It's this exact model.
www.audiosciencereview.com
most AVR will handle 4Ohm speakers just fine. The tricky one is 2Ohm and variable impedance. You can see in the review it can provide 142 wpc with 2 channel, 4 Ohm, which is plentyCurrent fronts are 86 db sensitivity in 6 ohm. The rears will be 86 in 4 ohm . My current AVR is only rated at like 90WPC and is not 4 ohm rated.
Review and Measurements of Sony STR-ZA1100ES AVR
This is a review and detailed measurements of the Sony STR-ZA1100ES Audio/Video Receiver. It is on kind loan from a local member. It costs US $999. It must have price protection as Amazon price is only $1 cheaper. Being part of the ES series from Sony, one expects good look and feel and...
Well those measurements show it can do about 100W into four ohms. And more than the 90W at 8 ohms you mentioned in the post I replied to.It's this exact model.
Review and Measurements of Sony STR-ZA1100ES AVR
This is a review and detailed measurements of the Sony STR-ZA1100ES Audio/Video Receiver. It is on kind loan from a local member. It costs US $999. It must have price protection as Amazon price is only $1 cheaper. Being part of the ES series from Sony, one expects good look and feel and...
This is the important bit - if you want to upgrade, do so for features, not for amplification, which won't be significantly better.
I like that to but let's be honest, you setup it once and leave it to media rack. Any difference in build quality will soon be forgotten. Reliability is harder to measure but as long as you get 3 years of warranty, not a concern
Both Denons I had previously died multiple times the final time out of warranty. Which is why I was always gun shy on them. Yamaha and Sony by comparison were always rock solid for me.I like that to but let's be honest, you setup it once and leave it to media rack. Any difference in build quality will soon be forgotten. Reliability is harder to measure but as long as you get 3 years of warranty, not a concern
I bought x4800h at good price but the shop is likely NOT shipping it, so I bought x3800h on discount from amazon, on my way home tomorrow. I'd be happier with x4800h if it was actually delivered (perceived value on RRP), but either case, good for me
could they be repaired?
They are really old and got tossed. The 1912 I actually had repaired under warranty twice. I got it refurb from Accessories4less. They actually were great. How ever it died a third time right after warranty ended. I replaced it with a cheap Yamaha that was rock solid.
Thikk that is generally correct, but as I understand you would not want to push to +12dB boosts as it could potentially clip the pre-amp, especially at higher master volumes. So depending on the setup and gear, it might give you more limited adjustment range.
I'm curious why you halved the power when the resistance is also halved. I remember V = IR from physics: if [V]oltage is held constant and you halve the [R]esistance, doesn't the I (current) have to double to compensate?
Yes, but if you already get the maximum current available, then it can't double.
He did it as I would do it too, because he assumed, as stated that the maximum current was based on 8 ohms. So using the same current, as you know, power = I^2*R, so half the resistance would end up with half the power/wattage. If you held the voltage constant, then yes, you get double the power (only if the amp can output double the current). It is highly unlikely that AVR amps can double the current from 8 to 4 ohms, except it is obvious that the mid range D+M AVR amps can approach that for short duration (seconds, or a minute, we don't know..).
No harm trying, but be careful with the volume dial, after running auto setup/Audyssey (assuming you are in fact getting the Denon), check that the trim settings are within a couple dB to 0. If so, then I would say you can safely run your 4 ohm speakers with volume dial well below 0, up to -12 should be safe enough but I would keep it below -15 at all times. For longevity reason, I would definitely use a quiet fan to blow from back to front (to minimize dust depositing inside the enclosure).
What speakers did your Denon avr die from?
It definitely wasn't from driving it hard. I didn't really listen loud. 1912 was Mirage Nano Sats and the 3400 was Klipsch Reference Premieres.
That's weird then, I have had quite a few Denon AVRs over the years, the oldest one is the 3805. also had the little 1410, 1912, then the 4308, 4400 and no issues with any of them. May be it was just tough luck? I hope that won't discourage you from getting the 3800, 4800 or 6800, or even the Cinema 50, 40, if in EU countries.
Same experience here. You are obviously free to choose other brands, and some of the recently announced AVRs with Dirac ART might be the opportunity. But then none of them really come with the same record of being reliable as D&M does.
This was in several different houses and the Yamaha and Sony I replaced them with have been absolutely rock solid. So I don't think that's it. I guess I just got extremely unlucky. Because no one else seems to have a similar experience. It's hard to ignore though when other brands have all been much better as far as reliability. Though it's obvious Denon offers the best value proposition, which for me is very frustrating haha.
