your retail situation. If you don’t, you can get in touch with a Sonos expert by 

. We can help you select the wireless speakers and hardware you need to 

set up a Sonos system in your retail store

1. Connect Sonos Port to your existing audio equipment

Port is the easiest way to connect your hardwired audio components to a Sonos system. If you need help with installation, you can 

If you have multiple business locations, you’ll need a separate Port for each business location. This allows you to connect your local speakers to Port via a wired connection. Then, once you’re 

 all of your locations from a single dashboard.

Alternatively, you can create a Sonos system with a wireless speaker such as 

. These options will sound great on their own or paired with other Sonos speakers, but they won’t connect to your existing hardware.

You’re now ready to get started with Sonos Pro. We designed Sonos Pro to scale with your business. With 

 to choose from, you can focus on improving your customer experience and boosting productivity or fine-tuning your brand across a wide range of locations.

 ($35/month per location) includes everything you need to get started, from 

 by independent artists to priority support whenever you need it. Other features include scheduled and automated playlists, volume limits, admin and access control, and the ability to curate your own approved music library.

 ($70/month per location) takes the brand experience to the next level. It includes everything you get with Essential, plus hundreds of stations with commercially licensed music by the top artists you know and love.

 and get started with Sonos Pro. Once you’re connected, you’ll be ready to stream and manage the music at all of your business locations from a single dashboard.

3. Add Sonos wireless speakers to your system over time

Now that you’re set up with Sonos Pro, you can add new Sonos speakers to your system as your business grows and needs evolve. It’s easy to add new Sonos hardware to your system via the 

 In fact, it’s the same way you initially set up Port — simply go to the 

This flexibility may prove especially useful as you expand your business to new stores or locations. With our 

, you can pick out Sonos products that fit the specific layout and requirements of your new locations.

Person preparing food below a white, wall-mounted One

Sonos Pro is a sound solution that scales with your business

If you’ve been unsure of whether you have the components necessary to get started with Sonos Pro, we hope we’ve set your mind at ease. With just one additional device, you can make your system Sonos-compatible and elevate your business’s sound experience today.

But our support doesn’t stop with setting up your Sonos Pro subscription. On top of music and controls that deliver a 

 across all of your locations, you’ll get access to priority support that can help you ensure best-in-class experience that will keep your customers coming back for more.

 to get started. If you’re not sure which plan is best, your business might benefit from a more custom Sonos Pro solution. 

Submit your information via our online form

, and a Sonos expert will get in touch to guide you through the process.

*Sonos Pro is only available in certain territories.

Two people using the Sonos app on a tablet to play music on a wall mounted black Five

Music for Business: How To Upgrade Any Speaker Into a Sonos System for Sonos Pro

Cleaning your headphones seems like a simple task in theory, but it can be stressful in practice. Many people count their headphones among their most prized possessions, and the idea of damaging them with harsh solvents or excess moisture is simply too much to bear.

But cleaning headphones is actually easy. You can start by getting in the habit of wiping them down daily with a clean, lint-free cloth. For tough smudges and lingering odours, a simple cleaning solution with water and mild soap should do the trick.

Cleaning your headphones does not require an extensive (or expensive) list of supplies. Chances are, you already have everything you need at home:

Tap water should work fine in most places, though you may want to use distilled water if you only have access to hard tap water, which may leave behind mineral deposits if you let your headphones air dry.

 Opt for a mild washing-up liquid and avoid any soaps that contain dyes or fragrances, as these are more likely to damage your headphones (or leave behind a lingering smell of pine or citrus).

This can be a normal flannel, a microfibre cloth, or any other type of soft and non-abrasive material. Just make sure it’s clean and avoid materials that may scratch up your headphones or leave behind residue.

And… that’s it! You don’t need any special soaps or cleaning supplies. You certainly do not need harsh chemicals or solvents like isopropyl alcohol or paint thinner, and you should in fact steer clear of these at all costs. Not only are they unnecessary, but they may well ruin your headphones’ finish.

Pair of black Sonos Ace headphones with the ear cups removed

How to clean headphones: A step-by-step guide

Still nervous about cleaning your headphones? We get it. But if you follow these five simple steps, you’ll have a sparkling pair of headphones before you know it.

 headphones in mind, but they should apply to any pair of 

. (To clean in-ear earbuds, refer to your earbuds’ user manual, as they may contain detachable silicon or foam components that are not safe to disinfect with alcohol.)

1. Turn off and/or unplug your headphones

 water, like the amount we’re using — do not mix. You can avoid unnecessary damage or short circuits by turning off and unplugging your headphones prior to every cleaning session.

