Connecting Playbar without a Bridge

Connect the Playbar (or any other non-surround speaker) to your router. Cost: the cable at the length required. 

Just connect the Playbar to your router’s Wi-Fi. Zero cost.

I have a new router and the signal drops out when the bridge is connected. The only to use the internet is not to have the bridge connected. I need some other Sonos product to connect by Bluetooth so that I can run the playbar. The playbar is still operational with my tv.

No, you don’t need a device like the BRIDGE. You can hang your PLAYBAR directly off an appropriate WiFi signal, as suggested by ​@Mr. T .

Read the wireless and wired systems FAQ. And for good measure, here is the Sonos Network Requirements FAQ.

Ok I’ll have a go. The plybr is an old model though if that makes a difference.

Sonos made it easy to connect your speakers to your WIFI without the need for a bridge years ago. The Bridge has been retired because of this and there is no need for it any longer. You can remove it from your network.

Not only was the BRIDGE retired, but also its replacement, the BOOST has been retired, in favor of a wireless connection to much more capable routers.