Using regular speakers will require an outboard transmitter / receiver system, as well as an amplifier at the back or the room.
Most consumer wireless systems utilize the crowded 2.4 GHz band, which is prone to interference from just about every wireless device in the house and maybe your neighbor’s too, if he’s close enough. As such, most systems can’t garner more than about a 50-65% Amazon user approval rating (combined 4-5 star reviews).
However, the Avantree Oasis system manages to garner unusually high approval ratings, so you might give it a try.
If it doesn’t work, you’ll have to move up to a pro audio system. They’re much more reliable, but the price of admission
starts at more than double what the Avantree system goes for (not including the amplifier).
More bad news about wireless:
https://www.avnirvana.com/threads/wireless-speakers-for-surround-sound-don’t-ask-it’s-a-mess.2057/
Regards,
Wayne A. Pflughaupt