Onkyo TX-NR818 "official" owner's thread discussion - Page 133

that could be the problem ,u might require some power conditioing like the monster power strips offer.

Yes, you're correct. I've messed around with the NR and EE features and didn't notice any improvement with the NR, so I now have it off. The EE on low is ok and does sharpen the picture but anything higher adds a lot noticeable ringing. I now leave it off also.

How many times I need to repeat that! It doesn't matter, there should be no any boost below detected frequency. Under any circumstances. Period.
Even if I will show you all 8 positions, the average, it will not explain or justify in any way this boost as it is BELOW THE CAPABILITIES OF SPEAKER in a room so ONLY the electric response matters here as acoustically with that frequencies there can be only distortion at any reasonable level. If you cant understand that... Sorry - you cannot be helpful.

I have been working on setting up my speakers and have a problem I cannot figure out. Originally, I set up the system with center, front right and left, and surround back right and left. Both the surround back right and left are in the wall. I tested everything using my old speakers (except the back surrounds, which I ordered from Monoprice) and received sound in all the speakers.

I ordered Polk 70 Monitors for the front right and left, and wired them up using the bi amp. I also wired up a new Polk CS2 speaker for the center.

When I turned on the receiver, I received sound to all the speakers. Then I set up the receiver settings to use bi amp. Everything sounded great, however, I noticed that my surrounds in the back were not receiving any sound. I tried all the different sources (music, tv and dvd), and still could not get the back surrounds to works. I also ran Audyssey and no ping noises came out of the back surrounds.

So I took off the wiring for the Polk 70s and wired up my old front right/left speakers to see if I could get my back surrounds to work (like they did before). But I still cannot get any sound. Plus, when I circle through the sound type settings (THX, All Chanel, etc.) it doesn't even list the back surrounds.

So if you could give me any help or advice on how to fix this issue, I would be very appreciative. Thanks!

How many months in a row should I listen for Audyssey calibration tones? I bought the receiver not for doing that constantly day and night.

You don't seem to understand that there is no boost in your graphs. There are cuts right above 40Hz which make it look like there's a LF boost.

You need to do it just once but right. Leave the mic at a single location for calibration and you'll get meaningful data.

Your room seems to exhibit strong modal effects. So it probably would be helpful to do a second test with speakers and/or listening position moved. Audyssey would probably find a very different -3dB point and the filter will look different too. If the "boost" is still observable then something is wrong.

I couldn't observe any suspicious boost in my measurements and I did a lot. There was a problem in older Onkyo models with the way Audyssey handled normalization but this has been fixed. I've posted graphs that show that.

I think that you need to connect your surrounds not as back surrounds but as ordinary surrounds. AFAIR it is the only possible configuration with bi-wiring (limited to 5.1 by this).

I appreciate the idea, however It's not been a problem with my 805, and not been a problem with this 818 that I've had for several months. I've played it much louder before and never had an issue.

So for the sake of argument, let's say power conditioning would help... what the tone signify? Why is there no mention of it in the manual? Is it due to "dirty" power? What is that tone supposed be signaling?

You don't seem to understand that there is a boost BY AUDYSSEY in my graphs. The fact that 40 Hz HPF is applied. If you cant compare two graphs and see that Audyssey is boosting... I don't know how to talk to you then.

The boost happens with all speakers, independent of their position, independent of calibration technique, independent of anything!!! I will not do any more measurements until I get the replacement mic. There is small chance it will fix it (or better tell with it the problem have chances to not be triggered). But, the graphs are already clearly showing there is a problem, if you can't see it - it is only you and your non-understanding. If you cant see problem on my graphs, then you probably will not see it on your graphs. If you go to my original message and link to the Audyssey thread and follow that - you will find on the same page the correct graph from Jerry, so you could compare, and probably will understand what correct behavior should be.

The "wrong normalization", as you say, is actually the pretty right name to how this boost looks.

I am too don't think it is power conditioning. Sounds like something bad is happened within the AVR, contact Onkyo service for warranty, this is the best what I can recommend...

i don't think anybody gives a hoot about your issue anymore. you come across as a blunt richard. markus is simply trying to help you.

It will show TrueHD on the front panel. Babgvant is just telling you that there are other ways to do it ( On-screen or through the Apps).

The high pass filter is applied by the AVR, not Audyssey. Without a HP the magnitude response of the MultEQ filter would by flat, i.e. no boost.

I don't looking for help. Is it hard to understand? What help can I can I get from someone who do not even understands what the problem is... I stated from the start that I am reporting the problem so others can check if they also have it (assuming they understanding what I am talking about). For the actual help I have opened support ticket at Onkyo - if they or their repair center cannot help, how people here can help?

You are wrong. It will be boost there if AVR HPF filter is removed. CLEARLY.

You are exactly right. I switched the back surround to regular surrounds and everything works now! Thank you so much. After spending so much time wiring everything through the basement and walls, and being so close to being done, with no sound coming out of the back speakers f I think I was about to have a nervous breakdown and go to the funny farm.

Well the problem is that you don't understand that your graph is perfectly ok. Your room shows a tremendous amount of modal effects, that's the real problem.

Why not try something that would prove your point? Block the ports of your speakers and calibrate/measure again.

What Markus is doing is helping Onkyo to hide the problem by convincing members here that what I am shown is not a problem by throwing false statements without any real meaningful technical reasoning. As most people [here] are too focused on acoustical response due to marketing and lack of real knowledge and do not understand all reasoning he might sound "reasonable" while he is not.

Do you think I didn't all of that? I am told already that I spent much more time calibrating it than real listening during the time I own it. Your recommendations to do meaningless things are really boring.
I know about the modal effects of my room, but there is nothing unordinary in it - it is just usual untreated room and Ayd. supposed to minimize the modal problems, but not make things worse. Most people here have something similar except few enthusiasts with really well-treated rooms.

Not pretty but where's the boost in the MultEQ filter?

BTW... My center channel is closed box, surrounds also.

Don't you see that with MultEQ it is higher by 10dB than without it (10dB above the black one - the basic level)? And actually it is higher than any other point on the graph above 50Hz...

Yes because the filter tapers off only below the -3dB point. The -3dB point itself still gets equalized which your graphs show.

20 Hz if far from the -3dB point and still boosted by 10 dB.
and -3dB point needn't be amplified by 10dB to get "the flat response".
I already pointed you to Audyssey thread! Look to the Jerry graphs here to see how it should go bellow black line at the -3dB point (the red one in his case) and controlled to be there below F3:
http://www.avsforum.com/t/795421/official-audyssey-thread-faq-in-post-1/58440#post_22748190
Small up to 3dB deviation is pretty acceptable here.

IgorZep,

Do us a favor and repeat the calibration and measurement the way I described it (put Audyssey mic at first measurement location and leave it there for all 3 mandatory runs; measure in-room response at that location and preamp output of one of the speakers with Audyssey on and Audyssey off). Then I will show you exactly why Audyssey is doing what it is doing. Make sure you measure in-room with a calibrated mic.

It did. Look at 150Hz...

Markus, you are too ambitious Do you really believe the boost just disappears? I did 3-position measurements with very close 3 mic. positions several times, results were the same. Always.
I did get better-sounding result occasionally when calibrating with another Aud. mic. but I had it only for a day and have no measurements with that mic... Unfortunately.

Marcus,
You are a saint, man. I'm interested to see what new measurements could reveal.

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