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What ohm to set amp

I have the Sonus Faber towers with matching center. Running a Marantz AV7005 with a Mcintosh Mc205 for power. I've read in a couple of reviews, where the towers were running at 4.1 to 4.7 ohms and the center was running at 6.2 ohms. They are 8 ohm speakers, can I run it at 4 ohms? My friend said I can run them at 4, but couldn't tell me if there would be issues down the road.
kalbi23

Showing 2 responses by kalbi23

kalbi23 OP
58 posts
 
Thanks guys, I called a SF rep and he said I should run them at 8 ohm since they are 8 ohm speakers. I'll contact Chuck at Mac and see what he saids.
kalbi23 OP
58 posts
 
Thank you everyone for taking the time to research and post. The SF speakers I have are the Liuto towers and the matching center the smart. I talked to a rep at Mac, and he told me doesn't matter if I have it set at 4 or 8 ohm, as the amp would switch on its own when needed. But he also asked if the amp was running hot at the 8 ohm setting, since this is my first Mac, I didn't know how hot it is suppose to run. I'm wondering why would it matter if it switches on its own.
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