Audyssey MultiEQ app

[Hoary]

When I run a calibration and then look at Room Correction, the "after" doesn't look very smooth and flat compared to results I've seen on several people posting on YouTube.

I'm wondering if this is due to using a budget AVR that may not contain as many filters and/or filter coefficients as the higher end models. I'm using a Denon S760H into the Klipsch Theater Reference pack (5.1).

However, I do hear a positive difference after uploading the EQ file to the AVR.

Any thoughts?

I've attached a file of the result from the Front Left and sub, the sub being a more reasonably smooth correction.

 

[Pogre]

You have Audyssey MultEQ, the most basic version, so yes. I'd venture a guess that's why it doesn't look as smooth as some others you may have seen using MultEQ XT or XT32. There is a difference between the programs, and that's the reason they up charge for the more powerful versions.

 

[Teetertotter?]

Try moving the subwoofer. What are the readings for FR, C, SL, SR? Perhaps the calibration for your speaker and room conditions are correct.

Whose subwoofer do you have? Using LFE on the sub. I also have MultEQ sound on my Denon. Was sub volume at 1/2 volume/gain b/4 calibration? Other adjustments on woofer at correct settings?

What is your set-up and room conditions???

 

[Hoary]

Try moving the subwoofer. What are the readings for FR, C, SL, SR? Perhaps the calibration for your speaker and room conditions are correct.

Whose subwoofer do you have? Using LFE on the sub. I also have MultEQ sound on my Denon. Was sub volume at 1/2 volume/gain b/4 calibration? Other adjustments on woofer at correct settings?

What is your set-up and room conditions???

The other readings are very similar to FL. I am pretty happy with the results although I was contemplating moving the sub around (currently located in left front corner of room).
I'm using the Klipsch 5.1 Theater Reference Pack which includes an 8" downfiring w/single port sub. I have gain at 1/2 and filter set to LFE. Other equipment is simply a Samsung 70" UHD TV in a12x13x9 room

As to the graphs, and after more searching, I'm convinced that the filter hardware is what it is for a budget Denon. If you want a flat smooth response curve across the audio band, you'll have to pay more.

 

[William Lemmerhirt]

Also keep in mind that the post graphs are just predictions of what Audyssey will attempt to get to, NOT the actual room response. I think it would be nice to see the actual after results. This would be more useful in figuring out what to do. The predicted response might be close enough to the actual measurements, but I’ve never A/B’d them with REW to know. Your hunch is also correct about less filters in your version of Audyssey. But it is what it is. And if it sounds better to you then it is!
Also just taking a guess at answering teetertotters question. The sub is a small ported one?
Also, are your LR speakers close to walls? The area from just above 100hz to about 400hz looks pretty rough. I’m thinking boundary interaction. Might be useful to experiment with them, and get them away from boundaries a bit. Maybe that’s not it and I’m just rambling……lol

Edit: I see you responded while I was typing.
I wouldn’t write off the results 100% as having less EQ filters. Positional EQ is rule #1, and it’s possible that you could do better just by moving things around. Again, since the Post results are just a prediction, you’d have to actually use REW to know for sure. Or re-run Audyssey and use the Pre correction results, but that would be a huge PITA!!!

 

[lovinthehd]

While XT and XT32 have more resolution than plain ol' MultiEQ, don't think it will really make that big a difference to general frequency response upgrading to those versions except perhaps in the sub's part of things. With the app you can simply limit the frequency response if you haven't tried that, many just use it for sub-schroeder frequencies in the first place. Then using those graphics is of very limited use, too. You might like this article (both parts, second one might be easier) on that subject to start if not familiar with it https://www.soundandvision.com/content/schroeder-frequency-show-and-tell-part-1

 

[Hoary]

