"Official" Audyssey thread (FAQ in post #1) - Page 1267

I would add this for clarification. Measuring low frequencies (below 50 hz and especially 30hz and below) is very problematic in small rooms. The fact that Audyssey is not perfect in this regard is to be expected. It is an automatic system, and even expensive and complex solutions can have problems in this area I describe. Playing around with sub gain and measurement positions can help. Sometimes a higher gain on the sub amp causes Audyssey to be more accurate down low with the before graphs (could be signal to noise ratio, I don't know). That is where the pro kit shines, you can play around and wait until you get a goog looking before graph.

Right now I have a great calibration, but Audyssye is boosting a touch from 20hz to 25 hz. So I can just goi in and create a custom filter edit, apply it, and bingo. I find that listening to a frequency sweep with Audyssey off and then on (graphs in hand) is very informative.

Other than that, Audyysey does a nice job with the bass (at least to my ears when I audition scenes with it on and off). Dynamic EQ doesn't hurt! Louder is better!

A sub needs thermal or excursion protection in the face of high energy subsonic content. My sub model recently got a protection tweak because HTTYD was prematurely triggering amplifier protection if the "rumble" filter was disabled.

I tend to think of my room as small (<1,500 cf) although it opens into a somewhat larger room. In my case Audyssey brings the sub down a few dB to the "right" level. This is true of both XT32 and the Pro Kit.

Allow me to revise and clarify; my experience has been the opposite. I can't say categorically that it always improves LF response/performance, only that it has for my system and the other three or four I've worked with.

Jeff

A few pages back, Craig posted some XTZ graphs that showed substantially reduced modal ringing. But beyond that, it was all judged by ear.

I have REW data showing MultEQ improvement for my "well treated" room at home on my personal laptop. Can post later if anyone's interested.

Found that I had an older measurement on my work pc (below). These results aren't current, but I do believe current does have similar "overall smoothing" which I'll post later. One other caveat on this graph....I mistakenly ran the EQ on measurement with DynEQ enabled. Biggest diff that I recall with newer measurement was that the hump at 18-23Hz range was diminished.

Is there some way for you to choose other colors? I cannot distinguish the two you have now.

Indeed, I do. They both look pale blue to me. Not identical but not ascribable to the labels indicated.

The XTZ "waterfall/RT60" measurements like those are all single sweeps. How does it matter whether they are made with one speaker or all speakers?


Not an accident, just not used to having to support my every "observation" with charts, or include what charts might have been used.

Jeff

I too am red-green colour deficient, but what I see is purple and green lines...

Maybe it's your monitor Kal...these show fine on mine as purple and blue. To help distinguish the two, the line with the larger null at 80Hz is "without EQ".


Yes I do...at home on my personal laptop. That's the stuff I said I'd have to post later.

Just a note here, when someone says that they have a color-blindness, it is their eyes and not their monitor.

Markus, thanks for the info and the time you put into this. Unfortunately, the doors are important so I can't flip it 180°.

I had pushed back the MLP about a year ago for a party and never moved it back up. I now have the MLP at 13.5 feet and that's about as close as I can get since my projector lives underneath the coffee table that sits in front of the MLP. This puts my SL & SR at about 95°.

I pulled the trigger on an Onkyo TX-NR5008 yesterday so I'll be able to mess around with Audyssey in a few days. I'll move my fronts farther to the left and right of the screen and then try out some speakers for the heights/wides to see which sounds better.

Thanks for everyone's help and if you have any further suggestions, let me know.

OK Kal....just for you.

Interesting reply Jeff, I have always found it interesting that when someone finds out that I see things differently (visually that is! ) they say "that must be weird..." I usually reply, it has always been the same for me, and I point out that the name for a colour is somewhat subjective, just look at what the car companies or house paint companies call the various colours they use.

Still, even my wife uses this as the excuse that I make questionable choices for colours when it comes to cars, decorating or the like!

(BTW, I know that this is totally different the setting colours for a display, or painting a wall, but the truth is as long as I can match the colour on the screen or wall to a known standard, I will "see" what is expected. Whether I like it or not is another matter entirely.)

At least I think that my hearing is still OK.

It depends on the ratios of long and medium wavelength receptors. Not all of us R/G deficiency sufferers suffer equally.

Thanks.

For RT60/decay, which is what I mentioned (because it was the easiest to "see" in a graph), it makes a difference whether the room was energized with one speaker or multiple speakers?


That's a problem then because my opinion is always absolute fact.

When I posted that I had not yet seen his confirmation of it. The replies on this thread come faster than my wife can spend money.

Markus makes a good point about calibration relying on any of our senses, unfortunately there are a lot of folks who mistake these adjustments to sound and colour as 'calibration' when in fact it it is just personal preferences...

Nothing wrong with preferences, but they are not calibrations.

Al et al .. lol

I have made .5dB tweaks to the Pro target curve that I could not "see" on system response measurements, but yet were audible to myself and the two other chaps that were helping. One could argue that it could have been measured with more sophisticated gear, but then my reply would be that who besides a pro acoustician would have such gear?