Yamaha RX-V661 User Manual

Be sure to connect the left channel (L), right channel (R), “+” (red) and “–” (black) properly. If the connections are faulty, 
this unit cannot reproduce the input sources accurately.

A speaker cord is actually a pair of insulated cables running side by side. Cables are colored or shaped differently, perhaps with a stripe, 
groove or ridge. Connect the striped (grooved, etc.) cable to the “+” (red) terminals of this unit and your speaker. Connect the plain cable 
to the “–” (black) terminals.

Caution
• Before connecting the speakers, make sure that this unit is turned off (see page 25).
• Do not let the bare speaker wires touch each other or let them touch any metal part of this unit. This could damage 

this unit and/or the speakers. If the speaker wires are short-circuited, “CHECK SP WIRES” appears in the front 
panel display when you turn on this unit.

• Use the magnetically shielded speakers. If this type of speaker still creates interference with the monitor, place the 

speakers away from the monitor.

• If you are to use 6 ohm speakers, be sure to set “SP IMP.” to “6

Ω MIN” before using this unit (see page 25). 4 ohm 

speakers can be also used as the front speakers (see page 93).

When you use single surround back speaker, connect 
the speaker to the left SURROUND BACK terminal 
(SINGLE).

EXTRA SP terminals
Connect the alternative front speaker system (FRONT B), presence speakers or Zone 2 speakers. 
To select the function of the speakers connected to the EXTRA SP terminals, set the “EXTRA SP 
ASSIGN” parameter in “SOUND MENU” (see page 72).
y
You can also select the function of the speakers connected to the EXTRA SP terminals in “AUTO 
SETUP” (see page 29).