Sonos Sub Mini black matte

Name: Sub Mini black matte
Brand: Sonos
SKU: 8717755779090
Price: 399.0 EUR
Availability: InStock
Rating: 4.9 (33 reviews)

(33 customer reviews)

Finish : Black

Overview

Launched in October 2022, the Sub Mini rounds out the Sonos subwoofer lineup with a smaller form factor and a more accessible price point. This cylindrical model features two 15 cm woofers capable of reaching down to 25 Hz and integrates wirelessly into the Californian brand’s multiroom audio ecosystem. Designed for small to medium-sized rooms, it’s primarily intended for owners of Beam soundbars or Ray, as well as One, One SL, Era 100, or IKEA’s SYMFONISK speakers.

A cylindrical design that breaks the mold

The Sub Mini adopts a cylindrical silhouette measuring 30.5 cm in height and 23 cm in diameter, with a modest weight of 6.35 kg. This shape contrasts with traditional rectangular subs and with Sonos’s larger, squarer Sub 4 (40.2 cm per side, 11.79 kg).

The central oblong opening runs through the sub from side to side to facilitate the airflow needed to produce low frequencies. Lean in slightly and you’ll spot the two speaker diaphragms facing each other inside.

The matte finish, available in black or white, helps the Sub Mini visually blend into the room. The only caveat: the sub must be positioned vertically; its cylindrical geometry rules out horizontal placement or sliding it under furniture.

White cylindrical plastic subwoofer with oval side port, on the floor near a gray sofa, angled view

Two face-to-face woofers to cancel vibrations

The Sub Mini uses a technical principle already employed by its big brother: two 15 cm woofers mounted in opposition. These drivers face each other inside the cabinet, creating a force-canceling effect. When one woofer pushes air forward, the other makes the same motion in the opposite direction. The mechanical forces cancel each other out, eliminating unwanted vibrations that could cause buzzing or distortion.

Each woofer has its own Class D digital amplifier, specifically tuned to the cabinet’s acoustic design. The enclosure is sealed, with no port, which limits distortion and improves bass precision.

Advanced digital signal processing (DSP) maximizes low-frequency response and compensates for physical limitations related to the compact size. In practice, the sub delivers convincing physical impact on explosions and punchy bass, even if it seldom truly reaches the claimed 25 Hz.

Bright living room in overview, light wood flooring, gray fabric sofa, TV on wooden cabinet, brick fireplace

Smart tuning with Trueplay

Setup takes just a few steps via the Sonos app. Once powered on, the sub is detected automatically and pairs with the chosen speaker or soundbar. EQ is applied automatically: the system adjusts the crossover to ensure a smooth transition between the bass handled by the sub and the mids handled by the main speaker. This division of labor also boosts overall performance: freed from low-frequency duties, the soundbar can focus its resources on mids and highs.

For iOS users, Trueplay takes tuning a step further. This technology analyzes the room’s acoustics by playing test tones picked up by the iPhone or iPad microphone. The algorithm identifies reflections, resonances, and weak points, then automatically adjusts EQ for the Sub Mini and the paired speaker to compensate for these issues.

Manual controls remain available in the app: independent bass level from the master volume, Loudness function (which boosts bass and treble at low volume), or EQ adjustments.

Matte black soundbar on light wood furniture, cylindrical black subwoofer with side port, top-down view

A natural fit for the Sonos ecosystem

The Sub Mini integrates exclusively with the Sonos ecosystem running on the S2 app. It cannot connect to third-party equipment, but it ensures perfect compatibility with Beam, Beam Gen 2, Ray, Arc, and Arc Ultra soundbars, as well as One, One SL, Era 100, Era 300, and SYMFONISK speakers.

Connection is via Wi‑Fi 5 GHz (or 2.4 GHz), ensuring a stable link with no perceptible latency. An Ethernet port is also available for a wired connection to the router.

Notable difference from the Sub 4: the Sub Mini cannot be paired with a second sub. The higher-end model allows one or two additional Subs to increase sound pressure, but the Sub Mini must remain solo within its zone. You can, however, use multiple subs in different rooms, with each Sub Mini associated with its own speaker group.

Nighttime living room with a purple sofa and wooden floor, TV on a wooden stand, black cylindrical subwoofer in the foreground

More compact yet just as convincing as the Sub Gen 4

Launched in 2024, the Sub 4 measures 40.2 x 38.9 cm and weighs 11.79 kg. It features two elliptical woofers measuring 12.7 x 20.3 cm, a more powerful processor, and 50% lower standby consumption. It can be positioned upright or laid flat, offering greater flexibility.

