A:AnswerI assume you are referring to the rear surround speakers as the woofer is wireless and the two in soundbar are integrated into it. The answer is Yes, but if greater than the 3ohm rating, sound volume will be decreased due to the higher resistance. You should not use higher than 4ohm speakers if you add your own.
A:AnswerYes, you can mount the sound system on the wall directly under tv and use optical or Bluetooth. Or you can place the system where you desire and connect it via Bluetooth
A:AnswerI have spent hours with Samsung and they have admitted that the 6.1 is NOT A TRUE 6.1, but virtual 6.1 simulated by the software installed. It is really a 2.1 !!!!! The rear speaker set WILL NOT WORK WITH THE FAKE 6.1 but will work with the 2.1. BUYER BEWARE - 6.1 IS FRAUDULANT INFO. AND SAMSUNG HAS ADMITTED THAT TO ME.