Onkyo TX-SR508 Owner Manual - Page 11
Connections, Connecting the AV Receiver, Connecting Your Speakers - too much bass
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Connecting the AV Receiver Connecting Your Speakers Speaker Configuration The following table indicates the channels you should use depending on the number of speakers that you have. For 7.1-channel surround-sound playback, you need seven speakers and a powered subwoofer. Number of channels Front speakers Center speaker Surround speakers Surround back speaker*1*2 Surround back speakers*2 Front high speakers*2 234567789 ✔ ✔ ✔ ✔ ✔✔✔ *1 If you're using only one surround back speaker, connect it to the SURR BACK OR FRONT HIGH L terminals. *2 Front high and surround back speakers cannot be used at the same time. If you use 4 or 5 speakers, connect each of the two surround speakers to the SURR L/R terminals. Do not connect them to the SURR BACK OR FRONT HIGH L/R or FRONT HIGH OR ZONE 2 L/R terminals. 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. You can do this automatically (➔ 23) or manually (➔ 36). Attaching the Speaker Cable Labels The AV receiver's positive (+) speaker terminals are all red. (The negative (-) speaker terminals are all black.) Speaker Front left, Zone 2 left, Front high left Front right, Zone 2 right, Front high 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: • (North American 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 builtin amp protection circuit may be activated. • (European and Asian 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 "4ohms" (➔ 40). If you use speakers with a lower impedance, and use the amplifier at high volume levels for a long period of time, the builtin 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 11