Onkyo TX-NR807 Official Thread - Page 4

For those who are curious whether the amp section measures up to the old 805, it doesn't. The 805 weighed 51 lbs, the same as the 876 does. The 807 is 39 and change, 2 more than the 806.

Absolute performance isn't always (and is actually rarely) the designers' main concern. Also, not all 4ohm nominal speakers have the same impedance curve... some are far more complex within their pass band than others. If your AVR can drive your 4ohm speakers to reference levels in 6ohm/8ohm mode without shutdown/protect, there's no need to engage the current limiter. Current limiting allows AVR designers to cut costs by using a power supply that may not be able to keep up with complex loads since the large bulk of people are using 8ohm nominal loads.


I'd say you're probably right, but I still want to see the bench tests. It's possible that may be indicated by the new Select2 status, especially on the 4ohm side, but it's also possible that distinction is there for better differentiation from the higher-end pieces. While the SR806 was a step down from the SR805, it was not a huge step down with 8ohm nominal loads. I'd say this is possibly the category the NR807 falls into. The SR806 wasn't a weak amplifier, just weaker than the SR805 AND had a lot of other downgrades. If the NR807 fixes all of the deficiencies of the SR806 (the only thing I see that isn't addressed is Audyssey not being XT), but with the same amp section, I'd still call it a winner and a very solid value.

My 805 drives my 7.1 system with all 4 ohm speakers, including Martin Logan electrostatics to eardrum vaporizing volume without a burp, set up as the manual instructs.

I'm sure it does... and electrostats usually represent a fairly complex load. My comment wasn't to say large amounts of power can't be created even with current-limiting in place. I was really saying current limiting isn't always necessary since not all 4ohm loads are that complex with large dips into the 2-3ohm range.

And my SR805 does the same with a mix of 8ohm nominal loads and 4ohm nominal loads, though none are very complex, all in 6/8ohm mode.

Joerod, what were your thoughts on an A/B basis with the denon 4310 and the 807? The lack of analogue inputs has me for the first time of venturing out of an exclusively onkyo house. I know the 4310 is a lot more....

JoeRod I can't wait for you to get the 3007 or 5007 which have 9 amp channels. I have read a lot about height channels and almost all are impressed who experience it. I am a gamer and Dead Space is one of the scariest games I have ever played. I think the height channels could really add to the suspense.

I would love to get pricing on the 1007, 3007, and 5007. Not that I will be buying one of them anytime soon, but for future reference!

Sorry, what does this mean? Is it constantly showing the volume on the TV?

True - I guess the 3310 is the closest competitor from a pure price point. As usual, the Onkyo 807 seems to push the feature envelope.

One quick question... does the Audyssey MultiEQ seem the same as the version present on the SR806? Still the same 2x filter resolution for main channels? I wouldn't find 6 measurement positions limiting, but I would prefer the finer filter resolution since I've identified several different peaks in my room.

Glad to hear that. I have been putting off finally updating my setup for far too long. I was originally going to get a Denon 1910. My how things change.

1 or 2 more weeks and this baby is mine.

Thanks for testing this -- how does it vary though depending on your amp assign setting? I'm not sure how Onkyo does it, but as you know on the Denon there is an "Amp Assign" option where you can specify whether those 6th/7th channels are powering Wides, Height, Zone 2, Surr.Back, Bi-amp, etc.

I'm just confused how you could even get a test tone sweep that includes BOTH the heights and the rears, since it's only 7.1! Maybe Onkyo's system is just different

you da man, thanks for testing. Can't wait for you to get the 4810 which is a TRUE 9.1 channel DSX unit.

805 had MultEQ XT
806 dropped XT (only normal MultEQ) but added Dynamic EQ
807 still has MultEQ + Dynamic EQ, but adds Dynamic Volume

So, yes, the 806 and 807 both have regular MultEQ with 6 measurement points and 2x satellite filter resolution. Unfortunately, dropping MultEQ XT has been a common thing among mid-level receivers these days On the new Denons you have to go to the $2000msrp 4310CI to get XT now.

The Zone2/3 speaker outputs can be reconfigured for Height/Width channels... so I guess it's logical to expect the same can be done on the Pre-Outs... so can it?


Guess no difference from how they handle the Zone2/3 signals right?

I am not sure if anyone else thought about this or not. I know the 807 isonly a 7.1 receiver....meaningit has a 7 channel amp. However joerod was able to power 9 speakers with it. I believe this is what you would call bridging. Guys do it with car stereo amps all the time. I am not sure if anyone else caught it or not, but joerod said all of his speakers are 4 ohms. That is impressive for the 807. But running it with 9 speakers and in esence "bridging" 2 of the channels would mean that those 2 channels saw a 2 ohm load. Very impressive! It sounds like the 807 may have a very impressive amp section, more so than it's weight would lead us to believe. I would love to see the amp section benchmarked!

It's not bridging, but kind-of the opposite, running speakers in series off of one amp channel. The two 4ohm speakers in series would become an 8ohm load. Bridging is basically the opposite, running one load off of multiple channels of amplification.

To run in series you do not use the traditional + to + and - to - wiring. But then again, maybe the internal amp changes it internally. It would be an interesting question for Onkyo- to see how the amp is handling it.

In the car audio environment using a single channel sub amp, a svc 4ohm sub shows a 4 ohm load. If you add a 2nd svc 4 ohm sub to that same 1 channel amp, the load drops to 2 ohm. If you have an amp that can handle the load, that's the best way to get the most power out of your amp. That is what I thought may be going on with the 807, running 9 4ohm speakers to a 7 channel amp- two of the channels would be run pretty hard, unless the amp can do something about the settings.