Rattling subwoofer

[Wiimer]

@eetee85,

My suggestion is to connect the Ultra's Line-out terminal to the Dali sub's Line-in terminal using an RCA cable and perform the same test.

When doing this test, keep the following in mind:
Please confirm beforehand that the Ultra's "Line-out level" is set to 2Vrms.
Turn off Subwoofer in the WiiM app.
Set the Dali crossover knob to its maximum value.


If no sound comes from the sub or if there is noise even when using the Line-out, it is highly likely that the sub is malfunctioning.

Also, could you please play this test track and post a video?

110Hz > 30Hz Step Tones

(Available on YouTube, Amazon Music, and Spotify)

The volume is loud, so please play it at a low volume at first.


If sound is heard normally via the Line-out, next connect the Ultra's Line-Out and the Dali Subwoofer-in using a single RCA cable and perform the same test. This will check if there is an issue with the Dali subwoofer-in port. (Although it is unlikely because it has already been tested at Yamaha.)

 

[eetee85]

It does not work like it should as I listened to the video's the OP made on both the Yamaha and the WiiM, the indeed rattling is just louder on the Yamaha and excites the subwoofer more, maybe the Yamaha has it's sub output gain cranked up. The OP did already say that another subwoofer works on the WiiM. I maintain the position that the Dali sub is defective.

Here's another video, this time the Dali sub line-in connected to the Wiim's line-out. Wiim main vol. Is 50, sub. vol. is 50% at 12oclock position.
Sounds as it should. Crossover reacts.
Later in the video I open the sub. crossover potmeter to hear the rumble.

I hope this will dispel any doubts about whether the DALI SUB is functioning properly.

Edit: forgot to add the actual video. (Phone couldn't record the actual sound of the sub, but I hope this video will proves my point without a doubt)
View attachment 1000011344.mp4

 

[slartibartfast]

Here's another video, this time the Dali sub line-in connected to the Wiim's line-out. Wiim main vol. Is 50, sub. vol. is 50% at 12oclock position.
Sounds as it should. Crossover reacts.
Later in the video I open the sub. crossover potmeter to hear the rumble.
View attachment 31142
I hope this will dispel any doubts about whether the DALI SIB is functioning properly.

Video?

 

[eetee85]

@eetee85,

My suggestion is to connect the Ultra's Line-out terminal to the Dali sub's Line-in terminal using an RCA cable and perform the same test.

When doing this test, keep the following in mind:
Please confirm beforehand that the Ultra's "Line-out level" is set to 2Vrms.
Turn off Subwoofer in the WiiM app.
Set the Dali crossover knob to its maximum value.


If no sound comes from the sub or if there is noise even when using the Line-out, it is highly likely that the sub is malfunctioning.

Also, could you please play this test track and post a video?

110Hz > 30Hz Step Tones
View attachment 31135
(Available on YouTube, Amazon Music, and Spotify)

The volume is loud, so please play it at a low volume at first.


If sound is heard normally via the Line-out, next connect the Ultra's Line-Out and the Dali Subwoofer-in using a single RCA cable and perform the same test. This will check if there is an issue with the Dali subwoofer-in port. (Although it is unlikely because it has already been tested at Yamaha.)

Hi!
View attachment 1000011346.mp4
Thanks for the support again, please find the
1st video Wiim line-out Dali line on recording with the test, I also included pictures of the settings being used:
Dali back panel during the 1st test:
line out settingswiim vol level:
2nd video, wiim line-out (same settings as test01) to Dali sub-in (only the right channel):

View attachment 1000011353.mp4
Dali settings during the 2nd test:
Sorry for the weird resonant noises, room is not soundproofed at all.

What should I do next?
Again, thanks for your effort and support!

 

[eetee85]

Video?

Just added, thanks for the notice!

 

[Wiimer]

Hi!
View attachment 31144
Thanks for the support again, please find the
1st video Wiim line-out Dali line on recording with the test, I also included pictures of the settings being used:
Dali back panel during the 1st test:
View attachment 31145line out settingsView attachment 31146wiim vol level:View attachment 31147
2nd video, wiim line-out (same settings as test01) to Dali sub-in (only the right channel):

View attachment 31149
Dali settings during the 2nd test:View attachment 31150
Sorry for the weird resonant noises, room is not soundproofed at all.

What should I do next?
Again, thanks for your effort and support!

Thank you.

In either case, is the bass outputting correctly from the Dali sub? (It sounded that way to me.)

If so, could you please connect the Ultra's Sub-out and the Dali's Line-in (Left) using a single RCA cable and perform the same test?
(If you have an RCA Y-cable, connecting that is also fine.)

※ Please ensure the subwoofer toggle is turned on in the WiiM app during this test.

 

[Wiimer]

@eetee85

If you continue to experience issues with the line-in connection from Ultra's Sub-Out to Dali, please try performing a factory reset on Ultra.

If the problem persists, I recommend submitting a ticket via the feedback section in the WiiM app. (Since device logs will be sent, please reproduce the issue beforehand.)

