Room correction

[MCG555]

1. No, because then there is also a reduction at the rest of the range, and I’m not looking to reduce at 60Hz, 50Hz, 35Hz, etc. Generally, it is best to have the room correction apply a gain reduction in one spot that attempt to raise gain in multiple places.

2. I don’t think that is the optimal use of the room correction. You need to get the total system as close to optimal as possible before applying room correction. You don’t want room correction having to apply massive (+/- 6+ dB) corrections, as the bigger the adjustments, the higher the likelihood of phase and distortion issues. You want room correction to do as little work as possible.

I also have a rather annoying null around 180Hz and I need to focus the room correction on that region of the spectrum to cut it down.

-Ed

Well, up to you…

 

[harkpabst]

I can set that in the Sub…

The discussion was about why independent left/right room correction is currently not available with the subwoofer integration of the WiiM Amp, WiiM Ultra and Wiim Amp Pro. Of course, you can suggest to ignore the sub management feature altogether and go with the old and very limited approach of high level inputs on the sub. That's just not worth it in my book.

You can always use stereo arc with subwoofer management. You can also decide to buil your own left/right room correction filters e.g. using REW as @slartibartfast has just demonstrated. You can decide to not use room correction at all and just set GEQ filters to your liking. There are many ways to go ahead. From my point of view they are all superior to using high level sub inputs. The WiiM Amp and WiiM Amp Pro don't have line outputs, so attaching a sub this way isn't even possible.

There's no sensible reason to give up the best feature regarding sub integration (the high pass and low pass filtering) just because WiiM's automatic RC currently does not support independent left/right RC and sub out at the same time.

I originally thought you were suggesting to temporarily connect the sub in a different way, run left/right RC and then connect the sub again as before. That won't work, thus my former response.

 

[Fralle]

I briefly tested the LR vs. stereo comparison earlier today, but to my ears, the results didn’t differ significantly. Interestingly, the graph for the left channel was quite different from the right one. Perhaps my hearing isn’t sharp enough for this hobby anymore. Does anyone else find the results to be very similar and difficult to distinguish?

Regarding the beta multiple test option: should we use it or not? What is beta about it?

 

[rccarguy]

I briefly tested the LR vs. stereo comparison earlier today, but to my ears, the results didn’t differ significantly. Interestingly, the graph for the left channel was quite different from the right one. Perhaps my hearing isn’t sharp enough for this hobby anymore. Does anyone else find the results to be very similar and difficult to distinguish?

Regarding the beta multiple test option: should we use it or not? What is beta about it?

Different responses for the speakers is quite normal. With rew left and right are quite different

Beta mode tests each speaker three times and premise averages them

 

[MCG555]

The discussion was about why independent left/right room correction is currently not available with the subwoofer integration of the WiiM Amp, WiiM Ultra and Wiim Amp Pro. Of course, you can suggest to ignore the sub management feature altogether and go with the old and very limited approach of high level inputs on the sub. That's just not worth it in my book.

You can always use stereo arc with subwoofer management. You can also decide to buil your own left/right room correction filters e.g. using REW as @slartibartfast has just demonstrated. You can decide to not use room correction at all and just set GEQ filters to your liking. There are many ways to go ahead. From my point of view they are all superior to using high level sub inputs. The WiiM Amp and WiiM Amp Pro don't have line outputs, so attaching a sub this way isn't even possible.

There's no sensible reason to give up the best feature regarding sub integration (the high pass and low pass filtering) just because WiiM's automatic RC currently does not support independent left/right RC and sub out at the same time.

I originally thought you were suggesting to temporarily connect the sub in a different way, run left/right RC and then connect the sub again as before. That won't work, thus my former response.

I merely suggest possibilities of using R/L RC with Subs to overcome todays limitations.
As mentioned, I use the Preamp output for the Subs.
R/L RC is great and worth it as long you are willing to do a couple of measurements and listenings yourself…

 

[MCG555]

I briefly tested the LR vs. stereo comparison earlier today, but to my ears, the results didn’t differ significantly. Interestingly, the graph for the left channel was quite different from the right one. Perhaps my hearing isn’t sharp enough for this hobby anymore. Does anyone else find the results to be very similar and difficult to distinguish?

