Sonos 老是掉线?先分清是「全部掉」还是「某几台掉」Sonos 經常掉線?先分清是「全部掉」還是「某幾台掉」Sonos Keeps Dropping Off Wi-Fi: Find the Cause Before You Reset

掉线係咩形状？先记低掉線係咩形狀？先記低What shape is the dropout? Write it down first

形状决定了从哪里查起。同一台，固定时间——多半是 DHCP 租约到期换了 IP。同一台，随机——信号或供电。全屋一起——路由器、频段引导或信道问题。只在播放某个服务时——那不是掉线，是服务端连接问题，看音乐服务那一篇。花一分钟记下「哪几台、多久一次、播放中还是空闲时」，比连试五个办法有用。形狀決定咗由邊度查起。同一台，固定時間——多數係 DHCP 租約到期換咗 IP。同一台，隨機——訊號或供電。全屋一齊——路由器、頻段引導或信道問題。只喺播放某個服務時——嗰個唔係掉線，係服務端連線問題，睇音樂服務嗰篇。花一分鐘記低「邊幾台、幾耐一次、播放中定閒置時」，好過連試五個辦法。The shape tells you where to start. Same speaker, on a schedule usually means a DHCP lease expired and the address moved. Same speaker, at random points at signal or power. The whole house at once points at the router, band steering or channel congestion. Only while one music service plays is not a network dropout at all — that belongs in the music service guide. Spending a minute noting which speakers, how often, and whether it happens while playing or idle beats trying five fixes blind.

① 给每台音箱固定 IP① 畀每台喇叭固定 IP① Give every speaker a reserved IP

这是掉线问题里命中率最高的一项。Sonos 产品之间靠 IP 互相寻址，如果路由器在租约到期时把地址换掉，控制器就会短暂失去那台音箱——症状正是「刚才还好好的」。在路由器的 DHCP 设置里为每个 Sonos 的 MAC 地址做地址保留（不同品牌叫「DHCP 保留」「静态租约」「绑定」），保留完重启一次音箱让它取得新地址。呢個係掉線問題入面命中率最高嗰項。Sonos 產品之間靠 IP 互相尋址，如果路由器喺租約到期時換咗地址，控制器就會短暫搵唔到嗰台喇叭——症狀正正就係「頭先仲好地地」。喺路由器嘅 DHCP 設定為每個 Sonos 嘅 MAC 位址做地址保留（唔同品牌叫「DHCP 保留」「靜態租約」「綁定」），保留完重啟一次喇叭令佢取得新地址。This is the single highest-hit-rate item on the list. Sonos products address each other by IP, so if the router hands out a different address when the lease renews, the controller briefly loses that speaker — which is exactly what "it was fine a minute ago" feels like. In your router's DHCP settings, create an address reservation for each Sonos MAC address (vendors call it DHCP reservation, static lease, or binding), then reboot the speaker so it picks up the reserved address.

如果你的路由器不支持保留，退而求其次是把 DHCP 租约时间拉长到 24 小时以上，能明显降低发生频率。如果你嘅路由器唔支援保留，退而求其次係把 DHCP 租約時間拉長到 24 小時以上，可以明顯降低發生頻率。If your router has no reservation feature, the next best thing is to raise the DHCP lease time to 24 hours or more, which noticeably reduces how often it happens.

② 关掉频段引导，或者拆开 SSID② 關掉頻段引導，或者拆開 SSID② Turn off band steering, or split the SSID

很多路由器把 2.4GHz 和 5GHz 合并成同一个 SSID，然后自动决定设备走哪个频段（叫「频段引导」「Smart Connect」「双频合一」）。Sonos 的部分型号只支持 2.4GHz，被引导到 5GHz 就会掉。更麻烦的是引导会在两个频段之间反复切换，表现出来就是随机掉线。好多路由器把 2.4GHz 同 5GHz 合併成同一個 SSID，然後自動決定裝置走邊個頻段（叫「頻段引導」「Smart Connect」「雙頻合一」）。Sonos 部分型號只支援 2.4GHz，畀引導去 5GHz 就會掉。更麻煩嘅係引導會喺兩個頻段之間反覆切換，表現出嚟就係隨機掉線。Many routers merge 2.4 GHz and 5 GHz into one SSID and decide for each device which band to use — sold as band steering, Smart Connect, or dual-band unification. Some Sonos models are 2.4 GHz only and will drop when steered to 5 GHz. Worse, steering can bounce a device between bands repeatedly, which surfaces as random dropouts.

最干净的做法是把两个频段拆成不同的 SSID，让 Sonos 固定连 2.4GHz。如果不想拆，至少先关掉频段引导观察两天。最乾淨嘅做法係把兩個頻段拆成唔同 SSID，令 Sonos 固定連 2.4GHz。如果唔想拆，至少先關掉頻段引導觀察兩日。The cleanest fix is to split the bands into separate SSIDs and keep Sonos on 2.4 GHz. If you would rather not split them, at least disable band steering and watch for two days.

