A:AnswerNot necessarily... you have to enable bluetooth connect mode if you want to connect via different device. This enables your receiver to be discoverable and then you can connect. Hope this helps.
A:AnswerNo brackets for the speakers come with this, you can mount these speakers to the wall with the keyhole openings on the back of the speakers themselves. As far 24 gauge speaker wire, it comes with some that looks to be 18-22 gauge so I guess you could, but it would probably be better transmission with 18 gauge or lower wire