Originally Posted by Rocks991s
Need a bit of advice.
I’m planning a 3.1 system for TV/movie viewing and for 2.1 for music listening.
A 5.1 or higher surround system is not a concern at this time, but down the road, you never know.
My question is, do higher-end Yamaha AVR’s have any problems running 4 ohm speakers to reasonably loud levels?
The system would consist of a pair of Martin Logan Motion 15’s for LR and either a Motion 50XT or another 15 for the center.
All the speakers are rated at 4 ohms but have sensitivity ratings of 92 or a bit above. I’ve read they sometimes dip below 4 ohms.
Would I encounter any problems driving this system with a 1080 or 2080 Yamaha, or last year’s model 3070?
I also plan to run a 500 watt SVS SB2000 sealed sub, maybe two.
This would go into a 19 x28’ great room/kitchen with a 13’ vaulted ceiling. Don’t think a sound bar would cut it sonically.
I have a newly-restored 1970’s vintage McIntosh 2105 power amp rated a 105 wpc lying around that I could plug into the system if need be.
I’ve been advised to pick up a 4400 Denon rather than a Yamaha, and quite frankly, I have no experience with either brand.
But all things being equal, I’d lean more towards the Yamaha, as it seems to be a higher quality piece.
So, is there a Yamaha in my future? I’m open to suggestions.
Thanks! Didn’t mean for the post to be so long.
I demo'd a Denon X4400 and my Yamaha A2080 with KEF R3's which are 8 ohms speakers, 87 db sensitivity and drop to about 3.2 ohms at around 45 and 150 Hz.
I might have been a little biased to the Yamaha because when I first got my R3's I was used to the sound of my older barely above budget Yamaha RX-V473 that i already had running small Energy micro satellite speakers. For the AVR upgrade after doing a little research I tried the X4400.
To me the bass was a lot more rich, muddy if you will, than the Yamaha's. I really liked how tight and distinct the bass was with both the Yamaha's so that was what caught my attention first. Also, the Yamaha had better instrument, vocal, and definitely channel separation. So it seemed again, to my ears, that the Yamaha was more appealing because it seemed a little "brighter" and clear.
Now that's not to say the Denon is worse. There were some times I missed that heavier, muddier, richer bass, like in some movies. So I guess most of what I've said so far pertains more to what you might call critical music listening. I really like the Yamaha for both 2.0 and 2.2 channel music listening.
Also, being new to comparing AVR's, I may not have given myself enough time to try all the different digital settings that change the sound signature.
They say the Denon's Audyssey room correction is far superior to Yamaha's YPAO and is often a big reason alot of people choose Denon.
My recommendation is to demo both and make sure you understand all of the settings within the AVR to make sure you don't get a skewed impression. Different settings can make a huge difference. Crutchfield is awesome for this with a 60 day trial period with full refund.
And lastly, the A2080/3080 users manual states explicitly that you can use 4 ohms speakers for your front L/R. Just make sure you change the factory default 8 ohm setting to 6 ohms. So no worries about the equipment specs when running your 4 ohm speakers.