③ Mesh 网络：看音箱在哪个节点上③ Mesh 網絡：睇喇叭喺邊個節點上③ On mesh: check which node the speaker is on

Mesh 系统会让设备在节点之间漫游，而漫游的那一瞬间对 Sonos 来说就是断线。如果掉线的那台正好在两个节点信号相当的位置，它可能整天都在两边跳。多数 mesh 后台能看到每个客户端挂在哪个节点上——先确认，再决定是移动音箱、移动节点，还是在支持的机型上把那台设备绑定到固定节点。Mesh 系統會令裝置喺節點之間漫遊，而漫遊嗰一瞬間對 Sonos 嚟講就係斷線。如果掉線嗰台啱好喺兩個節點訊號相當嘅位置，佢可能成日都喺兩邊跳。多數 mesh 後台睇得到每個客戶端掛喺邊個節點——先確認，再決定係移動喇叭、移動節點，定係喺支援嘅機型上把嗰台裝置綁定到固定節點。Mesh systems roam devices between nodes, and the instant of roaming looks like a disconnect to Sonos. If the affected speaker sits where two nodes have similar signal, it may hop back and forth all day. Most mesh dashboards show which node each client is attached to — confirm that first, then decide whether to move the speaker, move the node, or pin the device to one node if your system supports it.

有线回程的 mesh 比无线回程稳很多。如果那台音箱附近有网口，直接接一台有线 Sonos 通常一劳永逸。有線回程嘅 mesh 穩過無線回程好多。如果嗰台喇叭附近有網口，直接駁一台有線 Sonos 通常一勞永逸。Mesh with a wired backhaul is far more stable than wireless backhaul. If there is an Ethernet port near the problem speaker, wiring one Sonos product usually settles it for good.

④ 信道拥挤和物理干扰④ 信道擠塞同物理干擾④ Channel congestion and physical interference

2.4GHz 只有三个互不重叠的信道（1、6、11）。如果邻居的路由器和你挤在同一个信道，掉线会集中在晚间高峰。用手机上的 Wi-Fi 分析工具看一眼周边占用，然后把路由器固定到最空的那个信道，不要用「自动」——自动会在你正在听歌的时候换台。2.4GHz 只有三個互不重疊嘅信道（1、6、11）。如果鄰居嘅路由器同你擠喺同一個信道，掉線會集中喺夜晚高峰。用手機上嘅 Wi-Fi 分析工具睇一眼周邊佔用，然後把路由器固定到最空嗰個信道，唔好用「自動」——自動會喺你正在聽歌嗰陣換台。2.4 GHz has only three non-overlapping channels (1, 6 and 11). If a neighbour's router shares yours, dropouts cluster in the evening. Use a Wi-Fi analyser on your phone to see what is occupied, then pin your router to the quietest of the three — avoid "auto", because auto will change channel while you are listening.

物理干扰同样真实：微波炉、无线电话底座、婴儿监视器、大面积金属和厚墙都会削信号。如果一台音箱固定在某个位置才掉，把它挪开半米试试，比改任何设置都快。物理干擾一樣真實：微波爐、無線電話底座、嬰兒監視器、大面積金屬同厚牆都會削訊號。如果一台喇叭固定喺某個位置先掉，把佢移開半米試吓，快過改任何設定。Physical interference is just as real: microwaves, cordless phone bases, baby monitors, large metal surfaces and thick walls all attenuate the signal. If one speaker only drops in one spot, moving it half a metre tells you more, faster, than changing any setting.

⑤ 排除供电和线材⑤ 排除供電同線材⑤ Rule out power and cabling

如果只有一台反复掉，而且换位置也没用，把它和一台正常的音箱对调电源和插座。电源适配器老化、插排接触不良、和空调或洗衣机共用回路造成的瞬时压降，都会让音箱短暂重启——在 App 里看起来就是掉线。有线连接的音箱则先换一条网线、换一个交换机口再判断。如果只有一台反覆掉，而且換位置都冇用，把佢同一台正常嘅喇叭對調電源同插座。電源適配器老化、拖板接觸不良、同冷氣或洗衣機共用迴路造成嘅瞬時壓降，都會令喇叭短暫重啟——喺 App 睇落就係掉線。有線連接嘅喇叭就先換一條網線、換一個交換機口再判斷。If only one speaker keeps dropping and moving it changes nothing, swap its power supply and outlet with a speaker that behaves. An ageing adapter, a loose power strip, or a brief voltage sag from sharing a circuit with an air conditioner or washing machine will reboot a speaker briefly — which looks exactly like a dropout in the app. For wired products, swap the Ethernet cable and switch port before concluding anything.

有线一台，係咪全屋都受惠？有線一台，係咪全屋都受惠？Does wiring one speaker help the whole system?

