Onkyo TX-NR509 Owner Manual - Page 12

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 28) or manually (➔ page 41). Number of channels Front speakers Center speaker Surround speakers Surround back speaker*1 Surround back speakers 234567 ✔ ✔✔✔ ✔✔✔✔ ✔ ✔ *1 If you're using only one surround back speaker, connect it to the SURROUND BACK L PRE OUT jack. Attaching the Speaker Cable Labels The speaker terminals (and preout jacks) are color-coded for identification purpose. Speaker Front left Front right Center Surround left Surround right Surround back left Surround back right Color White Red Green Blue Gray Brown Tan 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. • 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. Note • With the Home Theater System, speaker cable labels are not supplied. En 12