Audyssey Manual Calibration “OCA’s REW + Audyssey Awesomeness”

[pdodo2003]

Hello to everyone . I hope you can give me an idea of how to approach my situation . I played a lot with OCA's EVO from the beginning . It was simple because i had one sub , but now i have one sub and i bought a bass shaker . So how would i approach this , because in measuring with audissey my bass shaker doesnt produce sound . I found a way around this by simply connecting the same subwoofer to my output 1 and 2 on my Denon X3500H receiver .
Any regards about this situation ? How can i be sure it makes what is supossed to do ? Because i kind of fool EVO saying that i have 2 subs but i dont have just one ... Is this the correct way ?
Because i get this error :
10:44:32 PM [WARNING!] SWMIX: 3.38 meters, please SWITCH this subwoofer's POLARITY!
10:44:32 PM [WARNING!] You will need to switch polarity of EACH of your 2 subwoofers!
But i dont have this option, possibility, because i exit from SUB Output 1 with 1 RCA for sub 1 and 1 RCA for bass shaker . I think i get this error, because it's the same sub and the same place , but i cant think of what i could do .

Denon X3500H - Windows - Android app

I thought i try the nexus version because i have a umik 1 mic , but for now i dont really get everything i have to do in it ,so i am postponing it for now , and instead try as allways the EVO version .

Thank you

 

[Tony1919]

Hello to everyone . I hope you can give me an idea of how to approach my situation . I played a lot with OCA's EVO from the beginning . It was simple because i had one sub , but now i have one sub and i bought a bass shaker . So how would i approach this , because in measuring with audissey my bass shaker doesnt produce sound . I found a way around this by simply connecting the same subwoofer to my output 1 and 2 on my Denon X3500H receiver .
Any regards about this situation ? How can i be sure it makes what is supossed to do ? Because i kind of fool EVO saying that i have 2 subs but i dont have just one ... Is this the correct way ?
Because i get this error :
10:44:32 PM [WARNING!] SWMIX: 3.38 meters, please SWITCH this subwoofer's POLARITY!
10:44:32 PM [WARNING!] You will need to switch polarity of EACH of your 2 subwoofers!
But i dont have this option, possibility, because i exit from SUB Output 1 with 1 RCA for sub 1 and 1 RCA for bass shaker . I think i get this error, because it's the same sub and the same place , but i cant think of what i could do .

Denon X3500H - Windows - Android app

I thought i try the nexus version because i have a umik 1 mic , but for now i dont really get everything i have to do in it ,so i am postponing it for now , and instead try as allways the EVO version .

Thank you

I think you run audyssey as normal then you do your thing in OCA Evo/REW program and then set up your bass shaker once everything is finished.
The 3.38 meter warning is because the EVO cannot do over 3 meters? I get this message when I use a second amp to run the front speakers using the pre outputs on a marantz 7015.

There are some good videos on youtube showing how to set up a bass shaker maybe if you watch them you might spot what you are doing wrong or need to change to get it to fit in to your set up. search youtube for "how to set up bass shaker"

 

[Hyacin]

I didn't understand your question. Is this about Nexus filters and you want to go full range?

Sorry, yeah, that was a long winded question and not terribly clear.

No, I'm talking about Audyssey channel corrections, and avoiding the steep rises at the edges (I thought they were drop-offs, but I guess I was thinking about the measurements, not the corrections) ... essentially, rather than this -

I'd like it to look a bit more like this -

(or a rolloff instead of this silly steep drop at the high end)


The spike especially at the low end is simply "the speakers can't do those frequencies", so rather than boosting them crazy amounts, I'd rather just leave them alone.

I'm guessing it's something _similar_ at the high end? Or maybe the speakers are capable but the mic just wasn't picking it up well? These were old UMIK measurements I'm sure.

Almost like a rule, "don't bother trying to correct if it's off by more than 12 dB" or something, as it's probably just a limitation then that we shouldn't bother with.


Related but separate question - I'm seeing now that the correction filters stop at 20k - is there a rolloff back to 0 dB within the receiver after that? Or does it just abruptly drop off? I'm guessing the above filter would have absolutely no impact on supersonic stuff, at say, 30 kHz?

 

[OCA]

It's not a boost at the HF, Evo does not boost any frequency and doesn't even cut above 250-300Hz. This is the anti reference filter that just reverses the high frequency roll off 1 of Audyssey which comes pre-applied with your measurements. Unfortunately, it really is about a 20dB drop above 20kHz for no apparent reason.

 

[Hyacin]

It's not a boost at the HF, Evo does not boost any frequency and doesn't even cut above 250-300Hz. This is the anti reference filter that just reverses the high frequency roll off 1 of Audyssey which comes pre-applied with your measurements.

