Best Subwoofers for Soundbars: 8 Wireless and Wired Picks (2026)

A slim soundbar can handle dialogue and music, but it rarely moves enough air for deep bass, and that is where an add-on subwoofer earns its place. This guide compares eight best subwoofers for soundbars, from wireless add-ons that pair only with matching bars to wired sub-out routes that accept any powered sub, to match the bass to your bar.

Quick verdict: start with the bar you already own

Start with the Samsung SWA-W510 if you own a compatible S-series bar, or the Sonos Sub Mini if you own a Beam or Ray. The Sony SA-SW5 suits a larger Sony system, while the ZVOX SB500 and the Denon DHT-S218 open a wired route for almost any powered sub. Check the compatibility list first.

The single most important fact in this guide is that wireless add-on subwoofers are not universal. Samsung, Sonos and Sony each sell subs that pair only with their own bars, so the right choice is decided by the soundbar already under your TV. The two wired picks at the end work the other way: their sub-out jack accepts a powered subwoofer from any brand.

Quick comparison table: eight add-on subwoofers at a glance

The table below lines up all eight picks by the question that decides the purchase: which bar each subwoofer pairs with, and how it connects. Read the compatibility column first, because a subwoofer that cannot pair with your bar is the wrong pick at any size or tier.

How we selected the subwoofers in this guide

Every pick in this guide is a real product with published specifications, and every wireless pick is matched to the bars its maker names as compatible. We compared driver size, wireless pairing, room size and the sub-out option on the two wired bars, and we left out models whose compatibility could not be checked.

This guide is based on published manufacturer and retailer specifications. It does not claim listening tests of its own, and it does not rank products by review scores, because scores use different methods and change with each update. Where a specification could not be verified, the guide says so in the product section and in the sources log, instead of filling the gap with a guess.

The best subwoofers for soundbars in this guide

Eight picks cover two routes to deeper bass, so the order below follows the decision most buyers face first: a wireless add-on that matches the bar you own, or a wired sub-out bar that accepts any powered sub. Each section states which bars the pick pairs with and what it gives up.

Samsung SWA-W710: the large wireless pick, with a verification warning

The Samsung SWA-W710 leads this guide as the large wireless Samsung pick, but its specifications could not be verified in the search results checked for this article. No driver size, power figure or compatibility list for a model numbered SWA-W710 appeared in those results, so this guide asserts none of them.

That gap matters because Samsung sells more than one add-on subwoofer, and the models are not interchangeable. The nearest verified Samsung add-on sub is the older SWA-W700, a 10-inch wireless model for Samsung Sound+ bars such as the HW-MS650 and HW-MS750, but that is a different model number and its list proves nothing about the SWA-W710. If you are considering the SWA-W710, confirm the exact model number and the compatible bar list on Samsung's own product page before you buy.

Buy it only if Samsung's own listing confirms that your bar is on its compatibility list. Skip it if the seller cannot show the model number and the compatible bars, because a wireless subwoofer that cannot pair with your bar stays silent.

Samsung SWA-W510: the compact wireless sub for S-series bars

The Samsung SWA-W510 is the wireless subwoofer Samsung sells for its S-series soundbars, and it suits a small room where the bar is already in place. It uses a 6.5-inch driver with a passive radiator in a compact unibody cabinet, and it pairs wirelessly with compatible S-series bars, so no audio cable runs across the floor.

Samsung names the compatible bars as the HW-S60D, HW-S61D, HW-S60B, HW-S61B and HW-S50B, and its product page states that the subwoofer is only compatible with selected Samsung soundbars. The cabinet measures about 9.4 inches on each side and weighs 14.1 pounds, so it tucks beside a media console or into a corner without dominating a small room. It has no input terminals for other brands, so it cannot be used with a non-Samsung bar.

Buy it if you own one of the named S-series bars and you want deeper bass without a cable. Skip it if your bar is not on the list, or if your room is large enough to need a bigger driver, because the W510 is built for compact spaces first.

Sonos Sub Mini: the compact wireless sub for Beam and Ray

The Sonos Sub Mini is the compact wireless subwoofer for a Sonos Beam or Ray, for a small to medium room with a Sonos bar already in place. It uses two 6-inch woofers facing inward for a force-canceling effect, with two Class-D amplifiers, and Sonos lists its low-frequency response as down to 25 Hz.

The Sub Mini connects over Wi-Fi and is set up through the Sonos app, with Trueplay room tuning. Sonos recommends it for the Beam, Ray, Era 100, One and One SL, and it also works with the Arc. It pairs only with amplified, non-portable Sonos products, so it will not work with a Move or Roam, and only one Sub Mini can be used in a system. The cylindrical cabinet is 12 inches high, 9.1 inches across, and weighs 14 pounds.