把任何一台 Sonos 用网线接到路由器,系统会切换成音箱之间自建的无线回程(SonosNet),不再依赖你的家用 Wi-Fi 做音箱互连。这对老房子、厚墙、或者邻居信道拥挤的环境效果最明显——因为 SonosNet 走的信道可以独立设置,和你的 Wi-Fi 错开。代价是那台音箱要固定在有网口的位置。把任何一台 Sonos 用網線駁到路由器,系統會切換成喇叭之間自建嘅無線回程(SonosNet),唔再依賴你嘅家用 Wi-Fi 做喇叭互連。呢個對舊樓、厚牆、或者鄰居信道擠塞嘅環境效果最明顯——因為 SonosNet 行嘅信道可以獨立設定,同你嘅 Wi-Fi 錯開。代價係嗰台喇叭要固定喺有網口嘅位置。Connect any one Sonos product to the router by Ethernet and the system switches to a dedicated wireless backhaul between speakers (SonosNet) instead of leaning on your household Wi-Fi for speaker-to-speaker traffic. The gain is largest in older buildings, behind thick walls, or where neighbouring channels are congested — because SonosNet's channel can be set independently of your Wi-Fi. The cost is that one speaker has to live next to an Ethernet port.

如果你已经有一台有线,而掉线仍然只发生在某一台上,那基本可以排除全屋网络,回到上面第 ⑤ 项查那台自己的供电和位置。如果你已經有一台有線,而掉線仍然只發生喺某一台上,咁基本可以排除全屋網絡,返去上面第 ⑤ 項查嗰台自己嘅供電同位置。If you already have one wired product and the dropouts still only affect a single speaker, you can largely rule out the whole-house network and go back to item ⑤ for that speaker's own power and placement.

点样确认真係修好咗？點樣確認真係修好咗？How do I confirm it's actually fixed?

间歇性问题最容易骗人:改完设置试一次没掉,就以为好了。掉线的间隔本来就可能是几小时,试一次证明不了任何事。给自己一个明确的判据——例如「连续两晚的黄金时段播放两小时不掉」,再宣布修好。同时一次只改一样:如果你同时固定了 IP、拆了 SSID、又换了信道,下次复发时你不知道该回退哪一项。間歇性問題最容易呃人:改完設定試一次冇掉,就以為好咗。掉線嘅間隔本來就可能係幾個鐘,試一次證明唔到任何嘢。畀自己一個明確嘅判據——例如「連續兩晚嘅黃金時段播放兩個鐘唔掉」,先宣布修好。同時一次只改一樣:如果你同時固定咗 IP、拆咗 SSID、又換咗信道,下次復發嗰陣你唔知應該回退邊一項。Intermittent problems are the easiest to fool yourself about: you change a setting, it does not drop once, and you declare victory. Dropouts can be hours apart, so a single trial proves nothing. Set an explicit bar before you call it fixed — for example, two consecutive evenings of two hours' playback with no drop. And change one thing at a time: if you reserved the IP, split the SSID and moved the channel all at once, you will not know what to roll back when it returns.

如果掉线是最近才开始的,先想想最近改过什么:换了路由器、运营商换了光猫、装了 mesh、固件自动更新过、或者多了一台大功率电器。多数「突然开始掉线」都能对上一件最近发生的事。如果掉線係最近先開始,先諗吓最近改過咩:換咗路由器、營運商換咗光貓、裝咗 mesh、韌體自動更新過、或者多咗一台大功率電器。多數「突然開始掉線」都對得返一件最近發生嘅事。If the dropouts started recently, ask what changed recently: a new router, an ISP-swapped modem, a new mesh system, an automatic firmware update, or a new high-draw appliance. Most "it suddenly started" cases map onto one recent event.

几时先真係轮到恢复出厂设置？幾時先真係輪到恢復原廠設定？When is a factory reset actually the answer?

很少。恢复出厂设置解决的是音箱自身配置损坏，而上面五项都是网络环境问题——重置之后音箱回到同一个网络，问题会原样回来。只有在你已经确认地址固定、频段固定、信道固定、换过电源和位置都无效，而且这台音箱在别人的网络上也不正常时，重置才有意义。重置前记下你的分组和收藏，它们不会被保留。好少。恢復原廠設定解決嘅係喇叭自身配置損壞，而上面五項都係網絡環境問題——重置之後喇叭返到同一個網絡，問題會原樣返嚟。只有喺你已經確認地址固定、頻段固定、信道固定、換過電源同位置都無效，而且呢台喇叭喺人哋嘅網絡上都唔正常時，重置先有意義。重置前記低你嘅分組同收藏，佢哋唔會保留。Rarely. A factory reset addresses corrupted configuration on the speaker itself, while all five items above are environmental. Reset it and the speaker rejoins the same network, so the problem returns unchanged. A reset only makes sense once you have fixed the address, the band and the channel, swapped power and position with no effect, and confirmed the speaker also misbehaves on someone else's network. Write down your groups and favourites first — they are not preserved.

官方参考官方參考Official references

• 减少无线干扰減少無線干擾Reduce wireless interference
• 产品从 Sonos App 消失產品從 Sonos App 消失Products missing from the Sonos app
• 连接到新路由器或新 Wi-Fi連接到新路由器或新 Wi-FiConnect Sonos to a new router or Wi-Fi network
• 重启 Sonos 产品重啟 Sonos 產品Reboot Sonos products
• 恢复出厂设置恢復原廠設定Reset your Sonos product