Onkyo A-9050 Owner's Manual page 13

Note
• Make sure that the wires do not touch metal parts on the back
panel or elsewhere.
• Y plugs cannot be connected.
• Two sets of speakers (Speakers A and Speakers B) can be
connected to the integrated amplifier. You can select which
speakers to output audio to when listening to music.
You can also output audio from both sets of speakers.
• If you use Speakers A or Speakers B, make sure to use speakers
with an impedance of 4 to 16 ohms. If you use Speakers A and
Speakers B, make sure to use speakers with an impedance of
8 to 16 ohms. Connecting speakers with an impedance less than
8 ohms may cause the protection circuit to activate.
• When using only one speaker, or when playing back monaural
audio, don't connect a single speaker to both the left and right
speaker terminals.
• Pay close attention to speaker wiring polarity. In other words,
connect positive (+) terminals only to positive (+) terminals, and
negative (–) terminals only to negative (–) terminals. If you get
them the wrong way around, the sound will be out of phase and
will feel unnatural.
• Be careful not to short the positive and negative wires. Doing so
may damage the integrated amplifier.
• Make sure the metal core of the wire does not have contact with
the integrated amplifier's rear panel. Doing so may damage the
integrated amplifier.
• Don't connect more than one speaker wire to a single speaker
terminal. Doing so could damage the integrated amplifier or
cause it to malfunction.
Bi-wiring Connection
Bi-wiring provides improved bass and treble performance.
Using terminals of both SPEAKERS A and
SPEAKERS B, it separates high frequency from low
frequency signals.
Important:
• Bi-wiring can be used only with speakers that support bi-
wiring and that have an impedance of 8-16 ohms.
• When making the bi-wiring connections, be sure to remove
the jumper bars that link the speakers' tweeter (high) and
woofer (low) terminals.
• When making the bi-wiring connections, set SPEAKERS to
A+B (➔ page 22).
Integrated Amplifier
Tweeter (high)
Woofer (low)
Right
speaker
Tip
• As shown on the illustration, the wiring terminals of
SPEAKERS A are connected to the woofer and
SPEAKERS B are connected to the tweeter. However, wiring
them the other way around is also possible.
Left
speaker
En
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