 

[slartibartfast]

Just added, thanks for the notice!

Are you using Google Cast to the Ultra? There is a new firmware with a fix for subwoofer output with Google Cast.

 

[eetee85]

Thank you.

In either case, is the bass outputting correctly from the Dali sub? (It sounded that way to me.)

If so, could you please connect the Ultra's Sub-out and the Dali's Line-in (Left) using a single RCA cable and perform the same test?
(If you have an RCA Y-cable, connecting that is also fine.)

※ Please ensure the subwoofer toggle is turned on in the WiiM app during this test.

Yes, the dali sub sounded right during both tests (as far as I can tell there were no rattling noises)

Here's the requested 3rd recording between Wiim Ultra's sub output and Dali line-input left channel (dont have Y rca)

View attachment 1000011389.mp4
Dali back panel settings:

Wiim sub settings:


As an extra I did a wiim sub out -- dali sub in test too with the step stone test, but I had to max out dali levels to even hear something, hence I couldn't decide whether is rattling or not.

View attachment 1000011397.mp4
Here are the settings:
Dali:

Wiim sub settings:

Can the weak sub-out signal be the culprit of the whole rattling phenomenon?

I will proceed further with a factory reset and with repeated tests

 

[eetee85]

Are you using Google Cast to the Ultra? There is a new firmware with a fix for subwoofer output with Google Cast.

Source is either Ethernet or Hdmi arc from the tv. Music source is Spotify.

 

[Wiimer]

Yes, the dali sub sounded right during both tests (as far as I can tell there were no rattling noises)

Here's the requested 3rd recording between Wiim Ultra's sub output and Dali line-input left channel (dont have Y rca)

View attachment 31167
Dali back panel settings:
View attachment 31168
Wiim sub settings:
View attachment 31169

As an extra I did a wiim sub out -- dali sub in test too with the step stone test, but I had to max out dali levels to even hear something, hence I couldn't decide whether is rattling or not.

View attachment 31170
Here are the settings:
Dali:
View attachment 31171
Wiim sub settings:
View attachment 31172
Can the weak sub-out signal be the culprit of the whole rattling phenomenon?

I will proceed further with a factory reset and with repeated tests

It seems no issues occurred during the third test either.

So, I believe the issue only occurs when connecting the Ultra's Sub-out to the Dali's Sub-in. Is my understanding correct?

In that case, it seems the issue might be with the Dali's Sub-in, but I still don't fully understand the cause..

It might be a compromise, but for now, I think connecting the Ultra's Sub-out to the Dali's Line-in is the best option.

 

[slartibartfast]

Source is either Ethernet or Hdmi arc from the tv. Music source is Spotify.

Maybe the new firmware will help anyway

 

[slartibartfast]

It seems no issues occurred during the third test either.

So, I believe the issue only occurs when connecting the Ultra's Sub-out to the Dali's Sub-in. Is my understanding correct?

In that case, it seems the issue might be with the Dali's Sub-in, but I still don't fully understand the cause..

It might be a compromise, but for now, I think connecting the Ultra's Sub-out to the Dali's Line-in is the best option.

Didn't he try connecting the Yamaha to the Dali sub in and it was fine?

 

[Wiimer]

Didn't he try connecting the Yamaha to the Dali sub in and it was fine?

Yes, but since there are no issues with the Ultra's Sub-out and the Dali's Line-in connection, I thought it's likely that the Ultra's Sub-out is no problem. Could it be that the input sensitivity differs between the Dali's Sub-in and Line-in?
(Honestly, I'm not really sure..)

 

[eetee85]

Didn't he try connecting the Yamaha to the Dali sub in and it was fine?

Yes, the Dali subwoofer sub input works with my old trusty Yamaha amplifier connected to its subwoofer output.

 

[eetee85]

Yes, but since there are no issues with the Ultra's Sub-out and the Dali's Line-in connection, I thought it's likely that the Ultra's Sub-out is no problem. Could it be that the input sensitivity differs between the Dali's Sub-in and Line-in?
(Honestly, I'm not really sure..)

Bought an Y rca divider, connected it to the Wiim sub output and the subwoofer line inputs.
Did a factory reset, tried out the sub out with the initial fw, no improvement.

Installed the latest fw:the
With 0dB and 80hz cross. freq. at wiim, and 12o'clock level and fully open cross. freq. at dali, I couldn't even run a subwoofer synchronisation because the sub didnt produce audible sound. Wiim volume is at 50.

Rerun the 110Hz->30Hz Step Tone test, and I did not hear anything from the sub.

I give up, opened a ticket, I hope they will find the root cause.

 

[eetee85]

Interesting side-note is that the original owner of the ultra (bought it 2nd hand) complained in a Fb group (dedicated group for wiim devices in my country) that he's subwoofer always switched to standby due to the low sub output. Later in the comments he says this is was resolved by wiim support.

Anyways he acted surprised when I mentioned to him that I have issues with my own sub too.