Now it’s time to mix your water and mild soap to create a cleaning solution. For a mild solution that’s still effective, the right ratio is something like:

Don’t worry if your measurements aren’t exact — the point is that you really don’t need much soap to mix an effective solution. Just a few drops should do the trick. On a related note, you shouldn’t need more than one cup of water for a single pair of headphones.

A typical pair of headphones has different types of surfaces you’ll need to contend with while cleaning. The hard and non-porous external surfaces (plastic, metal, etc.) are the most straightforward to clean. Start by wiping these surfaces down with a dry, clean cloth. To remove tough smudges, you can dampen the cloth with your mild soap solution.

By “dampen”, we don’t mean “soak.” Your cloth should be damp enough to clean effectively, but not so wet that it leaves droplets of water behind. In any case, take care to avoid any openings or electrical inputs as you clean. If you see a crumb or piece of lint stuck in an input, try to remove it with a soft brush. Just be careful, as you may risk pushing it further in.

Next, remove the ear cushions. This allows you to clean them thoroughly, without risk of damaging the underlying headphone speakers.

You can clean the ear cushions with the same solution and method you used for the non-fabric surfaces. Just keep in mind that they may be constructed from material that’s a bit more delicate, so go a bit easier on them. The ear cushions on Sonos Ace are made from memory foam and wrapped in plush leather, which won’t get damaged by a bit of soap and water.

Before reassembling your headphones, leave the ear cushions off to dry separately, if needed. Some fabrics can soak up water, and it’s best to keep these away from your headphones’ electrical components until they’re totally dry. Air drying is fine, though you can pat lightly with a towel to speed things along a bit.

Once your cushions are dry, pop them back on and enjoy!

Person listening to black Sonos Ace headphones outdoors

Even with proper cleaning, ear cushions will eventually show signs of wear and tear. In fact, cushions are often the first headphones component to break down, as they’re generally constructed from softer fabric and experience regular friction with the ear.

This is an annoyance you simply have to live with if you own a pair of headphones that doesn’t come with replaceable cushions. But as avid headphone wearers ourselves, we designed Sonos Ace with 

 that easily attach with magnets. So, if this was ever a sticking point in your quest to 

The biggest issues often arise when people 

 want their headphones clean and take things a bit too far. When cleaning your headphones, avoid the following at all costs:

Harsh chemicals and alcohol-based solvents

. These are unnecessary and may damage the finish on your headphones.

Yes, this includes submerging your headphones in water. Don’t use any more water than you need, as it may get into the electrical components and affect performance.

. This only applies to headphones with built-in microphones, which can be damaged by applying too much air pressure.

We’ve always designed Sonos products with audio quality in mind. But with Sonos Ace, we also considered the day-to-day aspects of 

wearing your favourite pair of headphones

, 30-hour battery life and pillow-soft ear cushions, you may never want to take them off. Other highlights include:

A custom-designed driver takes full advantage of the over-ear footprint to deliver 

 in a hyperrealistic, three-dimensional soundstage

Effortlessly swap TV audio with a compatible 

Add it all up, and you’re left with the cleanest sound you’ve ever experienced in a pair of headphones — no soap or water required.

Person taking black Sonos Ace headphones out of the case

The Beginner’s Guide to Cleaning Headphones

Though some listeners prefer their shelves of vinyl and stacks of CDs, most music libraries now exist in digital file formats that are more convenient to store and easier to access on the go. But it’s not particularly helpful to simply describe an audio file format as “digital” because that can mean different things—and different levels of sound quality. Audio files in fact come in multiple formats, and not all of these formats are made equal.

One of the major differences between audio file formats relates to a process called 

. As its name implies, compression makes file sizes smaller. This can be useful for saving storage space on a hard drive, but it can also have consequences for the quality of the original audio recording.

The compression process essentially reduces the amount of data contained in an audio waveform, and this loss of data may result in noticeable loss of quality to the listener. Some audio file formats that undergo this 

 type of compression include MP3, AAC and Ogg/Vorbis.

 diminish audio quality. Some newer compression technologies manage to shrink the file size while retaining all of the audio information from the original recording; audio files that undergo this type of compression are known as 

Finally, there are audio files that undergo no compression. These 

 audio files are generally much larger in size, but they avoid the audio quality issues that plague some compressed formats.

. Let’s dive deeper into each type and explore some common examples.

Lossy audio files are compressed in such a way that some of the original recording’s fidelity is lost. You may find it strange that 

 would prefer a lossy audio file to one that retains all of the richness and complexity of an uncompressed file. But lossy files tend to take up much less bandwidth and storage space, which makes them a good compromise for music-streaming services.

