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WiiM Ultra

Joffy1780 said:
I ran some measurements earlier to see the effects of Wiim's automated room correction. Wiim are about to start beta testing room correction which corrects both channels independently, so the results should be even better when they do, hopefully.
The results are from two separate 'correction' sessions - the first using the mics in an Oppo Find X5 Pro and an iPhone 14 and the second using a Umik-1 (sans calibration file) connected to my Oppo phone. In the first session I limited the correction to between 45-4kHz for Android and between 45-2kHz for iOS. The second session with the Umik-1 was limited to 20-700hz. In both session I limited max boost to 6dB and left max Q set at 10.
I'll let you all decide for yourselves whether you think it is effective.

Second session results below - room correction using UMIK-1 connected to Oppo Find X5 Pro.

Left channel:

View attachment 391914

Purple trace is uncorrected, green is corrected to B+K curve and orange is corrected to 'flat'.

Right Channel:

View attachment 391915
Purple trace is uncorrected, green is corrected to B+K and orange is flat.

Left and Right:

View attachment 391916
Purple trace is uncorrected, green is corrected to B+K and orange corrected to flat.

First session (Phone mic).

Left channel:

View attachment 391917

Purple is uncorrected, green is corrected to flat using Oppo internal microphone and orange is corrected to flat using iPhone 14 internal Mic.

Right channel:

View attachment 391918


Purple is uncorrected, green is corrected to flat using Oppo internal microphone and orange is corrected to flat using iPhone 14 internal Mic.

Left and Right:

View attachment 391919

Purple is uncorrected, green is corrected to flat using Oppo internal microphone and orange is corrected to flat using iPhone 14 internal Mic.

System chain - Laptop running REW connected to Wiim Pro via HDMI>Optical extractor. Wiim Pro is connected to SMSL DO100 via optical, which feeds an Audiophonics MPA-S125NC via RCA (driving a pair of KEF Q4) and a BK Double Gem subwoofer via XLR>RCA cable. There is no bass management in play, other than the low pass filter on the BK sub.
Can share .mdat files if anyone is interested.

Hope this helps anyone wondering whether the Wiim room correction is just a throw away gimmick or an effective tool.
Click to expand...
Really useful data @Joffy1780 ! I did a similar experiment in my system and I got similar results. It took me a couple of tries to get the parameters right in the WiiM app but, at the end, the measurements in REW confirmed that WiiM RC was doing what it was supposed to do.

I guess you are aware but I would not correct to such high frequencies. I would focus on room modes from 45 to maybe 200-300 Hz. Above that, I would rather use anechoic measurements for your speakers if available.

Currently, I am using 7 PEQ filters in WiiM to adjust frequency response above above 300Hz based on measurement in Spinorama and 3 PEQ filters to correct for room modes in the lower frequencies using REW instead of WiiM for room correction.
 
Emiyanez said:
Really useful data @Joffy1780 ! I did a similar experiment in my system and I got similar results. It took me a couple of tries to get the parameters right in the WiiM app but, at the end, the measurements in REW confirmed that WiiM RC was doing what it was supposed to do.

I guess you are aware but I would not correct to such high frequencies. I would focus on room modes from 45 to maybe 200-300 Hz. Above that, I would rather use anechoic measurements for your speakers if available.

Currently, I am using 7 PEQ filters in WiiM to adjust frequency response above above 300Hz based on measurement in Spinorama and 3 PEQ filters to correct for room modes in the lower frequencies using REW instead of WiiM for room correction.
Click to expand...
Thank you. I'm using the the B and K corrected filters at the minute, and that was limited to 700Hz.
The independent channel EQ is already in beta (I'm a bit late and have just requested the firmware) so I'll be running it again once I get that.
I feel it has definitely improved the bass, though, which is what most people are after.
 
Is it possible to have room correction and normal equalizer at the same time?
 
ehabheikal said:
Is it possible to have room correction and normal equalizer at the same time?
Click to expand...
No, but note that you can play around all you want with the RC settings. As long as you don't save the new settings over the existing file name setting, you'll be able to return to the original setting. I've actually setup up a couple of different RC profiles ("drapes open" vs "drapes closed" vs "sibilant recording", etc.) that allows me to quickly change the EQ profile based on the situation at hand.
 
ehabheikal said:
Is it possible to have room correction and normal equalizer at the same time?
Click to expand...
Not at the moment. If @WiiM Team allowed to select the number of PEQ filters used in RC, one could use the rest of the filters available for other corrections (e.g. adjustments in the higher frequencies).

