“If I want to use 5-7 channels, will I need an amplifier. I am looking at the Polk Atrium 6 or 8 and a subwoofer. For an outdoor system.”

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• Hi Customer, You can connect 7 speakers and 2 subwoofer to this AV receiver. We recommend connecting speakers with a nominal impedance of 6 ohms to 16 ohms. We also recommend using speaker wires that are anywhere between 12 to 16 gauge. These are most commonly used for connecting speakers to an amplifier or an Audio/Video (A/V) receiver Happy to help, David

  Answered by SonyListens 4 years ago

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• I have a 7.1 setup and it is just fine without any additional hardware.

  Answered by Justaguest 4 years ago

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