Sony BDP-S1700 Blu-ray Disc Player - Manual (Page 20)

20 GB
You can enjoy vertical sound effects by connecting additional two front Dolby Atmos
enabled speakers.
5.1.2-channel speaker system using front Dolby Atmos enabled
speakers

30˚

100˚ – 120˚
Speaker cable (not supplied)
Monaural audio cable (not supplied)