Marantz NR1603 Owner's Manual page 84

Connecting front A/B speakers
You can connect a second set of speakers to this unit and use them for playback.
In this case, set "Assign Mode" to "Front B" in steps 3 to 5 for "Set up "Amp Assign"" (vpage 85).
Cables used for connections
Audio cable (sold separately)
Speaker
cable
Subwoofer
cable
For multichannel playback, connect center, surround, surround back, and front speakers and a subwoofer.
Front speakers can be used separately, depending on the speaker's specifications or playback source such
as front speakers (A) for multichannel playback and front speakers (B) for 2-channel playback
"Front Speaker").
NOTE
• For speaker cable connections, see page 76.
• For speaker impedance , see page 76.
DVD
(vpage 120
FL(B)
81
SW
FL(A) FR(A) FR(B)
Speaker connection