After extensive comparisons I find the soundscape of the R/L RC clearly more spacious, wider and with better instrument separation.

 

[EddNog]

I briefly tested the LR vs. stereo comparison earlier today, but to my ears, the results didn’t differ significantly. Interestingly, the graph for the left channel was quite different from the right one. Perhaps my hearing isn’t sharp enough for this hobby anymore. Does anyone else find the results to be very similar and difficult to distinguish?

Regarding the beta multiple test option: should we use it or not? What is beta about it?

It depends on how symmetrical your listening space is. With 4- and 6-year-old boys in my house and a constant, ever-evolving living environment, my system is set up in a highly asymmetrical placement (back half of our family room, sideways) because it is one of the least disturbed (by my kids’) spaces in the house, as well as being where my home office is (I work from home three days a week). This is also why I haven’t spent (wasted) the money and time on room treatments yet, because they make no sense unless I were planning to keep my system in this room for the long run (which I’m not—once these two kids are old enough not to risk trashing my equipment, the whole system will move to the formal living room).

Easily adjustable electronic adjustments like room correction are the best and easiest way to deal with ever-changing listening space conditions.

-Ed

 

[AlanB]

After extensive comparisons I find the soundscape of the R/L RC clearly more spacious, wider and with better instrument separation.

Likewise. R&L RC provides subtle but noticeable improvements in soundstage and instrument separation.

 

[landco]

A year later, as I have been watching WiiM updates, the developers have not made a normal room correction, some important functions are still missing. In fact, we can say that this functionality is more like marketing

 

[EddNog]

A year later, as I have been watching WiiM updates, the developers have not made a normal room correction, some important functions are still missing. In fact, we can say that this functionality is more like marketing

Could you please clarify for the audience by providing examples of missing functions/features? Many of us do not have experience with any other room correction systems.

-Ed

 

[landco]

Could you please clarify for the audience by providing examples of missing functions/features? Many of us do not have experience with any other room correction systems.

-Ed

It is impossible to use external microphone calibration, it is impossible to separately equalize the left/right channels with a subwoofer, it is impossible to export measurement results directly to the program, only manually

 

[EddNog]

It is impossible to use external microphone calibration, it is impossible to separately equalize the left/right channels with a subwoofer, it is impossible to export measurement results directly to the program, only manually

You’re right on the last two points, but you’re wrong on the first. I use a UMIK-1 for my WiiM room correction. That being said, they currently do not accept calibration files for the external mics.

-Ed

 

[landco]

I advise to use your laptop as a sound processor. Install an AirPlay emulator (shairport4w) and turn your laptop into a wireless streaming center. Install Cavern QuickEQ with EAPO and get access to full FREEWARE correction. For reasons that are stated in the documentation for the program, you will understand that not a single receiver can compare in quality of correction with a separate PC.

 

[harkpabst]

I don't want to have to rely a computer when playing music through my streamer, CD transport or turntable. Thank you, but no, thank you.

 

[landco]

I don't want to have to rely a computer

However, you rely on WiiM correction, which is much worse than a computer, hee hee hee

 

[harkpabst]

However, you rely on WiiM correction, which is much worse than a computer, hee hee hee

Technically speaking that's a response. It's not a meaningful answer, is it? It's comparing apples to bananas, best case.

 

[EddNog]

However, you rely on WiiM correction, which is much worse than a computer, hee hee hee

This is a WiiM support forum, you're here recommending to use another device entirely.

Not sure if joking, and not sure if funny.

-Ed

 

[landco]

I think it’s useful to remind you that the WiiM’s room correction function is a crutch for a disabled person, not a rocket
Elvis has left the building, you can close this topic

 

[Burnside]

This is a WiiM support forum, you're here recommending to use another device entirely.

Not sure if joking, and not sure if funny.

-Ed

Those of us who have been here a while are used to certain people popping up from time to time to make disparaging remarks only to slink away again. Best ignored

 

[slartibartfast]

I don't want to have to rely a computer when playing music through my streamer, CD transport or turntable. Thank you, but no, thank you.

DFTT