And before you think ‘lossy’ automatically means ‘bad quality’, consider whether your ears will even notice the difference. Many people find it difficult to detect any difference between CD quality (16 bits/44.1 kHz) and higher bitrate standards, which some lossy file formats technically achieve. If it makes no difference to your ears, it makes sense to opt for a smaller file size when possible.

On that note, let’s look at four lossy audio file types you may come across.

The MP3 audio file format became immensely popular in the early 2000s. At the time, it was among the most efficient ways to get an audio track from a CD and store it on a digital hard drive or on a ‘burned’ CD. The MP3 file format is much smaller than that of an uncompressed CD audio track.

MP3s were revolutionary for their time and led to a huge leap forward in portable listening, as they were the basis for early digital audio players. You may even still have some MP3s stored on your hard drive, but the format is lossy and some people may be able to pick out the difference between an MP3 and a CD-quality track.

AAC stands for Advanced Audio Coding, which is another lossy coding standard used in audio track compression. AAC quality doesn’t rise to the level of 

 but it is a step up from the MP3, delivering better quality at a comparable file size.

Though perhaps not quite as ubiquitous as the MP3, the AAC format is everywhere and you’ve probably encountered it yourself. It was the preferred format of the iTunes music store and continues to be available on AAC-compatible devices.

OGG is a versatile and open-source multimedia compression technology. You may have heard of Ogg/Vorbis, which is an OGG format typically used for audio compression. Spotify frequently uses this format for its streams.

Though lossy, OGG audio files retain pretty good sound quality. Their size and quality are both advantages over other lossy compression formats, and they are widely used for streaming audio over the internet.

WMA is short for Windows Media Audio—a hint that this is a proprietary format developed by Microsoft. Though it achieves slightly better quality than MP3, the lossy WMA format is not widely compatible with non-Microsoft devices and thus has limited utility.

Person seated in a chair listening to a white Era 300 placed on a console

 are those that are compressed in such a way that the quality of the original recording essentially stays intact. In other words, no discernible aspect of the audio is lost in the process of compression.

Just be aware that ‘lossless’ does not mean uncompressed. A lossless track is still compressed, though it uses a data algorithm to retain all of the original recording’s quality. Lossless quality generally equates to about 16 bits/44.1 kHz or higher, which means it sounds at least as good as a CD.

Below are some of the most common lossless file types.

FLAC stands for Free Lossless Audio Codec. A ‘codec’ is basically a process that compresses and decompresses digital files, so the name here basically says it all: This was developed as a free way to achieve lossless compression.

Many audiophiles consider FLAC the gold standard of digital audio formats, as it achieves a much smaller size than a raw uncompressed audio file without sacrificing any discernible audio quality.

ALAC stands for Apple Lossless Audio Codec. It was developed by Apple as a lossless successor to AAC. The company currently offers its entire Apple Music catalogue in ALAC resolutions ranging from CD quality to higher.

There is indeed a lossless alternative to the lossy Windows Media Audio format mentioned above. It isn’t as common as FLAC and Apple’s ALAC, and it doesn’t stand out in terms of compression efficiency or audio quality. With that said, this WMA format does offer a lossless audio experience to (primarily) Microsoft users.

Person outdoors listening to Soft White Sonos Ace headphones

As the name suggests, uncompressed audio files do not undergo any type of compression. This means that there is no data lost in the process of compression, and every aspect of the original recording is preserved.

Many audiophiles hold uncompressed file types up as the holy grail of digital audio, but these file types come with a few of their own disadvantages. For one, they tend to be quite large; if you store loads of uncompressed files locally, you’ll likely need additional hard drive space. Their cumbersome size also means it may be difficult to find truly uncompressed files on many streaming services.

Let’s check out three of the most common uncompressed audio formats.

WAV (Waveform Audio File Format) is a hi-res audio format used for encoding CD audio data. Though WAV files can technically store compressed data, they are typically used for uncompressed audio.

What Are Speaker Tweeters (And What Do They Do?)

Introducing Sub 4 - Our Latest Subwoofer

Music for Business: How To Upgrade Any Speaker Into a Sonos System for Sonos Pro

The Beginner’s Guide to Cleaning Headphones

Beginner's Guide to Audio File Types (And Which to Use)

What Is Lossless Audio — And How To Stream It at Home

Update on the Sonos app from Patrick

What Is a Speaker Amplifier (And Do You Need One)?

How to Hear Dialogue Better When Watching TV Shows and Films

The Ultimate Guide to Wearing Headphones

Things To Consider When Choosing New Headphones

Which Is Best: Over-Ear vs. On-Ear vs. In-Ear Headphones

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