At moderate volume, the Sub Mini behaves very similarly to the Sub 4 in terms of firmness and precision. It’s at high volume and in large rooms that the gap widens: the Sub 4 has more power in reserve. Some users even find the Sub Mini more musical for listening in medium-sized spaces.

The Sub Mini is suitable for rooms under 25 m² and for compact setups. For a home theater with Arc or Arc Ultra in a large living room, the Sub 4 remains the better choice.

Bright living room, overview, brown leather armchair with footrest, large white windows, multicolored rug

What the press says

The Sub Mini can be showy if that's what you're looking for, but above all it's a complete subwoofer that goes deep in frequency and complements a Sonos soundbar admirably well. Far from monotonous, the bass delivered is articulate, with nuance or impact when needed.

Automatically translated — Show original (French)

Le Sub Mini peut être démonstratif si c’est ce que l’on recherche, mais c’est surtout un caisson complet qui descend bas en fréquence et qui complète admirablement bien une barre de son Sonos. Loin d’être monotone, le grave délivré est articulé, avec de la nuance ou de l’impact quand il le faut.

Documentation

Documentation (brochure)
French

Technical Specifications

Audio and Performance

Amplification: 2 Class D digital amplifiers, tuned for optimal sound
Woofers: 2 x 15 cm woofers, positioned face-to-face to reduce vibrations
Design: Sealed enclosure to minimize distortion and enhance bass
Frequency: Goes down to 25 Hz for deep bass

Audio Features

Automatic equalization
Manual settings: adjust bass, treble, and “Loudness” function via the Sonos app
Trueplay: optimizes sound according to your room’s acoustics (iOS required)

Physical Characteristics

Dimensions: 305 x 230 x 230 mm
Weight: 6.35 kg

Connectivity

Wi-Fi: compatible with 2.4 / 5 GHz (802.11 a/b/g/n)
Ethernet: 10/100 port for wired connection

Power and Environment

Voltage: 100-240 V, 50/60 Hz
Operating temperature: 0 to 40 °C

Box Contents

Sonos Sub Mini
Power cable (2 m)
Documentation: quick start guide, legal information, warranty

Frequently Asked Questions

Can you use two Sub Minis in the same room?

No. Unlike the Sub Gen 3, which allows multiple subs to be paired, the Sub Mini can only be associated with a single speaker or soundbar per zone. Sonos regularly receives requests to enable this feature, but synchronizing two subs in the same space presents complex technical challenges. You can still install multiple Sub Minis in different rooms, each linked to its own speaker group.

Does the Sub Mini work with all Sonos speakers?

The Sub Mini connects to Sonos products compatible with the S2 app: Beam, Beam Gen 2, Ray, Arc, and Arc Ultra soundbars; One, One SL, Era 100, and Era 300 speakers; and IKEA’s SYMFONISK speakers. It’s not compatible with older products that only run on the S1 app (Connect, Port, or the first-generation Play models).

What’s the difference between automatic tuning and Trueplay?

Automatic tuning kicks in as soon as the sub is connected. It adjusts basic EQ and splits frequencies between the Sub Mini and the paired speaker. Trueplay goes further by analyzing the room’s actual acoustics using the microphone of an iOS device. It identifies reflections, resonances, and acoustic flaws, then finely adapts the sound to compensate for these characteristics. Trueplay isn’t essential, but it significantly improves the final result, especially in complex or very reverberant spaces.

Is the Sub Mini suitable for music or only for movies?

The Sub Mini works equally well for music and home theater. Several users even find it more balanced and musical than the Sub Gen 3 in stereo setups (two One or Era 100 speakers). For music listening in a medium-sized room, the Sub Mini adds depth and body without overpowering the rest of the spectrum, allowing the speakers to focus on mids and highs. The result is a broader, more nuanced soundstage.

What room size can the Sub Mini handle?

Sonos recommends the Sub Mini for small to medium-sized rooms, generally up to 20–25 m². Beyond that, or for very high listening volumes, the Sub Gen 4 offers more headroom. That said, many users report good results with the Sub Mini in medium spaces, even paired with an Arc soundbar, provided you don’t seek very high sound pressure levels. Placement also affects effectiveness: positioned in a corner, it benefits from wall reinforcement to amplify the bass.