Sonos SUBG3US1BLK Subwoofer
- Subwoofer
- 15.8 inches
- 245 watts
- Sonos
- Better rated than 68%
- More reviewed than 96%
A Wi-Fi connected Sonos subwoofer built to slot into an existing Sonos system, best suited to buyers already inside that ecosystem.
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How it ranks among the 74 subwoofers we track
4.7★ across 1,900 Amazon ratings, Bayesian-smoothed toward the category average.
1,900 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
Modest tracked demand last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 74 subwoofers we track - how the scorecard works · full subwoofers data report. Confidence: high - strong rating volume and complete data.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
A black Sonos subwoofer rated at 245 watts, built for floor standing placement and wireless connection into a Sonos Wi-Fi speaker system.
Sonos subwoofers are designed to join a Sonos speaker or soundbar over the same Wi-Fi network rather than a wired RCA connection, which is consistent with the Wi-Fi only connectivity listed here. The 245 watt rating and floor standing mounting point to a unit meant to sit on the floor near a TV or listening area rather than tuck onto a shelf. A couple of the listed figures, including driver size and weight, do not line up cleanly with the product's stated dimensions and are left out here rather than repeated as fact.
- Black finish
- Floor standing mount
- Wi-Fi connectivity
- 245W rated power
Who it's for
Fits households already running Sonos speakers or a Sonos soundbar and wanting to add low end wirelessly without new cabling. Not a fit for anyone wanting a subwoofer that connects by RCA or line in cable, since this one is Wi-Fi only.
Strengths and trade-offs
Drawn from this product's published specifications.
- Wireless Wi-Fi connection to Sonos system
- Floor standing design
- 245W power rating
- Wi-Fi only, no wired input
- Requires an existing Sonos speaker or soundbar to pair with
Performance notes
At 245 watts and built for floor placement, the sub is sized to sit near a TV or seating area and join the rest of a Sonos system over Wi-Fi rather than a cable run. Because it pairs wirelessly, setup runs through the Sonos app rather than a physical hookup to a receiver.
Specifications
| Brand | Sonos |
|---|---|
| Model | SUBG3US1BLK |
| Dimensions & fit | |
| Driver Size | 15.8 inches |
| Weight | 15467 pounds |
| Dimensions | 15.3 × 6.2 × 15.8 inches |
| Power & efficiency | |
| Power | 245 watts |
| Construction & materials | |
| Color | Black |
| Compatibility & installation | |
| Connectivity | Wi-Fi |
| Mounting | Floor Standing |
| Other details | |
| Brand Tech | Sonos |
| Speaker Type | Subwoofer |
Other Sonos subwoofers
How it compares
This product against the closest alternatives we track in subwoofers.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Sonos SUBG3US1BLK SubwooferThis product | 4.7 / 5 | 1,900 | 4.0 / 5 |
| Klipsch R-12SW SubwooferKlipsch | 4.8 / 5 | 5,723 | 4.1 / 5 |
| Audioengine S8 SubwooferAudioengine | 4.7 / 5 | 758 | 3.9 / 5 |
| Edifier T5 SubwooferEdifier | 4.4 / 5 | 1,800 | 3.8 / 5 |
| JBL SUBBP12AM SubwooferJBL | 4.6 / 5 | 455 | 3.8 / 5 |
Similar subwoofers from other brands
Questions about the Sonos SUBG3US1BLK
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
Does the Sonos Sub SUBG3US1BLK connect by cable or Wi-Fi?
It connects over Wi-Fi as part of a Sonos speaker system, not by wired input.
Is this Sonos subwoofer meant to stand on the floor?
Yes, it is listed as a floor standing unit.
What is the power rating of the Sonos Sub?
245 watts.