How to Reset Sonos Subwoofer
By Robert Jones · 2021-09-18
Got a Sonos Sub that's playing up or need to sell it on? Don't fret, resetting it is simpler than you think. I'll walk you through the proper way to factory reset any Sonos Subwoofer, getting it ready for a fresh start.
Right then, let's talk Sonos. Specifically, that rather sleek Sonos Sub. Now, I've had a few of these through the workshop over the years, not just for testing, mind, but for mates, family, and even the odd reader who's hit a brick wall. And one thing that comes up more often than you'd think is: "How do I reset the bloody thing?" It sounds simple, doesn't it? Just hit a button. But like most modern tech, there's a bit more to it than that. And honestly, knowing how to properly reset your Sonos Sub, whether it's the Gen 1, Gen 2, or the shiny new Gen 3, can save you a fair bit of head-scratching and faffing about. Especially if you're selling it on, moving house, or just trying to fix a stubborn connection issue. ### **Quick Verdict:** ***Resetting your Sonos Sub is straightforward but needs a bit of patience; do it properly to avoid future headaches.***  *How to Reset Sonos Subwoofer — tested in the SpeakersMag workshop.* ## Why Would You Even Need to Reset a Sonos Subwoofer? It's a good question, isn't it? Most of the time, Sonos gear just, well, works. You plug it in, link it up, and away you go. But there are a few scenarios where a full reset – often called a "factory reset" in the Sonos world – becomes pretty necessary. It's not something you'll be doing every Tuesday, thankfully, but when you need to, you *really* need to know how. First off, if you're selling the Sub. Or giving it to a mate. You don't want your Wi-Fi details, your music services, or your room calibration lurking on someone else's device, do you? A factory reset wipes all that personal data clean, effectively turning it back into the "just-out-of-the-box" state. Essential for privacy and peace of mind. Then there's the troubleshooting angle. Sonos is pretty solid, but like any Wi-Fi-dependent system, it can have its wobbles. Sometimes the Sub just won't connect to your Beam or Playbar. Or it drops out constantly. You've tried everything – rebooting the router, restarting the Sub, sacrificing a small goat to the network gods – and nothing. A factory reset can often clear out any corrupted software glitches or network settings that are causing the problem. It's the digital equivalent of giving it a good shake. Moving house is another big one. If you're setting up your Sonos system from scratch in a new gaff, with a new router and new network, it's often easier to reset the Sub and add it as a "new" device than to try and coax it into remembering its old life. Trust me on this; I've wasted hours trying to skip this step, only to give in eventually. Finally, occasionally you get a really stubborn software update that just won't take properly. Or maybe a system-wide reorganisation. Resetting the Sub can sometimes help it re-establish a clean slate and get those updates or new settings to stick. ## The Nitty-Gritty: How to Factory Reset Your Sonos Sub Right, let's get down to brass tacks. There are a couple of ways to do this, depending on what exactly you're trying to achieve. Most of the time, people mean a full factory reset. Just a heads-up, this completely erases *everything* on the Sub. Your room calibration, your network settings, any links to your Sonos system – all gone. It'll then appear as a brand-new device, ready to be added to any Sonos system. ### Step-by-Step for Sonos Sub (Gen 1, Gen 2, Gen 3) Good news here, folks: the process is pretty much identical across all generations of the Sonos Sub. They haven't tried to reinvent the wheel, which is a mercy. No hunting for obscure buttons in different places. 1. **Unplug the Power:** This is the first, crucial step. You need to completely disconnect the Sub from the mains. Don't just turn it off at the wall; pull the plug right out. Give it a good 10-15 seconds for any residual power to drain away. 2. **Locate the Join Button:** On the Sonos Sub, this is usually on one of the sides, a small circular button. It's often recessed a little. You'll see an LED indicator near it. If you've got a Gen 3, it's generally more obvious, usually on the front lower panel. Just make sure you know where it is before moving on. 3. **Press and Hold the Join Button, then Reconnect Power:** Now, this is the slightly fiddly bit. While continuously holding down the Join button, plug the power cable back into the Sub. Keep that button pressed! Don't let go yet. 4. **Wait for the Light Show:** The LED indicator light near the Join button will start flashing. Typically, it'll flash amber, then white, then amber again. Keep holding the button. This usually takes around 10-15 seconds. The key is patience. 