"Official" Audyssey thread (FAQ in post #1) - Page 1207

Originally Posted by markus767

No, his AVR should be able to drive his speakers easily.

Originally Posted by batpig

defective mic would be the most likely cause but he has already ruled that out by trying it with the mic from his AVR 1610

Originally Posted by gamelover360

I have audyssey pro and a couch that folds out into a bed as my place to sit. We keep the couch folded out so we can lounge out while we watch movies. The tripod mic stand works fine for all measurements except the 3 closest to the screen. I really don't have a good way to position the stand to get 3 feet forward of the MLP without the stand being between the front speakers and the mic. In the past I have kept the stand behind the couch and leaned it forward at an angle against the back of the couch so I can get about 2 feet forward of the MLP.

I have an idea. All my mic positions fall over the couch area except the 4 measurements behind the MLP. So I was thinking of setting the pro mic on a smaller stand I rigged up directly on the couch. That way I am not messing about re-adjusting the stand for every measurement and I can get the front three measurements the recommended 3 feet. Anyone see any issues with this approach?

By the way, my rigged up stand is a wooden dowel with a sturdy square base used to hold our paper towel roll in the kitchen. I just tape the regular audyssey mic to the top. It gets perfectly straight with the correct grazing incidence that way. I was thinking of unscrewing the end piece that holds the pro mic and taping that to the top of the wooden dowel, that way I can still adjust the pro mic via the rubbery bendable part. Plus I usually wrap the wooden dowel with my daughters scarf to blunt reflections from the wood. I then set the paper towel holder on a couple blu rays to get the correct height. I have been using the standard mic with this setup with my new 80.2 until I get my pro kit back from my friend.

Anyone see any issues with this setup and the pro mic. I wouldn't think the wood is anymore reflective that the pro mic stand. Plus the wooden dowel will be a good 6 inches below the mic tip. And the extra height from the pro mic's adjustable arm will eliminate the need to set the paper towel holder on blu rays.

Yes, I know I have issues.

Originally Posted by batpig

yes and yes. Peculiarities of room acoustics / physical placement could "trick" Audyssey into reporting a phase warning. For example, my right surround often reports a phase error when running Audyssey.... but there is a little hallway right behind it leading to the bathroom, so I am assuming there are weird echoes/reflections causing the problem (wiring is correct).

And there have also been many reports of speakers that were internally mis-wired with one of the drivers in reverse polarity.

So it could be a "false positive" caused by room acoustics / speaker design.... or it could be correctly catching an issue with the speaker's internal wiring (less likely).

Easy test: swap the right and left speakers. If the error "sticks" with the right speaker, you know it's a false positive caused room acoustics. If the error "follows" the right speaker and now reports an error for the left speaker, you know something is up with the speaker.

Originally Posted by IceTBC

NOT an Audyssey expert here but several people in this thread have reported that happening in their systems and they found they had a blown tweeter/driver in their speaker. Check your speaker for that.

Edit add: Looks like batpig also gave you some perhaps better things to check. I forgot about folks reporting internal speaker wiring problems. I consider him an expert.

Originally Posted by bweissman

Sure, something could be wired backward inside the speaker. Did you ever have a speaker driver replaced? Could have been accidentally wired out of phase.

Find a Disney disc with the THX Optimizer. This provides some handy test tones which will make it obvious to your ears whether the speaker is out of phase.

Originally Posted by gamelover360


Yes, I know I have issues.

Originally Posted by ghstudio

With all due respect, I don't think your issues are audio You are overthinking the setup in a quest for perfection that you will never hear.

You do not have to sample all of the possible places your head might be. Select reasonable points....stay within the space between your front speakers...and your sound will be indistinguishably the same as if you carefully measured each position, made sure the stand is isolated, etc.

Originally Posted by gamelover360

My subjective impressions say otherwise. Oh, Pepar, can I get a link about the wood resonances?

Originally Posted by pocketcash

I found that the best way to fix a denon Audyssey problem is to get a onkyo with Audyssey.

Originally Posted by Fastslappy

Ok Pepar what wood would you suggest ?

Originally Posted by Fastslappy

I took your advice I got a TX-NR5008 & I'm Very Happy with it.
It sounds Soo much better !
Adding a Emotiva UPA-7 to get me some headroom ..

