Onkyo TX-SR309 Instruction Manual page 11

Speaker Configuration
The following table indicates the channels you should use
depending on the number of speakers that you have.
No matter how many speakers you use, a powered
subwoofer is recommended for a really powerful and solid
bass.
To get the best from your surround sound system, you
need to set the speaker settings manually
Number of channels
Front speakers
Center speaker
Surround speakers
Attaching the Speaker Cable Labels
The speaker terminals are color-coded for identification
purpose.
Speaker
Front left
Front right
Center
Surround left
Surround right
The supplied speaker cable labels are also color-coded and
you should attach them to the positive (+) side of each
speaker cable in accordance with the table above. Then all
you need to do is to match the color of each label to the
corresponding speaker terminal.
Speaker Connection Precautions
Read the following before connecting your speakers:
• You can connect speakers with an impedance of between
6 and 16 ohms. If you use speakers with a lower
impedance, and use the amplifier at high volume levels
for a long period of time, the built-in amp protection
circuit may be activated.
• Disconnect the power cord from the wall outlet before
making any connections.
• Read the instructions supplied with your speakers.
• 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 sound unnatural.
• Unnecessarily long, or very thin speaker cables may
affect the sound quality and should be avoided.
• Be careful not to short the positive and negative wires.
Doing so may damage the AV receiver.
• Make sure the metal core of the wire does not have
contact with the AV receiver's rear panel. Doing so may
damage the AV receiver.
page 31).
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2 3 4 5
✔ ✔ ✔ ✔
✔ ✔
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Color
White
Red
Green
Blue
Gray
• Don't connect more than one cable to each speaker
terminal. Doing so may damage the AV receiver.
• Don't connect one speaker to several terminals.
Using a Powered Subwoofer
To find the best position for your subwoofer, while
playing a movie or some music with good bass,
experiment by placing your subwoofer at various
positions within the room, and choose the one that
provides the most satisfying results.
Tip
• If your subwoofer is unpowered and you're using an external
amplifier, connect the subwoofer pre out jack to an input on the
amplifier.
LINE INPUT
LINE INPUT
Powered subwoofer
1/3 of wall
position
Corner
position
En
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