Question about Yamaha RX-V673 7.2 Channel AV Receiver BONUS PAK w/ Two HDMI Cables

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Impedance setting on Yamaha AV Receiver

Impedance of my Front & Center speakers are 6 Ohms and my pair of surround speakers have an impedance of 8 Ohms. Can I set the impedance of my AV Receiver at 6 Ohms or just retain the unit's default impedance at 8 Ohms?

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Hi. You can always use a Receiver with an output impedance that is lower than the speakers input impedance.Problems arise when you try to use a Receiver with a higher output impedance than the Speakers input impedance.

Receiver 6 ohms speakers 8 ohms......YES..
Receiver 8 ohms Speakers 6 ohms.......YES, WITH CAUTION

Posted on Jan 16, 2013

Testimonial: "Thank you so much for the very enlightening advice on proper matching of Receiver and Speakers impedance."

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SOURCE: speaker impedance and the Yamaha RXV 463

You risk to crash a set of speakers. In any case this will have a detrimental effect on the sound

Posted on Aug 04, 2008

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Posted on Feb 24, 2010

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I just purchased a yamaha RX-V767 receiver. I have a polk surround sound speaker system 5.1 that have an impededance of 8 ohms. The receiver has an impedece adjustment knob on it. would it be safe to...


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The impedance selector on the receiver supports minimum 4-ohm front and 6-ohm center and rear, so you'd be marginal on those last two, but barring excessive high volumes I'd think it would work. The powered sub is supported and its impedance spec is irrelevant.

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The speakers are 4 ohm speakers, a guy on another chat site sent me a link to the impedance curves http://www.audioholics.com/reviews/s...t-v2-fs/page-4

He agreed to that there was a mismatch as the unit has plenty of fresh air around it, plus all the speaker cables have been tested and installed correctly.

So, off to the store where I got it from tomorrow.


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