Buy it if you own a Beam or Ray in a small or medium room and you want fuller bass without a large box. Skip it if your room is large, if you want the option of two subwoofers, or if your bar is not a Sonos, because the Sub Mini only joins a Sonos system.

Sonos Sub (Gen 3): the full-size wireless sub for larger Sonos rooms

The Sonos Sub (Gen 3) is the full-size wireless subwoofer for a larger Sonos room, and it is the right pick when the Sub Mini would be too small. It uses two force-canceling speakers positioned face-to-face, two Class-D digital amplifiers and dual acoustic ports, and Sonos lists its frequency response as down to 25 Hz.

The Sub (Gen 3) works with Sonos products that run the S2 operating system, including the Arc, Beam (Gen 2) and Ray, and it is not compatible with the Move, Port or Connect. Unlike the Sub Mini, it supports a dual-subwoofer setup, so two units can be paired in one system for more even bass. Setup runs through the Sonos app, and the bar hands the low frequencies to the sub automatically.

Buy it if you own an Arc or a Beam in a medium to large room and you want the deepest bass Sonos offers for a soundbar. Skip it if your room is small, if your Sonos products run the older S1 software, or if your bar is not a Sonos, because the Sub only joins a Sonos S2 system.

Sony SA-SW5: the stronger wireless sub for Sony systems

The Sony SA-SW5 is the stronger of Sony's two wireless add-on subwoofers, and it is the right pick for a larger Sony system. It uses a 180mm driver with a passive radiator and 300W of power output, and it connects wirelessly to compatible Sony soundbars, so it needs only a power outlet.

Sony lists the SA-SW5 as compatible with the HT-A7000, HT-A5000, HT-A3000 and HT-A9 systems, and retailer listings add the Bravia Theatre Bar 9, Bar 8 and HT-S2000. Check the exact bar model before buying, because the subwoofer works only with the Sony bars Sony names, and it will not pair with a soundbar from another brand.

Buy it if you own a compatible Sony bar in a medium to large room and you want the deepest bass Sony offers as an add-on. Skip it if your room is small, if your bar is not on the compatibility list, or if a smaller sub would already fill the space, because the SA-SW5 is built for larger rooms.

Sony SA-SW3: the compact wireless sub for smaller Sony systems

The Sony SA-SW3 is the compact wireless subwoofer for a smaller Sony system, and it is the right pick when the SA-SW5 would be more than the room needs. It uses a 160mm driver in a bass reflex cabinet with 200W of power output, and it connects wirelessly to compatible Sony soundbars.

Sony's manual describes the SA-SW3 for use with the HT-A7000 and the HT-A9 home theater system, and retailer listings extend the list to the HT-A5000, HT-A3000, HT-S2000, Bravia Theatre Bar 9 and Bar 8. As with the SA-SW5, the subwoofer works only with the Sony models Sony names, so the bar model decides the purchase.

Buy it if you own a compatible Sony bar in a small to medium room and you want wireless bass without a large cabinet. Skip it if your room is large, if your bar is not on the compatibility list, or if you want the extra headroom of the SA-SW5 for action movies at high volume.

ZVOX SB500: the wired sub-out route for any powered sub

The ZVOX SB500 is not a subwoofer on its own, and that is why it belongs in this guide: it is a soundbar with a subwoofer output, so it opens a wired route to almost any powered subwoofer. The bar itself carries two built-in 4-inch subwoofers and a 140-watt Class-D amplifier, with six levels of AccuVoice dialogue enhancement and Output Leveling.

The rear panel carries a mono RCA subwoofer output for adding a powered subwoofer, and ZVOX notes that the output is a full-range mono signal, so the powered subwoofer needs its own low-pass filter. The bar's setup menu can stop the bar from playing deep bass once an external sub is connected, and ZVOX suggests setting the subwoofer's low-pass to 85 Hz. The bar is 43.9 inches wide, with optical and analog inputs and Bluetooth for music.

Buy it if dialogue clarity matters most and you want the freedom to add any powered subwoofer later. Skip it if you want HDMI eARC or Dolby Atmos, because the SB500 connects by optical or analog, or if you want a wireless sub, because this route uses a cable.

Denon DHT-S218: the wired sub-out route with Dolby Atmos

The Denon DHT-S218 is the second wired route in this guide, and it suits buyers who want Dolby Atmos in the bar and a subwoofer output for later. It is a 2.1 soundbar with six drivers, including two built-in down-firing 3-inch subwoofers, and Denon lists Dolby Atmos, HDMI eARC, optical, analog and Bluetooth LE Audio, plus a Dialog Enhancer.

The Atmos effect here is virtual, because the driver list shows no up-firing drivers, so the height effect comes from processing rather than physical height speakers. The subwoofer output is the feature that earns the DHT-S218 its place: it lets the owner add a powered subwoofer of any brand when the built-in woofers are not enough for movies.