Originally Posted by pepar

yes, a separate input selected for zones other than zone 1. they do not convert digital inputs to analog. for our secondary system we have hdmi from cable box to avr and the "red & white" as well to a different input.

Originally Posted by ghstudio

If you are going to use a wood dowel, by far the best wood comes from the Pennantia baylisiana tree. Not easy to find, but if you are serious about your system, it is a must.

Originally Posted by Gotchaa

Well I did the speaker swap and the Phase error followed the speaker, also test tone sweep with Avia it was hard to tell if there was something blown. I made sure to disable audyssey and put the Denon in "pure mode".







So what if it is the wiring, how could I tell? These are Monitor Audio GS20's.

Thanks all for the advice, what should I try next opening it up?

Originally Posted by JHAz

Wrong wrong wrong. You need new growth Brazilian rosewood. Of course it's illegal to cut Brazilian rosewood, so your price will be, shall we say, elevated. But so will the performance of your dowel. WELL worth it. Ask anybody.

Originally Posted by Pletch

Hi Audyssey gurus. I originally posted over in the 4311 thread and it was suggested that I might get more help here. Here are my EQ results for the Audyssey profile.

Similar to some of the others here, my spectra show a continuously increasing trend in the boost at the top end for nearly all of the 7 channels. I would not expect to need this kind of treble boost as my room is not yet finished (no carpet, minimal furniture, no treatments on the walls etc.). I couldn't resist the temptation to test out my AVR-4311 and wanted music as I completed the finishing work.

My speakers are ACI Sapphire Fronts/ ACI Essence Center / ACI Emerald surround backs / and some NHT SB1's for the surrounds. I am using two ACI Maestro's for the subs.

The profile for the center channel is the worst of the bunch but I am certain I do not have a blown tweeter as I have shuffled the Scanspeak tweeters between the front and the center speakers with no change in the resultant EQ profile. I have also found little response when varying the mic height and/or making subtle changes to the speaker toe-in or positions prior to performing the EQ process.

While I don't have a great baseline since the theater is currently a work in process, I am not really happy with the sound results of the Audyssey correction at this point. I do know I liked the sound of my speakers in their former location in my former home. I gravitated to the Denon 4311 specifically for the XT32 and sub equalization.

Surely the results will change some when I get the room completed however I am skeptical that the boost in the upper frequencies will drop in response. Hopefully this isn't the only attainable results I can get when using Audyssey with my system.

Could this be the result of a bad mic?

Tim

Originally Posted by JHAz

The result followed the speaker, so do not worry about it. Some speakers have the mid and tweeter wired in reverse polarity to obtain the best frequency response on the listening axis. No reason to suspect that both speakers are wired wrong versus the manufacturer's design

Originally Posted by pocketcash

Being a newer denon I can easily go with that. I know that Audyssey calibration will rerun the test tones at a much higher level for the second time, if the first set is to low. If the amp can't put out or the mic can't hear a sound level that is in range that is needed for calibrations.

Originally Posted by millerwill

Or need to get an old D-28.

Originally Posted by Gotchaa

When I moved the speaker from the right channel location (where the phase error was reported) to the left channel location, I saw the phase error reported in the left channel.

Since I bi-amp, I disconnected the tweeter/mid terminal on both front speakers are ran a test tone, sounded like bass was lower. I then did the same for the tweeter/mid's sounded the same.

I then ran the measurement again with correct polarity from amp to speaker terminals. Phase error on Left speaker again.

Then I reversed the Bass terminal -/+, ran the measurement and it had no phase error in the left channel this time.

This leads me to believe that the internal wiring for the speaker was reversed for the Bass driver...is this a correct assumption?

Attached is the final wiring which is now measuring without phase error, keep in mind the wiring from the amp was correct +/-, checked 4 times!

Should I leave it like this or attempt to open it up and check the internal wiring?

Originally Posted by JHAz

The result followed the speaker, so do not worry about it. Some speakers have the mid and tweeter wired in reverse polarity to obtain the best frequency response on the listening axis. No reason to suspect that both speakers are wired wrong versus the manufacturer's design