Room correction

[Horsey]

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

In my sensitive full range tube amp monoblock system, the best results have come from the L/R multiple sweep test.

Three times is the charm. YMMV

 

[wunderkind]

I ran 3 times as well. The first two had similar curves. But the 3rd go was quite different from the two. I'm using an Audessey mic at listening location. It was not moved at all.

Not sure if it takes into account of the sub that is connected via line-out from my Cambridge Audio amp. I don't think it does as it is flat for low frequencies. I felt the sound is more forward and smaller sound stage. It's different from what I was used to. Not necessarily worse. Just different.
Jury is out for me whether I like RC or not.

This is with Wiim Pro.

 

[Wiimer]

I ran 3 times as well. The first two had similar curves. But the 3rd go was quite different from the two. I'm using an Audessey mic at listening location. It was not moved at all.

Did you run RC 3 times in a row?

It is possible that the error occurred on the third measurement. Restarting the WiiM app after each measurement may resolve the issue .

 

[slartibartfast]

Did you run RC 3 times in a row?

It is possible that the error occurred on the third measurement. Restarting the WiiM app after each measurement may resolve the issue .

I think he means the multiple measurement option which averages three measurements. I am surprised that makes any difference at all since if I make repeated measurements with a UMIK-1 in REW the results are pretty much indistinguishable. WiiM should be allowing movement of the mic between sweeps but inexplicably they aren't.

Edit. @Horsey was talking about the multiple measurement option but it appears @wunderkind has misunderstood that as his reply mentions being able to view the results of three different sweeps and that isn't possible when using the multiple measurement option.

 

[wunderkind]

Thanks for your responses. I ran 3 times and saved 3 profiles. 2 of them are similar. 3rd run resulted in a different graph despite no change to physical configuration.

Were you referring to running 3 times without saving the profile but saved at the final run?

 

[slartibartfast]

Thanks for your responses. I ran 3 times and saved 3 profiles. 2 of them are similar. 3rd run resulted in a different graph despite no change to physical configuration.

Were you referring to running 3 times without saving the profile but saved at the final run?

There is a new option to average multiple sweep results. It plays three sweeps five seconds apart and averages the results. There is a check box in room correction settings to select it.

 

[Smartplug]

I think he means the multiple measurement option which averages three measurements. I am surprised that makes any difference at all since if I make repeated measurements with a UMIK-1 in REW the results are pretty much indistinguishable. WiiM should be allowing movement of the mic between sweeps but inexplicably they aren't.

Edit. @Horsey was talking about the multiple measurement option but it appears @wunderkind has misunderstood that as his reply mentions being able to view the results of three different sweeps and that isn't possible when using the multiple measurement option.

Users get confused on 3 sweeps and 3 run. Too much horsey!

 

[MCG555]

There is a new option to average multiple sweep results. It plays three sweeps five seconds apart and averages the results. There is a check box in room correction settings to select it.

… there is no checkbox on Wiim Pro+

 

[harkpabst]

… there is no checkbox on Wiim Pro+

What's your WiiM Home app version?

 

[wunderkind]

Can't say I saw the 3 sweeps option in the app. It was my first time playing with it. I'll try again next time.

thanks!

 

[EddNog]

Can't say I saw the 3 sweeps option in the app. It was my first time playing with it. I'll try again next time.

thanks!

Look for this:



-Ed

 

[Horsey]

I think he means the multiple measurement option which averages three measurements. I am surprised that makes any difference at all since if I make repeated measurements with a UMIK-1 in REW the results are pretty much indistinguishable. WiiM should be allowing movement of the mic between sweeps but inexplicably they aren't.

Edit. @Horsey was talking about the multiple measurement option but it appears @wunderkind has misunderstood that as his reply mentions being able to view the results of three different sweeps and that isn't possible when using the multiple measurement option.

You are correct. Under the BK-Harman-Flat options which are on the wheel when you launch Room Correction on the top right are a number of options. Multi-measurements (Beta). See EddnNog's photo above from inside the Room Correction wheel link.

I turned this on and then ran the Room Correction using my external Shure microphone connected an iPad. The tests ran three consecutive times for each channel. Of all the measurements I used, this one is the most balanced around the curve and sounds great.

 

[EddNog]

You are correct. Under the BK-Harman-Flat options which are on the wheel when you launch Room Correction on the top right are a number of options. Multi-measurements (Beta). See EddnNog's photo above from inside the Room Correction wheel link.