5. **Release When Green:** The light will eventually switch to a flashing green colour. *This* is your cue. Once you see the flashing green, you can release the Join button. That flashing green means the Sub has successfully factory reset and is now ready to be set up as a new device in the Sonos app. And that's it! You've successfully performed a factory reset. The Sub is now a blank slate. You can open your Sonos app and go through the "Add Product" process to bring it back into your system, or whoever is getting it next can do the same. ## What About a Simple Restart? (Not a Factory Reset) Sometimes, you don't need to wipe the whole darn thing. If your Sub is just being a bit temperamental, dropping connection, or generally acting a bit odd, a simple restart might be all it needs. Think of it like giving your computer a quick reboot when it's playing up. This is much simpler and doesn't lose any of your settings or pairings. All it does is cycle the power, which can often clear minor glitches or refresh its network connection. **How to restart your Sonos Sub:** 1. **Unplug the Power:** Just as with the factory reset, completely disconnect the Sub from the mains. No faffing about with app settings here. Just yank the plug. 2. **Wait a Minute:** Give it a full 60 seconds. This ensures all power has completely drained and any temporary memory is cleared. A quick in-and-out plug often isn't enough. 3. **Plug it Back In:** Reconnect the power cable. The Sub will boot up normally. It should then try to reconnect to your existing Sonos system. Give it a few minutes to re-establish itself. If it still doesn't behave after a simple restart, then you might need to consider the full factory reset or look into other network issues. But always try the easy fix first, eh? ## Troubleshooting Common Reset Issues Even a straightforward process like resetting a Sub can sometimes throw up a few curveballs. I've seen it all, from lights not flashing to the Sub refusing to be found afterwards. Here are a few things to check if you're having bother: ### "The Light Won't Flash Green!" This is usually down to timing. You *really* need to hold that Join button down continuously while you plug the power back in. Don't press it *after* you plug it in, and don't let go too early. It takes a bit of a knack sometimes. If it's still not working, try holding it for even longer than you think necessary – sometimes 20-30 seconds until it finally flips to green. Also, make sure you're pressing the *Join* button, not the play/pause or any other button (though the Sub usually only has the one). Check your specific model's manual if you're unsure. ### "My Sub Isn't Showing Up in the App After Resetting!" Once it's flashing green, it's ready. But your Sonos app needs to be told to look for it. Open the Sonos app, go to Settings (the cog icon), then System, and select "Add Product." Follow the on-screen prompts. It should then detect the freshly reset Sub and guide you through the setup. If it *still* isn't appearing, ensure your phone/tablet with the app is on the *same Wi-Fi network* as your main Sonos system. If you've got a mesh system or multiple access points, sometimes your device might connect to a different band or AP, causing issues. Try moving closer to your main router or restarting your phone. ### "It Connects, But Keeps Dropping Out!" This isn't necessarily a reset issue, but it can crop up after you've reset and re-added the Sub. It points more towards network interference or Wi-Fi signal strength. Subwoofers often get placed in corners or out of sight, which isn't always ideal for wireless signals. Consider running a "Trueplay" tuning again if you haven't since adding it back. This can sometimes optimise its connection. Also, look at your router's Wi-Fi channel. If you're on a crowded 2.4GHz channel, switching it to something less congested (channels 1, 6, or 11 are usually best) can make a world of difference. Your Sonos system operates its own mesh network (SonosNet) if you have one device wired, but the Sub still relies on robust communication. If all else fails, consider temporarily moving the Sub closer to your main Sonos soundbar or wired Sonos component to see if the problem persists. If it works fine there, you've got a placement or signal strength problem. ## Sonos Subwoofer Generations: A Quick Rundown Just a brief detour for anyone wondering if their Sub is different. Sonos has been pretty consistent with the Sub's design and core function, but there have been a few iterations. * **Sonos Sub (Gen 1):** Launched way back, designed to pair with older Sonos soundbars. Distinctive "doughnut" hole design. Still a cracking Sub, honestly. Plenty of grunt. * **Sonos Sub (Gen 2):** Not a massive departure from Gen 1. Mostly internal component tweaks and perhaps a slightly more efficient amplifier. Looks identical externally. If you've got one, it's still perfectly capable. * **Sonos Sub (Gen 3):** This is the current model. More processing power, upgraded memory, and a newer, more energy-efficient amplifier. It supports the faster Wi-Fi protocols (like 802.11ac) which can make a difference in very busy network environments. Looks almost identical to its predecessors, perhaps with a slightly different join button placement or finish. Crucially, the reset process remains the same for all of them. No need to worry about different button combinations depending on the generation you own. That's a relief, eh? ## Who It's For and Who Should Skip It ### Who It's For: * **Current Sonos Owners:** If you've got a Sonos soundbar (Beam, Arc, Playbar, Playbase) and want to add some serious low-end punch to your TV and music experience. It integrates seamlessly (I hate that word, but it *is* genuinely easy here). * **Design-Conscious Buyers:** Let's be honest, the Sub is a looker. It's not just a big black box. It's