Also keep in mind that the post graphs are just predictions of what Audyssey will attempt to get to, NOT the actual room response. I think it would be nice to see the actual after results. This would be more useful in figuring out what to do. The predicted response might be close enough to the actual measurements, but I’ve never A/B’d them with REW to know. Your hunch is also correct about less filters in your version of Audyssey. But it is what it is. And if it sounds better to you then it is!
Also just taking a guess at answering teetertotters question. The sub is a small ported one?
Also, are your LR speakers close to walls? The area from just above 100hz to about 400hz looks pretty rough. I’m thinking boundary interaction. Might be useful to experiment with them, and get them away from boundaries a bit. Maybe that’s not it and I’m just rambling……lol

Yes, the FL, C and FR speakers are located at the TV which is very near a large flat wall. I can't move the setup (except the sub) since the rest of the room has either a door or closet or window. Sub is 8" downfiring with a single port (on the bottom).

 

[PENG]

When I run a calibration and then look at Room Correction, the "after" doesn't look very smooth and flat compared to results I've seen on several people posting on YouTube.

I'm wondering if this is due to using a budget AVR that may not contain as many filters and/or filter coefficients as the higher end models. I'm using a Denon S760H into the Klipsch Theater Reference pack (5.1).

However, I do hear a positive difference after uploading the EQ file to the AVR.

Any thoughts?

I've attached a file of the result from the Front Left and sub, the sub being a more reasonably smooth correction.

As mentioned by others, Audyssey MultEQ has lower resolution but it can do a good job setting up you subwoofer.

A comparison can be found here:
Audio calibration (perfecthometheater.com)

MultEQ Comparison Chart

Features	MultEQ XT32	MultEQ XT	MultEQ	2EQ
Filter resolution (satellites)	512x	16x	2x	x
Filter resolution (subwoofer)	512x	128x	128x	N/A
Number of Measurement Positions	8*	8*	6	3
Adaptive Low Frequency Correction	Yes	Yes	Yes	N/A
Crossover, Polarity, Delays, Levels	Yes	Yes	Yes	Yes

So you can see that with Mult EQ, you can't expect much difference with Audyssey on or off, except the subwoofer channel.

There is a good chance that you may like the effects better if you select "L/R Bypass" in case MultEQ might have made things a little worse for the most important front left/right channels. Or at least experiment with the App to limit the correction range to say 300 Hz, or up to 1,000 Hz for all channels except the subwoofer channel.

Found an interesting post by someone who took the time to compare XT vs XT32 using his X1400H and X3400H. You can see that even Audyssey's own theoretical prediction for the before vs after graphs showed XT wasn't that good in terms of FR, let alone MultEQ that has 8 times lower resolution for all channels, again, except the subwoofer channel.

Audyssey MultEQ XT vs MultEQ XT32 - Imgur

 

[Hoary]

I played around a bit with some settings after the calibration upload. The best sound to my failing ears comes from:
1) Doing a sound level adjustment
2) Sub crossover to 200Hz, all others to 200Hz (lowest freq. for my F, C, and surround is 110Hz).
3) Audyssey MultiEQ set to "FLAT".
I can't hear anything over 10kHz anyway, so, for me, with the environment I'm in, these settings sound pretty good compared to no EQ. The bass is strong and crisp but not boomy. But I really miss the loss in highs.

 

[lovinthehd]

I played around a bit with some settings after the calibration upload. The best sound to my failing ears comes from:
1) Doing a sound level adjustment
2) Sub crossover to 200Hz, all others to 200Hz (lowest freq. for my F, C, and surround is 110Hz).
3) Audyssey MultiEQ set to "FLAT".
I can't hear anything over 10kHz anyway, so, for me, with the environment I'm in, these settings sound pretty good compared to no EQ. The bass is strong and crisp but not boomy. But I really miss the loss in highs.

There is no "sub crossover". A crossover setting is that between a speaker and the sub. You may mean LPF of LFE setting instead? Normal setting for that is just 120hz, as that is the normal limit of content recorded in the LFE (.1) channel, which is what the LPF affects particularly.