Yamaha ATS-1070 Owner's Manual page 24

c
Using an external subwoofer
The unit has dual built-in subwoofers; however you can connect an
external subwoofer when you want to enhance low frequency sound.
Connect a subwoofer quipped with built-in amplifier to the
SUBWOOFER OUT jack of the unit.
Sound is output from both the built-in subwoofers and external
subwoofer.
AC IN
RCA mono cable
(optional)
Mono input
24
En
SUBWOOFER ANALOG TV
OUT
UPDATE IN OUT(ARC)
ONLY
SUBWOOFER
OUT
Subwoofer quipped
with built-in amplifier
d
Connecting the power cable
After all connections are complete, connect the supplied power cable
to the AC IN jack on the unit and plug the power cable into an AC wall
outlet.
AC IN
AC IN
SUBWOOFER ANALOG TV
UPDATE OUT
ONLY IN OUT(ARC)
To an AC wall outlet