Sonos wireless subwoofer Sub Mini

Its dual inward-facing woofers are designed to cancel force against each other, helping reduce distortion while adding deeper bass to compatible Sonos listening setups. That can bring more weight to a movie soundtrack or game without relying on the soundbar alone.

The Sub Mini is a compact wireless subwoofer in white, with a sealed cabinet and two custom 6-inch woofers. Sonos says advanced processing helps produce low frequencies associated with a much larger subwoofer.

It pairs with Beam or Ray, and the product listing also names Arc Ultra. Trueplay adjusts the bass for your room, including placement next to a wall, but requires a supported iOS device.

Best use cases

This model is aimed at adding low-end depth to TV, movie, and game audio in a Sonos setup. Picture a quiet dialogue scene that suddenly gives way to a rumbling soundtrack: the Sub Mini is intended to make that shift feel fuller, rather than leaving the soundbar to handle the entire presentation. It can also suit someone who wants a dedicated bass speaker without choosing a larger subwoofer format.

Compared with using a Beam or Ray on its own, adding a subwoofer gives bass its own component. The tradeoff is that this is still a compact model, and the supplied information doesn’t specify output levels or room-size guidance. If your priority is the strongest possible bass for a large space, compare larger-subwoofer options before deciding.

Product specs

The Sub Mini has a white finish, WiFi connectivity, a sealed enclosure, and dual custom 6-inch force-canceling woofers. Trueplay room tuning is included to adapt bass to the room’s acoustics, a supported iOS device is required for that feature. The listed compatible products include Beam, Ray, and Arc Ultra.

One practical detail stands out: Trueplay’s iOS requirement matters if you want to tune the bass rather than use the speaker without that setup step. The listing doesn’t provide dimensions, weight, or a stated bass-output range, so those details can’t be used here to judge how it will fit a particular room. Worth considering if you already use one of the listed Sonos soundbars and want a dedicated, compact way to add bass.

Where it shines

The inward-facing woofers and sealed cabinet are the distinctive design choices. Sonos says their force-canceling arrangement neutralizes distortion, while processing enhances bass response. Trueplay is intended to help avoid bass that sounds harsh, muddy, or flat as room acoustics change. That’s useful if the subwoofer has to sit near a wall rather than in an idealized open spot, although the result will still depend on the room and the rest of the system.

What matters more to you: adding low-frequency weight, or getting the most bass output you can? The Sub Mini’s appeal is its compact format and integration with the listed Sonos soundbars, not a stated performance figure that can be compared directly with larger models. Without having tried it, the useful distinction is the design and tuning approach, not a promise about how forceful it will sound in your room.

When it makes sense

Choose it if your Beam, Ray, or Arc Ultra setup needs fuller bass for shows, films, and games, and you value a compact wireless component. It may also make sense when placement is constrained, since Sonos says Trueplay can account for room acoustics even when the unit is next to a wall.

It may not suit you if you don’t have access to a supported iOS device and room tuning is important to your decision, or if you’re shopping primarily for maximum bass in a demanding space. The product information gives no room-size or output figures to settle that question. For a straightforward upgrade to a compatible soundbar setup, the Sub Mini’s purpose is clear, for a high-output installation, compare the available specifications of larger alternatives first.