Yamaha SW-2 Owner's Manual page 7

If your amplifier has two sets of speaker terminals
Right speaker
Connecting to this unit's OUTPUT/INPUT terminals
For connections, cut the speaker wires as short as possible. If
the connections are faulty, no sound will be heard from the
speakers. Make sure that the polarity of the speaker wires is
correct, that is, + and – markings are observed. If these wires
are reversed, the sound will be unnatural and will lack bass.
Do not let the bare speaker wires touch each other and do
not let them touch the metal parts of this unit as this could
damage this unit, your amplifier and/or speakers.
How to Connect:
Red: positive (+)
Black: negative (–)
2
1
3
A B
This unit
INPUT2
INPUT2 INPUT1
AUTO
POWER FROM AMPLIFIER
STANDBY-RED ON OFF
ON-GREEN
POWER HIGH CUT VOLUME
50 Hz 150 Hz 0 10
OUTPUT
TO SPEAKERS
To AC outlet
Unscrew the knob.
Insert the bare wire.
[Remove approx. 5mm
(1/4") insulation from
the speaker wires.]
Tighten the knob and
secure the wire.
Amplifier
(Both "A" and "B" outputs
must be ON.)
INPUT1
FROM AMPLIFIER
OUTPUT
TO SPEAKERS
* Banana Plug connections are also possible. Simply insert
the Banana Plug connector into the corresponding terminal.
Left speaker
7