RoomFit is very good - my experience and settings

[Ion65]

I've run RoomFit in two rooms now and it's a clear improvement in sound quality over using Room Correction for me.

I've played with it a bit and since documentation is light on this currently thought it might be useful to post how I have used it.

Here's my setup for ref:

Office: Q Acoustic M20's, Q Acoustic 3060S Sub, WiiM Ultra. Simple signal path here.
Lounge: Q Acoustic Concept 30s, Q Acoustic Q Sub 80, WiiM Ultra, Audiolab 6000A. Vinyl is with a Pro-Ject Debut Evo 2 and Pro-Ject Phono Box S2 Ultra.
VINYL : Pro-Ject Debut EVO 2 (turntable) → Pro-Ject Phono Box S2 Ultra → WiiM Ultra (line in)
STREAMING : Roon/Qobuz → WiiM Ultra
FROM WIIM ULTRA (post RC / bass management)
→ Sub Out → Q Acoustics Q Sub 80
→ RCA Line Out → Audiolab 6000A → Q Acoustics Concept 30

I use the UMIK-1 mic for RoomFit - I think this mic is a very good investment for this.

In the office I connected the UMIK-1 to my Mac via USB-C and in the lounge I connected it to my iPhone 16 Pro via USB-C. I ran the RoomFit on the Mac in the Office and on iPhone in the lounge.

In both rooms I used the same settings for RoomFit:
Target Curve: Harmen
Freq: 20.0 to 4000Hz (to include the sub frequencies because I have subwoofer calibration on)
Max Gain: 10db, Min Gain: -10db
Max Q: 10
Cut-Only mode : off (not sure when I would use this unless there was a particular issue with room resonance to remove?)
External Microphone: UMIK-1 (On the Mac I had to select this in Sound Settings > Input first)
External Mic Calibration : I use the 90Deg file for the Mic (you download this from a code when you buy the mic). This is the one that expects the mic pointing upwards.
Subwoofer Calibration: on
Moving Mic Measurement (beta): off (I may try this in the future though, just trying to understand how you actually use it - seems to be more valuable if you want to fix gaps in the acoustics or optimise for more than one listening position - though I am guessing on that)
Advance Settings : Smoothing: 1/6 Octave (not sure why!)
Multiple Measurements (beta): On (takes 3 readings instead of one which makes sense to me)

Not sure if these are optimised but they have worked well for me in both rooms.

I hold the mic pointing up where my head would be in my listening position and run RoomFit. I made sure the room was nice and quiet through the whole procedure. I chose the option to measure left and right, which in hindsight might mean I should have used the other calibration file for the mic and pointed it at the speaker I was testing - oh well I will need to try that later!

Once run I named the profile appropriately and turned off EQ, so just RoomFit is on. My understanding of EQ vs RoomFit, is that RoomFit adjust for your room acoustics and then you can vary EQ on top of that for different music or input/outputs. For me so far I have just left EQ off, but I could see a situation where I may create an EQ for certain music types for example and have it as a preset.

Anyway hope that is helpful. And if anyone has any suggestions or better explanations I would be happy to hear them.

 

[slartibartfast]

I've run RoomFit in two rooms now and it's a clear improvement in sound quality over using Room Correction for me.

The only difference between RoomFit and Room Correction is the name. Were you using exactly the same settings in both cases?

 

[Ion65]

The only difference between RoomFit and Room Correction is the name. Were you using exactly the same settings in both cases?

Hmm not really - RoomFit has new features and works with EQ in a different way.

 

[slartibartfast]

Hmm not really - RoomFit has new features and works with EQ in a different way.

The new feature is "no cut mode" which you didn't use though. Room Correction probably had improvements since it was first introduced so it depends when you last tried it. The only change regarding Roomfit and EQ is that they can be used simultaneously.

 

[Burnside]

Hmm not really - RoomFit has new features and works with EQ in a different way.

Hmm really

Room correction has improved gradually since it was first released, adding new features as it evolved. As stated here by the forum administrator and WiiM employee: “RoomFit is the new name of Room Correction”

https://forum.wiimhome.com/threads/wiim-amp-ultra-performance-meets-precision.7167/post-126397

 

[pjorgenunes]

I’m not really sure, but WiiM might optimize algorithms and the way the filters are calculated, even with same settings. Not sure but, only WiiM Team can answer this

 

[Burnside]

I’m not really sure, but WiiM might optimize algorithms and the way the filters are calculated, even with same settings. Not sure but, only WiiM Team can answer this

I think there was some evidence of that during the beta where changes were made without changing the app or firmware, suggesting that the algorithm primarily resides on WiiM backend servers and not in the app or WiiM device, so yes backend optimisation might well occur over time.