This is why I am using REW for RC at the moment. I can correct for room modes selecting the number of PEQ filters I would like to use in REW, leaving the rest of the filters for frequency adjustments based on anechoic measurements.

If I am not mistaken, there were also plans to give the possibility of combining PEQ with standard graphic EQ presets in the WiiM App. This could be useful if one corrects for the room and tweaks the speakers but want to apply a "loudness-like" automatic filter to listen at low levels at night.
 
Just got my Ultra and using Mini optical in for AirPlay. Very happy with this set up for my office very near field listening.

Not sure if upgrading the Kali LP UNFs to Neumann KH80 or Genelec 8030/8020 will make much of a difference. I am using a REL TZeroIII subwoofer with this set up.

Any thoughts?


IMG_5632.jpeg
 
Emiyanez said:
Not at the moment. If @WiiM Team allowed to select the number of PEQ filters used in RC, one could use the rest of the filters available for other corrections (e.g. adjustments in the higher frequencies).

This is why I am using REW for RC at the moment. I can correct for room modes selecting the number of PEQ filters I would like to use in REW, leaving the rest of the filters for frequency adjustments based on anechoic measurements.

If I am not mistaken, there were also plans to give the possibility of combining PEQ with standard graphic EQ presets in the WiiM App. This could be useful if one corrects for the room and tweaks the speakers but want to apply a "loudness-like" automatic filter to listen at low levels at night.
Click to expand...
How do you set number of peq in rew?
 
REW creates the number of filers it believes you need to most closely match your target curve .
Keith
 
ehabheikal said:
How do you set number of peq in rew?
Click to expand...
The best you can do is using the "Equaliser selection" menu at the top right corner of the EQ screen in REW. In "Manufacturer" you should select "Generic" and in "Model" you should select "Configurable PEQ". In the resulting menu, you can adjust the parameters to match those of the WiiM PEQ menu, so the output of the EQ in REW will match perfectly the fields in the WiiM App. You can also limit the number of filters available. More info here.
 
Emiyanez said:
The best you can do is using the "Equaliser selection" menu at the top right corner of the EQ screen in REW. In "Manufacturer" you should select "Generic" and in "Model" you should select "Configurable PEQ". In the resulting menu, you can adjust the parameters to match those of the WiiM PEQ menu, so the output of the EQ in REW will match perfectly the fields in the WiiM App. You can also limit the number of filters available. More info here.
Click to expand...
That is great thankyou
 
Emiyanez said:
The best you can do is using the "Equaliser selection" menu at the top right corner of the EQ screen in REW. In "Manufacturer" you should select "Generic" and in "Model" you should select "Configurable PEQ". In the resulting menu, you can adjust the parameters to match those of the WiiM PEQ menu, so the output of the EQ in REW will match perfectly the fields in the WiiM App. You can also limit the number of filters available. More info here.
Click to expand...
I'd not spotted that option before, maybe it's new.

Is the Q/BW format known for the Wiim?
 
Has anyone had any problems with the 10M/100 Mbps LAN port ?

I’m curious why they didn’t use a 1000Mbps port instead or is 100 Mbps enough ?
 
Mp0wer said:
I’m curious why they didn’t use a 1000Mbps port instead or is 100 Mbps enough ?
Click to expand...
Way more than enough. 24-bit/192 kHz = 24 bits * 192kHz * 2 channels = 9216 kbps = 9.216 mbps.

So 10 Mbps would work for even the highest definition. And since the odds are very close to zero that your WiiM will negotiate 10Mbps with your ethernet switch (unless it is 20+ years old now), you will still have close to 90 Mbps left over.
 
staticV3 said:
No audio data that you could stream to the Ultra could even come close to saturating a 100Mbps connection, making 1000Mbps entirely pointless.
Click to expand...
Totally true.

What's maddening is that 100 Mbps ports are also still standard for streaming televisions, which play back streams with far more demanding bandwidth. I can swamp 100 Mbps with locally stored 1-1 4K blu-ray rips streaming to Plex. It's ridiculous that WiFi can best the wired networking ports on a lot of modern devices, it's as bad as Apple dragging their heels on the Lightning connector with crummy USB 2.0 speeds.

I wish manufacturers would just spring for the slightly pricier networking chipsets. Screw 100 Mbps.
 
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