Help! I have an old JVC rack system circa 1990 and the wired speakers are GIANT and don’t fit in my new space. I’d like to get some wireless speakers (but would settle for slim wired speakers if need be). The problem is that the old speakers connect via speaker wires with exposed wires at either end that “snap” into these ports in the back. There are no “available” RCA ports on the receiver because they are being used by the other components. And the headphone port in the front is waaaay bigger than the external speaker jack for the speakers that I plug into my laptop. Plus, if I plugged something into the front of the receiver the glass door of the rack system wouldn’t close. So I need help at like a kindergarten level on whether there is a way of using those old speaker wire ports in the back to connect to new speakers or a Bluetooth receiver for wireless speakers. I hope this makes sense. Thanks!!!