Onkyo HT-R990 Speaker Configuration, Speaker Connection Precautions, Number of channels

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 automatically

(➔ page 30) or manually (➔ page 43).

Number of channels	2	3	4	5	6	7	7
Front speakers	✔	✔	✔	✔	✔	✔	✔
Center speaker		✔		✔	✔	✔	✔
Surround speakers			✔	✔	✔	✔	✔
Surround back speaker*1*2					✔
Surround back speakers*2						✔
Front high speakers*2							✔

*1 If you’re using only one surround back speaker, connect it to

the SURROUND BACK or FRONT HIGH L terminals.

*2 Front high and surround back speakers cannot be used at the same time.

Connecting the Speaker Cables

The speaker terminals are color-coded for identification purpose.

Speaker	Color
Front left, Zone 2 left	White
Front right, Zone 2 right	Red
Center	Green
Surround left	Blue
Surround right	Gray
Surround back left, Front high left	Brown
Surround back right, Front high right	Tan

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.

En

13