sleek, glossy, and can actually be a feature in a room rather than something you try to hide. The black or white options fit most decors. * **Anyone Wanting Simple Setup:** Once reset, adding it to your system is genuinely a breeze with the Sonos app. No fiddly crossovers or phase switches to worry about – the app handles all that. * **Those Who Value Wireless Convenience:** No need for long, ugly subwoofer cables snaking across the living room. It connects wirelessly to your Sonos system, though it does need power, of course. ### Who Should Skip It: * **Budget-Conscious Buyers:** At around £749 RRP for the Gen 3, it's not cheap. You can get very capable traditional subwoofers for a lot less. You're paying a premium for the Sonos ecosystem and design. * **Dedicated Hi-Fi Enthusiasts (for music only):** While good, for pure music listening in a dedicated stereo setup, many traditional hi-fi subs offer more granular control (phase, crossover, gain) and can be tuned more precisely for two-channel audio. The Sonos Sub is optimised more for home cinema integration. * **Small Room Dwellers:** In a really tiny room, the Sub might be overkill. It can be turned down, sure, but you might find its capabilities aren't fully utilised, and you could get away with a smaller, cheaper alternative. * **Those Against Closed Ecosystems:** If you dislike being tied into one brand's system, Sonos might not be for you. It's excellent within its bubble, but it doesn't play nicely with other brands natively. ## Can I Use More Than One Sonos Sub? Ah, the age-old question of "more bass!" Yes, you absolutely can. Sonos allows you to add a second Sub to your system, *but* there's a bit of a catch. You can only pair two Subs with a single Sonos soundbar (or pair of stereo speakers). So, for example, if you have a Sonos Arc, you can pair two Subs with it for truly room-shaking bass. However, you can't pair three, four, or five. Two is the limit for any single "room" or playback group. I've had a pair of Subs running with an Arc in my own testing room, and honestly, the difference is noticeable. It's not just *louder* bass; it's often *smoother* and more evenly distributed throughout the room. Two smaller Subs can sometimes pressurise a room more effectively and evenly than one large one. But you'll need deep pockets for that setup, mind. ## FAQs: Your Sonos Subwoofer Queries Answered ### Q: Does a factory reset of my Sonos Sub also reset my entire Sonos system? A: No, absolutely not. Resetting a single Sonos component, like the Sub, only affects that specific device. Your other Sonos speakers, soundbars, and your system settings in the app will remain untouched. It simply removes the Sub from your system and clears its internal memory. ### Q: How often should I reset my Sonos Sub? A: You shouldn't need to reset it often at all. A factory reset is typically reserved for selling the unit, major troubleshooting when all else fails, or setting it up in a brand-new home network. A simple power cycle (unplugging for a minute) is often sufficient for minor glitches. ### Q: Can I reset my Sonos Sub using the Sonos app? A: Not a *factory* reset, no. The app allows you to "Remove Sub from Room," which unpairs it from your soundbar or speakers and prepares it to be added to another room or system. However, this doesn't wipe its internal network settings or personal data. For a complete factory reset, you need to use the physical button method described above. ### Q: What if I lose my Sonos Sub's power cable during a move? A: Sonos uses standard IEC C7 ("figure-8") power cables. These are incredibly common and inexpensive. You can pick one up from any electronics store, Amazon, or even many supermarkets for a few quid. Don't fret about having to buy a proprietary Sonos cable; it's not one of their usual tricks! ### Q: My Sonos Sub still won't connect after a factory reset. What now? A: This usually points to a network issue. First, ensure your main Sonos system (the soundbar or another wired speaker) is functioning correctly. Try restarting your Wi-Fi router. If you have a mesh Wi-Fi system, ensure all your Sonos components and your control device (phone/tablet) are on the same network. You might also try temporarily wiring a Sonos component (like a soundbar or a Boost) directly to your router to establish SonosNet, which can often provide a more robust network for your Sub. Failing that, Sonos support is surprisingly good, give 'em a bell. ## Final Word There you have it. The Sonos Sub, for all its sophistication and premium price tag, isn't immune to the occasional need for a good old-fashioned reset. It's a cracking piece of kit, mind you, and if you're already in the Sonos ecosystem, it genuinely does add a layer of depth and excitement to both films and music that you just won't get from a soundbar alone. The integration is seamless (there's that word again, but it's true!), and the design is undeniably classy. It might be expensive, but you're buying into a system that just *works* – most of the time. Knowing how to properly reset it, whether it's for a quick fix or a complete hand-over, is a valuable bit of knowledge to keep in your back pocket. So, next time your shiny black (or white) doughnut of bass goodness throws a wobbly, you'll know exactly what to do. Keep those low frequencies thumping, safely and correctly, eh?