I'm using the old 'Ultimate' method, but I'm guessing it's the same? Good to know it's just to counter that roll off

Unfortunately, it really is about a 20dB drop above 20kHz for no apparent reason.

OMG really, built in I'm sure? Any idea if that's ALL Audyssey, or would, say, an AV10 where they're really trying to push that HiFi audiophile angle (which tends to include a lot of emphasis and even dedicated hardware for that supersonic stuff) possibly not have it?


Edit: You know, I guess it matters a lot less than I think as movie/TV sources likely don't have any content about 20 kHz or so anyway, and the things that should I'll probably be listening to in "Direct" mode anyway.

 

[OCA]

I'm using the old 'Ultimate' method, but I'm guessing it's the same? Good to know it's just to counter that roll off


OMG really, built in I'm sure? Any idea if that's ALL Audyssey, or would, say, an AV10 where they're really trying to push that HiFi audiophile angle (which tends to include a lot of emphasis and even dedicated hardware for that supersonic stuff) possibly not have it?


Edit: You know, I guess it matters a lot less than I think as movie/TV sources likely don't have any content about 20 kHz or so anyway, and the things that should I'll probably be listening to in "Direct" mode anyway.

Most Marantz have an additional soft roll off. New models can switch it off with filter 2, older ones are stuck with it. Nexus has an anti filter for that, too.

 

[Hyacin]

Nexus has an anti filter for that, too.

<3 <3 <3

Can't wait to try it!!

 

[TheZebraKilledDarwin]

Most Marantz have an additional soft roll off. New models can switch it off with filter 2, older ones are stuck with it. Nexus has an anti filter for that, too.

Some time ago I suggested a solution that would make it possible, to trick Audyssey even further, and make it correct a faked speaker response AND be able to switch between the Reference curve selection with the HF rollof and the Flat curve, without the rolloff.

Today I found a little time and it seems it is possible:

What you see here, is (ratbuddyssey for quick check if the injected data is working as intended) a EQed perfect speaker response injected into ADY!
The peak you see as speaker measurement, is a (fully deliberately set EQ (58 Hz, +12 dB, q 10, mimicking a measured room mode) applied to a perfect speaker response.

If loaded into MultEQ Audyssey will be interpreting this fake measured speaker response as a real response and will apply it's correction torwards removing the peak.

Intended benefits:

1. USER defines what Audyssey will correct (but not with the custom target curve, but with faked speaker measurements):
Only the filters the user wants, REW will apply. Everything else remains untouched as perfect speaker.
For example: if you only want to correct to 300 Hz, you only apply the EQs you want in REW to 300 Hz (in the example above a 58 Hz room mode was simulated and is all that Audyssey will see).

2. No longer unuseable FLAT curve. It should be possible to switch between FLAT correction (for music without hf rolloff) and Reference, with the hf rolloff.

3. You additionally even have the custom target curve available for the Reference-curve-mode, for further adjustments.

4. You are free to apply any EQ curves with/without house curve as you wish as fake speaker response in REW.


If there is interest I could post the detailed step by step procedure.

 

[OCA]

Some time ago I suggested a solution that would make it possible, to trick Audyssey even further, and make it correct a faked speaker response AND be able to switch between the Reference curve selection with the HF rollof and the Flat curve, without the rolloff.

Today I found a little time and it seems it is possible:

View attachment 405197


What you see here, is (ratbuddyssey for quick check if the injected data is working as intended) a EQed perfect speaker response injected into ADY!
The peak you see as speaker measurement, is a (fully deliberately set EQ (58 Hz, +12 dB, q 10, mimicking a measured room mode) applied to a perfect speaker response.

If loaded into MultEQ Audyssey will be interpreting this fake measured speaker response as a real response and will apply it's correction torwards removing the peak.

Intended benefits:

1. USER defines what Audyssey will correct (but not with the custom target curve, but with faked speaker measurements):
Only the filters the user wants, REW will apply. Everything else remains untouched as perfect speaker.
For example: if you only want to correct to 300 Hz, you only apply the EQs you want in REW to 300 Hz (in the example above a 58 Hz room mode was simulated and is all that Audyssey will see).

2. No longer unuseable FLAT curve. It should be possible to switch between FLAT correction (for music without hf rolloff) and Reference, with the hf rolloff.

3. You additionally even have the custom target curve available for the Reference-curve-mode, for further adjustments.

4. You are free to apply any EQ curves with/without house curve as you wish as fake speaker response in REW.


If there is interest I could post the detailed step by step procedure.

You have to distinguish models with Cirrus Logic DSP chips for perfect speaker response. It needs to be an inverted mic calibration file.

 

[TheZebraKilledDarwin]

You have to distinguish models with Cirrus Logic DSP chips for perfect speaker response. It needs to be an inverted mic calibration file.

Sure, no problem. My method allows any number and all kind of eq curves to be merged with the perfect speaker.