 

[Ion65]

The new feature is "no cut mode" which you didn't use though. Room Correction probably had improvements since it was first introduced so it depends when you last tried it. The only change regarding Roomfit and EQ is that they can be used simultaneously.

There is a bit more than that, the moving mic, the UI changes, the change in approach for RoomFit vs EQ, but I see your point. Yes in fact I used the same settings with RC and the same mic, and multiple times, but I am much happier with the RoomFit results so it suggests possible changes under the hood too, which would be in line with how WiiM have constantly updated RC algorithms in the past, or failing that it’s psychoacoustic effects

 

[Bernhard]

Today I tried the Moving Microphone Beta option .. and it turned out as game changer for me. I never had such perfect results with such small efforts.

The settings were (I have German GUI. so my translation may be different to the English GUI):
Frequency 20 .. 10000Hz
Max gain +3 dB (more is dangerous if you just have caught a minimum at some place)
Min gain -10dB (needed for the room modes)
Q max 10
Cut-Only mode off (as far as I understand max gain +3dB reaches a similiar result)
no external microphone, iPhone 16Pro only
Subwoofer Calibration off (I have full range 2-way systems)
Smoothing 1/12 octave (as recommended somewhere in the WiiM tutorials)
Moving Mic Measurement (beta) on (which deactivates the multiple measure option)

With this set-up I reached something that I ever thought would be impossible: a full range compensation in my car (!). For the moment it sounds better than my home set-up (for sure only at the driver seat). Tomorrow I will get my new UMIK-1 and will use it at home then for this measurement.

 

[Ion65]

Today I tried the Moving Microphone Beta option .. and it turned out as gane changer for me. I never had such perfect results with such small efforts.

The settings were (I have German GUI. so my translation may be different to the English GUI):
Frequency 20 .. 10000Hz
Max gain +3 dB (more is dangerous if you just have caught a minimum at some place)
Min gain -10dB (needed for the room modes)
Q max 10
Cut-Only mode off (as far as I understand max gain +3dB reaches a similiar result)
no external microphone, iPhone 16Pro only
Subwoofer Calibration off (I have full range 2-way systems)
Smoothing 1/12 octave (as recommended somewhere in the WiiM tutorials)
Moving Mic Measurement (beta) on (which deactivates the multiple measure option)

With this set-up I reached something that I ever thought would be impossible: a full range compensation in my car (!). For the moment it sounds better than my home set-up (for sure only at the driver seat). Tomorrow I will get my new UMIK-1 and will use it at home then for this measurement.

That’s really interesting - thanks! How did you move the mic during testing? Do you just sort of wave it in a figure of 8? Also how have you got this setup in the car?

I am going to to try moving mic and also the settings you have detailed here.

 

[Bernhard]

First of all the MMM process starts with the right smartphone orientation. You must twist its orientation, the bottom microphone must point to the loudspeakers, For this purpose the app itself twists by 180°. Now the GUI is upside-down and you can twist the smartphone and continue the process with that orientation,
The first sweep is the usual low-to-high frequencies run. For this the smartphone should be exactly at the place where you normally are sitting.
After that a white (or pink?) noise starts for one minute. I recommend an ear protection . During this audible noise you move the smartphone randomly around the usual listening area, let's say +/- 20 .. 30cm in all directions.
Finally you get a result that (in my case) looks very different to all former measurings. Frequencies that I never thought of before suddenly are recognized and compensated. In my case even around 5kHz was a strong mode, I assume the many glasses in my car, whatever.
The result is the best I ever had in my car (and I am dealing with this subject for approx. 40 years now ..)

