Onkyo TX-SR507 Instruction Manual page 17

Connecting the AV receiver—Continued
Speaker Connection Precautions
Read the following before connecting your speakers:
• North American and Taiwan models: 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.
• Other models: You can connect speakers with an
impedance of between 4 and 16 ohms. If the
impedance of any of the connected speakers is 4 ohms
or more, but less than 6 ohms, be sure to set the
minimum speaker impedance to "4 ohms" (see
page 40). 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. Connect
positive (+) terminals to only positive (+) terminals,
and negative (–) terminals to only 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.
• Don't connect more than one
cable to each speaker
terminal. Doing so may
damage the AV receiver.
• Don't connect a speaker to several terminals.
Connecting the Speaker Cables
Terminal posts
1
Strip 1/2"-5/8" (12-
15 mm) of insulation
from the ends of the
speaker cables, and
twist the bare wires
tightly, as shown.
2
Unscrew the terminal.
3
Fully insert the bare wire.
4
Screw the terminal tight.
Push terminals
1
Strip 3/8"-1/2"
(10-12 mm) of
insulation from the
ends of the speaker
cables, and twist the
bare wires tightly, as
shown.
2 While pressing the lever,
insert the wire into the
hole, and then release the
lever.
Make sure that the
terminals are gripping the
bare wires, not the insulation.
1/2"-5/8" (12-15mm)
3/8"-1/2" (10-12mm)
17