I turned this on and then ran the Room Correction using my external Shure microphone connected an iPad. The tests ran three consecutive times for each channel. Of all the measurements I used, this one is the most balanced around the curve and sounds great.

Agreed, the triple-pass is much more accurate than the previous single-pass method, and even more so when using a more accurate external mic (in my case UMIK-1).

Now if only I can get Left/Right with Sub, it will be true bliss for me. In the meantime I make due with, “stereo,” correction since I need the bass management functionality more than I need Left/Right separate correction.

-Ed

 

[MCG555]

What's your WiiM Home app version?

Ahh Voila!
There is a new version! Thank you!

 

[Paffi]

Agreed, the triple-pass is much more accurate than the previous single-pass method, and even more so when using a more accurate external mic (in my case UMIK-1).

Now if only I can get Left/Right with Sub, it will be true bliss for me. In the meantime I make due with, “stereo,” correction since I need the bass management functionality more than I need Left/Right separate correction.

-Ed

You could try the following: use roomcorrection including sub. If your sub may already be somehow corrected (dps in the sub itself or minidsp), maybe only 1 filter for the sub region occurs. IF that is the case, make room correction without sub (L+R separate), save the resulting values and then switch back to "with sub" and manually enter the EQ-Values of the separate measurements ABOVE the crossover and manually enter the eq values BELOW crossover. Maybe you´re lucky and the 10 EQs are enough, otherwise replace one of the not so important filters.

 

[EddNog]

You could try the following: use roomcorrection including sub. If your sub may already be somehow corrected (dps in the sub itself or minidsp), maybe only 1 filter for the sub region occurs. IF that is the case, make room correction without sub (L+R separate), save the resulting values and then switch back to "with sub" and manually enter the EQ-Values of the separate measurements ABOVE the crossover and manually enter the eq values BELOW crossover. Maybe you´re lucky and the 10 EQs are enough, otherwise replace one of the not so important filters.

I did this in the past, but if you look at a 4th-order crossover curve, you’ll see the crossover point hardly covers the large blended range. This means that technique is not sufficient to accurately do the job. Here’s an example at 80Hz:


Oh and yes, I do use a separate room correction for the sub itself, a DSPeaker Anti-Mode 8033 Cinema. It is magic in a little black box!

-Ed

 

[Paffi]

I did this in the past, but if you look at a 4th-order crossover curve, you’ll see the crossover point hardly covers the large blended range. This means that technique is not sufficient to accurately do the job. Here’s an example at 80Hz:
View attachment 15886

Oh and yes, I do use a separate room correction for the sub itself, a DSPeaker Anti-Mode 8033 Cinema. It is magic in a little black box!

-Ed

Yes, you can indeed have this issue. But maybe the correction the wiim sets is very low (e.g. 30hz), so this issue may be avoid (not beeing in the crossover blending). It's just a workaround to test, of course the "regular way" would be better.

 

[MCG555]

I did this in the past, but if you look at a 4th-order crossover curve, you’ll see the crossover point hardly covers the large blended range. This means that technique is not sufficient to accurately do the job. Here’s an example at 80Hz:
View attachment 15886

Oh and yes, I do use a separate room correction for the sub itself, a DSPeaker Anti-Mode 8033 Cinema. It is magic in a little black box!

-Ed

I do not know what you mean.
Either way, you seem to have found a solution anyway.

 

[Smartplug]

Agreed, the triple-pass is much more accurate than the previous single-pass method, and even more so when using a more accurate external mic (in my case UMIK-1).

Now if only I can get Left/Right with Sub, it will be true bliss for me. In the meantime I make due with, “stereo,” correction since I need the bass management functionality more than I need Left/Right separate correction.

-Ed

Triple pass has improvement over single pass before. Rc is becoming mature to a point it may even compare to gold standard Dirac. Wiim is not done tweaking rc they have more feature to add soon.

 

[Smartplug]

I did this in the past, but if you look at a 4th-order crossover curve, you’ll see the crossover point hardly covers the large blended range. This means that technique is not sufficient to accurately do the job. Here’s an example at 80Hz:
View attachment 15886

Oh and yes, I do use a separate room correction for the sub itself, a DSPeaker Anti-Mode 8033 Cinema. It is magic in a little black box!

-Ed

It would be great if they they give us a choice like the one from mini dsp. Butterworth, linkwitz Riley and few others with a graph that shows the slope.