 

[Ion65]

First of all the MMM process starts with the right smartphone orientation. You must twist its orientation, the bottom microphone must point to the loudspeakers, For this purpose the app itself twists by 180°. Now the GUI is upside-down and you can twist the smartphone and continue the process with that orientation,
The first sweep is the usual low-to-high frequencies run. For this the smartphone should be exactly at the place where you normally are sitting.
After that a white (or pink?) noise starts for one minute. I recommend an ear protection . During this audible noise you move the smartphone randomly around the usual listening area, let's say +/- 20 .. 30cm in all directions.
Finally you get a result that (in my case) looks very different to all former measurings. Frequencies that I never thought of before suddenly are recognized and compensated. In my case even around 5kHz was a strong mode, I assume the many glasses in my car, whatever.
The result is the best I ever had in my car (and I am dealing with this subject for approx. 40 years now ..)

That's great - definitely going to give this a go.
But I'm still fascinated how you have a WiiM device and hifi setup in your car? Would you mind explaining that a little?

 

[Bernhard]

I have four WiiM devices, all of them have the same RoomFit options:

WiiM Mini: I use it for Airplay at home, I only use its optical output as it uses a simply DA converter only. I do not use its EQ.

WiiM Pro: I once bought it for the same purpose in my car believing that it would have a better analogue quality. But later I learned that it has the same DA converter as the Mini. So I bought the Wiim Pro Plus for my car, an audible difference when using the analogue outputs.

WiiM Pro Plus: is used now in my car for Airplay (DAB & GPS is running through the original car's sound system) with a 2-channel Eton ampifier plus two middle class 2-way loudspeakers. Yesterday I calibrated it with the MMM option and am extremely satisfied for the moment with the result. The WiiM device can be used in a car without problems, it only needs 5V, any USB connector delivers enough power for it.
Yesterday I wrote about the Wiim Amp Pro by error, I meant this WiiM Pro Plus.

WiiM Amp Pro: is used as main amplifier at home, until now calibrated without the MMM yet. Today I get the UMIK-1 and will run the process then. Let's see.

 

[Ion65]

I have four WiiM devices, all of them have the same RoomFit options:

WiiM Mini: I use it for Airplay at home, I only use its optical output as it uses a simply DA converter only. I do not use its EQ.

WiiM Pro: I once bought it for the same purpose in my car believing that it would have a better analogue quality. But later I learned that it has the same DA converter as the Mini. So I bought the Wiim Pro Plus for my car, an audible difference when using the analogue outputs.

WiiM Pro Plus: is used now in my car for Airplay (DAB & GPS is running through the original car's sound system) with a 2-channel Eton ampifier plus two middle class 2-way loudspeakers. Yesterday I calibrated it with the MMM option and am extremely satisfied for the moment with the result. The WiiM device can be used in a car without problems, it only needs 5V, any USB connector delivers enough power for it.
Yesterday I wrote about the Wiim Amp Pro by error, I meant this WiiM Pro Plus.

WiiM Amp Pro: is used as main amplifier at home, until now calibrated without the MMM yet. Today I get the UMIK-1 and will run the process then. Let's see.

I didn’t realise the pro plus can run on 5v usb: and with AirPlay I see how convenient that could be in the car - what a cool idea! It’s a great case for RoomFit with MMM.too, as you say.

 

[Bernhard]

I couldn't wait for the UMIK-1 to finally arrive. Today, I took my iPhone and performed a RoomFit calibration at home using the MMM option. I stupidly forgot to take off the iPhone case. I know that such small volumina in the case's slots can affect the sound. So the result is certainly not perfect, but despite this error, it's significantly better than all previous calibrations.

Let's see what's possible once the UMIK-1 arrives.

 

[Ion65]

Very nice - UMIK-1 is a quality piece of kit so hopefully should see improvements.

 

[EddNog]

Seems like a very nice upgrade to RoomFit; would be similar to the benefits DIRAC gets from its multiple location sweeps.

-Ed

 

[Jls]

I’ve been reading about all this, but just got the Amp yesterday. I’ve tried Room Fit with and without moving mic. I much prefer moving mic. It tamed what sounded like an echo in my rather large and high ceiling room.

And tamed a Boominess at around 60 Hz.

Fixed a dip above the tweeter crossover.

 

[pjorgenunes]

I’ve been reading about all this, but just got the Amp yesterday. I’ve tried Room Fit with and without moving mic. I much prefer moving mic. It tamed what sounded like an echo in my rather large and high ceiling room.

And tamed a Boominess at around 60 Hz.

Fixed a dip above the tweeter crossover.

What settings did you use?

 

[Jls]

What settings did you use?

Default settings plus moving mic.