Audyssey One - Nexus (Automated hi-res Denon/Marantz calibration with REW/Umik-1/2)

[peng]

New amps arrived and I first did the stock Audyssey MultEQ App calibration. Results are FAR better compared to stock measurements on the old 26dB gain + 19dB gain amp setup. Now both are 31dB gain and it seems Audyssey really is made for this gain range. The bass and MultEQ are on par with the adaptive loudness module of E-APO. In the next days I will try Nexus again, but I am pretty sure the results will be great.

One question: Instead of the Atmos sweep, can't I just use the REW sweeps at 48 Khz and 0 to 24000 Hz range? I am asking because making many sweeps is a manual process with the provided dolby sweep and with REW I could just set my speaker to, let's say, 64 measurements, walk away, and come back to the job done. Wouldn't that be the same measurement data?

Why would the amp gain matter whether it is 29 dB or 32 dB? Once level matched between channels, it should be fine too if different ext. amps are used.

 

[anphex]

Why would the amp gain matter whether it is 29 dB or 32 dB? Once level matched between channels, it should be fine too if different ext. amps are used.

Dynamic EQ Offset. It expectes a certain reference gain. Meaning, when you have a amp with 10 dB gain you'd have to ramp up the volume on the AVR so much that Audyssey thinks "Man, this guy is listening so loudly, he'll probably way past the point of needing loudness correction".

 

[peng]

Dynamic EQ Offset. It expectes a certain reference gain. Meaning, when you have a amp with 10 dB gain you'd have to ramp up the volume on the AVR so much that Audyssey things "Man, this guy is listening so loudly, he'll probably way past the point of needing loudness correction".

Thanks, I didn't notice you were talking about DEQ.

 

[peng]

Dynamic EQ Offset. It expectes a certain reference gain. Meaning, when you have a amp with 10 dB gain you'd have to ramp up the volume on the AVR so much that Audyssey thinks "Man, this guy is listening so loudly, he'll probably way past the point of needing loudness correction".

By the way, the trim level settings will also affect DEQ and DV, though a couple dB may not make a noticeable difference but it mat, depending on...

Same thing for eco auto.

 

[PHD]

Nexus final version (3.0) was released a week ago and it seems stable and bug-free now.

 

[popej]

Meaning, when you have a amp with 10 dB gain you'd have to ramp up the volume on the AVR so much that Audyssey thinks "Man, this guy is listening so loudly, he'll probably way past the point of needing loudness correction".

It is not the gain alone, but gain + speakers efficiency. Even without external amps, speakers efficiency varies very much, so Audyssey have to compensate for gain. And I haven't heard about DEQ problems because of speakers.
Maybe your problem is not related to amp gain?

 

[RocShemp]

Correct, in essence.

1. The original version (A1 / Evo) used the Audyssey setup process (which EVERYONE with a Denon / Marantz receiver has access to) to run the sweeps and create the .ADY file, which is then processed using the script + REW to calculate levels / distances / crossovers / EQ, which are then stored in the .ADY file and uploaded to the receiver using the iOS MultEQ app.
2. The latest version (Nexus) follows the same process but uses external (read: longer, more accurate) sweeps and REW + a calibrated mic to create the measurements. Once the measurements are created, the process is basically the same; i.e., the script drives REW via API to do the calculations, creates the .ADY file, which is uploaded to the receiver using MultEQ again.

A1 / Evo is virtually fool-proof to anyone with a minimal knowledge of how to upload / download files, while Nexus requires a bit of additional knowledge / fiddling but the results are a bit better because you're starting with more accurate measurements. OCA has also added some updated logic to the script which he plans to retrofit to EVO after the dust settles from Nexus.

So I should start with A1 EVO to get the hang of it, instead of jumping straight into A1 NEXUS?

How user friendly is all this? And am I correct in my understanding that either version has the added benefit of keeping Audyssey Dynamic EQ/Volume functioning as intended (albeit with better measurements) but with the 6 dB surrounds boost removed?

 

[emptygreat]

So I should start with A1 EVO to get the hang of it, instead of jumping straight into A1 NEXUS?

How user friendly is all this? And am I correct in my understanding that either version has the added benefit of keeping Audyssey Dynamic EQ/Volume functioning as intended (albeit with better measurements) but with the 6 dB surrounds boost removed?

It depends. If you have a measurement mic like Umik, you should start directly with Nexus. If you don't have one, and use Audyssey's mic that comes with the AVR, you can either do Nexus or A1 Evo Maestro.

I haven't tried Evo Maestro, only previous versions and now Nexus. If you know the basics on how to make measurements with REW, Nexus is quite straightforward, and way easier than what the video makes it seem, specially after you go through it once.
Previous versions required a lot of steps in REW, but Nexus really makes it a one click job, after you've made your measurements, and named them correctly.
Regarding Dynamic EQ, if I understood correctly how the correction system is working, it already compensates for it, and there's an accompanying script to make even further adjustments. I'm currently running it with Dynamic EQ but without the script, and so far so good.

 

[anioq]

It is not the gain alone, but gain + speakers efficiency. Even without external amps, speakers efficiency varies very much, so Audyssey have to compensate for gain. And I haven't heard about DEQ problems because of speakers.
Maybe your problem is not related to amp gain?

There's only so much level gain 12db available? So if the amp needs more, will have to use the volume control to compensate, and that will affect dynamic EQ level. Now I wish the DynamicEQ reference level setting can go negative dbs

 

[500Homeruns]

Is there a reason that my Speaker Distances would all show 9.1 Feet instead of being zero after uploading and installing the REW Dynamic EQ ady file?

 

[Andysu]

Is there a reason that my Speaker Distances would all show 9.1 Feet instead of being zero after uploading and installing the REW Dynamic EQ ady file?

place the mic close to the speaker to speaker see if it does better freq and see if it senses being nearer to the speaker ?

 

[jhwalker]

Is there a reason that my Speaker Distances would all show 9.1 Feet instead of being zero after uploading and installing the REW Dynamic EQ ady file?

I believe this is actually the default OCA put in the script just as a starting point. There is a reason behind it I don't recall, but he commented on it on the AVSForum thread and confirmed it is irrelevant to the final outcome.