Kenwood KR-V5560 Instruction Manual page 21

Before playing a video (or LD} software program carrying
the DX) [Seur sumo] mark, be sure to complete the "DOLBY
PRO LOGIC surround arrangement".
SURROUND] (
Each press of the key switches the modes as follows:
@) PRO LOGIC
2) 3 STEREO
(3) OFF (BYPASS)
itt ee er ee cr eee ce ce See ee cere ee eee Cece eee Tere eee eee eee ee Te TT ee rer rere re Te ere Te eee Te er rer
Goes off.