I have 2 speakers (JBL Flip 3), and 1 of them is connected to my TV (which does not have Bluetooth), via a digital to analog converter and cables. Can I pair a second speaker without hooking it up to my tv, but instead pairing it with my other speaker via Bluetooth?
The Flip 3 speakers support the JBL Connect app so you should be able to pair them both to the same transmitter and may be able to set one as left and the other as right in the app.
I don't know if one speaker that is wired will work with another in bluetooth though. BT speakers don't usually have transmitters built in but since the app is free give it a try.