Buy it if you want a single bar with Dolby Atmos now and a sub-out jack for a powered sub later. Skip it if you want physical up-firing Atmos drivers, because the sub-out route needs a wired powered sub.

What to check before you buy a subwoofer for a soundbar

A subwoofer is a system purchase, not a standalone speaker, so the checks below matter more than the driver size on the box. Confirm the bar model, find a power outlet near the subwoofer spot, and think about where the bass will sit in the room before you decide.

How to match the best subwoofers for soundbars to your room

Room size decides the subwoofer before price does, so start with the space rather than the specification sheet. A compact sub suits a bedroom or a small apartment living room, while a large open room needs a bigger driver and more headroom to fill the space without strain.

For a small room, the Samsung SWA-W510, the Sonos Sub Mini and the Sony SA-SW3 are the natural fits, because each is built for compact spaces. In a medium to large room, the Sonos Sub (Gen 3) and the Sony SA-SW5 give the extra output the space needs, while the wired sub-out route lets you size the powered sub to the room exactly.

Wireless add-on or wired sub-out: which route fits your bar

The wireless route is simpler, and the wired route is more flexible, so the bar you own decides which one is open to you. A wireless add-on pairs with one button press and needs no audio cable, but it works only with the bars its maker names, and it cannot move to another brand later.

A wired sub-out bar such as the ZVOX SB500 or the Denon DHT-S218 accepts a powered subwoofer from any brand through a single RCA cable, and the subwoofer can move to a new system later. The trade-off is a cable across the room and a subwoofer that needs its own low-pass filter, because the sub-out signal is not filtered by the bar.

Placement, power and setup checks before you buy

Every subwoofer in this guide needs a power outlet, even the wireless models, so check the outlet before you check the driver size. A corner placement gives more bass from the same subwoofer, while a spot beside the media console keeps the cable short and the room tidy.

Pairing a wireless sub usually takes one button press on the sub and the bar, and the Sonos models add app setup with Trueplay tuning. For a wired sub, set the low-pass filter and the volume on the sub itself, then let the bar handle dialogue and the sub handle the low end.

Frequently asked questions about subwoofers for soundbars

The questions below cover the doubts that come up most often before a purchase, from whether any subwoofer fits any bar to whether one sub is enough. Each answer follows the same rule as the rest of this guide: it states what the specifications support, and it names the case where the answer changes.

Can any subwoofer work with any soundbar?

No, and the wireless add-on models in this guide are the clearest proof. Samsung, Sonos and Sony wireless subs pair only with the bars their maker names, because they use a proprietary wireless link rather than a standard audio input, so a mismatched pair will not connect.

The exception is the wired route: a bar with a subwoofer output, such as the ZVOX SB500 or the Denon DHT-S218, accepts a powered subwoofer from any brand through an RCA cable. If your bar has no sub-out jack and no matching wireless sub, the only route is a new bar.

Do the best subwoofers for soundbars need a matching brand?

Yes, for the wireless add-on models, because each maker designs its sub to pair only with its own bars. A Samsung SWA-W510 will not pair with a Sonos Beam, a Sonos Sub Mini will not pair with a Sony bar, and a Sony SA-SW5 will not pair with a Samsung bar, no matter how the listing is worded.

The brand rule ends at the sub-out jack. A powered subwoofer connected by cable to the ZVOX SB500 or the Denon DHT-S218 can come from any brand, because the connection is a standard mono audio signal, not a proprietary wireless link.

Will adding a subwoofer make dialogue harder to hear?

No, if the balance is set well, because adding a subwoofer lets the bar stop trying to produce deep bass and focus on dialogue and midrange instead. The Sonos models hand the low frequencies to the sub automatically, and the ZVOX SB500 can be set to stop playing deep bass once an external sub is connected.

Dialogue gets harder to hear only when the subwoofer volume is set too high. Start with the subwoofer level low, use the dialogue or AccuVoice mode on the bar, and raise the bass only until action scenes feel full without drowning out speech.

Can you add two subwoofers to one soundbar?

It depends on the system, and most bars in this guide support only one subwoofer. Samsung documents one subwoofer per bar, and the Sonos Sub Mini cannot be doubled, so a second sub is not an option with those models no matter how large the room may be.

The Sonos Sub (Gen 3) is the exception in this guide: Sonos allows two Sub (Gen 3) units in one home theater system, which can even out the bass across a large room. For a wired sub-out bar, the single RCA jack feeds one powered subwoofer unless that sub offers a pass-through output.

Conclusion

Start with the bar you already own, then pick the subwoofer that pairs with it: the Samsung SWA-W510 for a compatible S-series bar, the Sonos Sub Mini or Sub (Gen 3) for a Sonos bar, or the Sony SA-SW3 or SA-SW5 for a Sony bar. If your bar has a sub-out jack, the ZVOX SB500 and Denon DHT-S218 let any powered subwoofer join, so check the model list.