Tanglewood -
The Yamaha sound bars don't use left and right speakers. They bounce directed sound off the side walls to create the side and rear speaker effects. On board digital processing controls the timing of the signals to produce a convincing effect.
This does create some room constraints. You need a reasonably symmetric room with parallel walls on the left and right.
The only additional speaker is an optional sub.
The Yamaha sound bars don't use left and right speakers. They bounce directed sound off the side walls to create the side and rear speaker effects. On board digital processing controls the timing of the signals to produce a convincing effect.
This does create some room constraints. You need a reasonably symmetric room with parallel walls on the left and right.
The only additional speaker is an optional sub.