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Bobcat4509
Contributor I
February 15, 2026

Connecting multiple speakers with wire

I am wanting to connect 3 Sonos speakers (2 x era 100 and 1 x era 300) to my iPhone to play music for a party. 
the wireless signal in my house isn’t great and when the speakers are spread out in different rooms they constantly drop out. 
I am hoping that I can hard wire them to an iPhone to successfully play music for a party. Any idea what wires / adapters I would need to buy and how to connect them all together!? 

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Pools-3015
Pools-3015
Prodigy I
February 16, 2026

Hardwiring with Ethernet helps in many situations, but I can’t say yes, it will fix your connection issues. We do not know what your network consists of, what your internal walls are made of or how big your home is. 

    Bobcat4509Author
    Contributor I
    February 16, 2026

    Hardwiring with Ethernet helps in many situations, but I can’t say yes, it will fix your connection issues. We do not know what your network consists of, what your internal walls are made of or how big your home is. 


    Only a small terraced house, but thick old stone walls. 
    WiFi signal constantly drops. 
    So if I were to connect all 3 speakers with Ethernet cables to the router, they wouldn’t be replying on WiFi at all would they? Or am I better just using the line in on each speaker with 3.5mm and adapters? 

    nik9669a
    Senior Virtuoso
    February 16, 2026

    Hardwiring with Ethernet helps in many situations, but I can’t say yes, it will fix your connection issues. We do not know what your network consists of, what your internal walls are made of or how big your home is. 


    Only a small terraced house, but thick old stone walls. 
    WiFi signal constantly drops. 
    So if I were to connect all 3 speakers with Ethernet cables to the router, they wouldn’t be replying on WiFi at all would they? Or am I better just using the line in on each speaker with 3.5mm and adapters? 

    The thick stone walls will certainly challenge wifi signals.
    Ethernet cables will eliminate the need for WiFi. 

    If you have a phone into each speaker you’ll have independent music in each room. Or you can just have one input (phone or other source via an adaptor’s line-in), but group all rooms together to have the same music playing in sync from all 3 speakers. 
     

    Note that Sonos do two adaptors. One is only for line-in; you need the Combo adaptor as I said in my earlier post. https://www.sonos.com/en-us/shop/sonos-combo-adapter-black
     

     

      Bobcat4509Author
      Contributor I
      February 16, 2026

      Hardwiring with Ethernet helps in many situations, but I can’t say yes, it will fix your connection issues. We do not know what your network consists of, what your internal walls are made of or how big your home is. 


      Only a small terraced house, but thick old stone walls. 
      WiFi signal constantly drops. 
      So if I were to connect all 3 speakers with Ethernet cables to the router, they wouldn’t be replying on WiFi at all would they? Or am I better just using the line in on each speaker with 3.5mm and adapters? 

      The thick stone walls will certainly challenge wifi signals.
      Ethernet cables will eliminate the need for WiFi. 

      If you have a phone into each speaker you’ll have independent music in each room. Or you can just have one input (phone or other source via an adaptor’s line-in), but group all rooms together to have the same music playing in sync from all 3 speakers. 
       

      Note that Sonos do two adaptors. One is only for line-in; you need the Combo adaptor as I said in my earlier post. https://www.sonos.com/en-us/shop/sonos-combo-adapter-black
       

       


      thank you for the info! Sorry to keep asking questions but I am totally novice when it comes to this stuff. 
      So am I right in thinking… connect all 3 speakers with Ethernet to my router. Connect my phone through 3.5mm to one speaker (with the double adapter) and then the music will be sent to the other 2 speakers through the Ethernet cable and it won’t drop out as it’s a more stable wired connection. 
       

       

       

        nik9669a
        Senior Virtuoso
        February 16, 2026

        Yup, that should do it (unless there are still any network issues that need tweaking). But you’ll still need the combo adaptor for the other two speakers too, as they don’t have an Ethernet connector without the adaptor. 

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