I am having issues with my Yamaha shutting down trying to play 4 ohm speakers
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I've read that Yamaha is good w/ 4 ohm speakers. I have a little older RX-V659 (100w x 7) that does fine with 4 ohm speakers. There is a setting in the amp with an 8 ohm or 6 ohm setting (for 4 ohm speakers). But, I read a comprehensive review that says to use the 8 ohm setting for 4 ohm speakers too, because the 6 ohm setting limits the output to protect the amp from clipping, but the performance is better with the 8 ohm mode. Can you download the manual an see if this is true on your model?