Sonos Play 5 Stereo Pair Line-In Problem

If they’re set up as a stereo pair, I’m not sure how you could “move the Line in” to the other speaker. Is it possible that they’re not actually set up as a stereo pair, but two separate “rooms” that you’ve grouped together?

If they’re set up as a stereo pair, they’d show up as a single “room” in the Sonos controller, and be designated as (R+L) in the room. If you have two separate rooms, like “Living Room” and Living Room 1” then they’re set up not as stereo, but are mono speakers that you’ve grouped together, most likely. 

When you’re setting up the Line in, you should have just the one room that you’re sending the signal to...the one room that indicates the (R+L) in the room name. 

@Airgetlam - thank you for the response. Yes, definitely a stereo pair. 
 

That said, the turntable as an “input” only ever shows as (L) if connected to left speaker or (R) if connected to right speaker. I’ve attached screenshots. I have tried everything - including full factory reset.  By “move the line-in”, I meant physically move the cable from the Turntable to the Line-In port of the Left speaker or Right speaker.
 

My thoughts are to perhaps first separate the stereo pair of Fives and then try each speakers line-in port, just to ensure that it is working correctly (maybe power-cycle the speaker, if necessary, and double-check the cable is seated correctly, or maybe even try a different cable).

If no joy with those things, consider a factory reset of the one ’problem’ speaker only - do not factory reset all your products.

Once you have each line-in working correctly (hopefully), then go onto stereo pair them and see if the both devices then work.

Also, double check the wiring. A missing channel is often due to a miniplug not pushed in all the way, or an RCA connector in the wrong output/input.

Thanks, all! I will check these things and report back. Really appreciate all the help!

In addition, it’s worth double checking that the cable in use, plugged into the back of the Five, is a stereo cable, and not a mono one. I think I’ve finally gotten rid of all my legacy mono cables, but it’s something that has bitten me before. 

Alright… Double checked everything.  Confirmed cable is stereo cable and tested channel functionality.

Separated “Stereo Pair”.  Found that speaker physically to the left worked with Line-In, but speaker physically to the right did not.  Rebooted Right speaker.  No change.  Factory reset Right Speaker - this resolved the Line-In Issue.

Confirmed able to play Line-In on either Left or Right speaker (still not in “Stereo Pair”).  Setup Stereo Pair - music only plays from the speaker where cable is connected.  Removed Stereo Pair and put both individual speakers into a grouped room - music only plays from the speaker where cable is connected.

Sigh...

What is your Autoplay room set to? Please tell us more about your network (mesh, access points, wired Sonos component?).

What happens if you use line in from a phone rather than the turntable?

Some things to perhaps try.. 

Maybe try the speakers on a different 2.4Ghz WiFi channel on your router (using channel 1, 6 or 11) and set the channel-width to 20MHz only… if you are using SonosNet (with one Sonos device wired to the main router) then set that so it’s channel is at least 5 channels away from your chosen router channel. Also ensure any wired device is not a Sub or HT surround and is positioned at least one metre away from your router. 

If using a grouped ‘room’ setup (rather than paired) see what happens when you increase the buffer using the Audio Delay option in the room settings..

Also perhaps see what happens when you change the line-in audio compression to ‘compressed’ in ‘Settings/System/Audio Compression’.