Getting a new bluetooth turntable to work with existing, older Sonor speakers

To bring the turntable into Sonos via BT you’ll need to purchase a Roam 2, Move 2, Era100 or Era 300 and then group with other Sonos speakers. Another option sans BT is run a RCA to 3.5mm cable from your turntable to your Play 5 and group in other Sonos speakers if you want.

Whatever turntable you have must have a built-in pre-amp. Otherwise you’ll have to purchase a pre-amp to sit between your turntable and your Play 5.

If memory serves, the Sonos One using S2 will accept a Bluetooth signal. You could send the turntable’s input to that, and then group any speakers in the Sonos controller to get it playing anywhere.

I’d consider retiring that BOOST, to, and just having your system connect to your WiFi directly.

I note that I’m incorrect, the One does not accept Bluetooth. Follow ​@AjTrek1 s advice.

I’d also note that in order to have Bluetooth, a turntable must use a internal pre-amp, to get the signal to Bluetooth levels ;)

Great Point. If the turntable doesn’t have a built-in pre-amp you can still use BT. However you’ll need a BT transmitter like the one in the link.

The connection would be Turntable > Pre-amp > BT Transmitter > Sonos BT speaker.
 

https://www.amazon.com/Bluetooth-Transmitter-Projector-Wireless-Headphones/dp/B09QX8ZQQJ/ref=sxin_30_pa_sp_phone_search_thematic_sspa?content-id=amzn1.sym.9930ce32-842f-4664-b13c-cc6728bb8ec8%3Aamzn1.sym.9930ce32-842f-4664-b13c-cc6728bb8ec8&crid=16OEOC0R5IDUB&cv_ct_cx=bluetooth+transmitter+for+home+audio&keywords=bluetooth+transmitter+for+home+audio&pd_rd_i=B09QX8ZQQJ&pd_rd_r=7745e5fc-3006-42c3-ab15-1316f3ab29a7&pd_rd_w=WrAhZ&pd_rd_wg=x5GiY&pf_rd_p=9930ce32-842f-4664-b13c-cc6728bb8ec8&pf_rd_r=0CR0P7ZRSGHAWQ99FADB&qid=1760027802&sprefix=blue+tooth+transmitter+for+home%2Caps%2C109&sr=1-2-794806aa-f21d-47b5-a3ea-b60ce78b088a-spons&sp_csd=d2lkZ2V0TmFtZT1zcF9waG9uZV9zZWFyY2hfdGhlbWF0aWM&psc=1

You might be able to get a Bluetooth receiver with a line-in jack that you can plug into the Play:5 line-in input, rather than buy another speaker? 

Not a huge fan of Bluetooth, honestly, due to the compression it tends to do for bandwidth purposes. If it were me, I’d go with a Sonos device that has a line in. Slightly more expensive likely, but better sound.