Onkyo TX-8390 Instruction Manual page 19

Contents Connections Playback Setup
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Connecting speakers
Speaker Connections and "Speaker Setup" Settings
Connections
„ (Note) Speaker Impedance
Connect speakers with an impedance of 4 Ω to 16 Ω. When using the 2.1 Channel System (A+B) ( p22) for simultaneous output from SPEAKER A and B, connect
speakers with 8 Ω to 16 Ω impedance.
„ Connect the Speaker Cables
1/2˝
(12 mm)
Make correct connection between the unit's jacks and speaker's jacks (+ side to + side, and - side to - side) for each channel. If the connection is wrong, a bass sound
will not be reproduced properly due to reverse phase. Twist the wires exposed from the tip of the speaker cable so that the wires do not stick out of the speaker terminal
when connecting. If the exposed wires touch the rear panel, or the + side and – side wires touch each other, a malfunction may occur.
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Front Panel≫ Rear Panel≫ Remote≫