Enable Subwoofer control (knob) or increase subwoofer gain

[brucemiranda]

All the basic information is available in this toolkit to enable the hidden subwoofer menu in the Audi cars that have the Audi Sound System. e.g. B9 A4/A5 Q5 MKII A3 etc. and other brands:
https://github.com/NumberOneBot/mqb-mib2-sound-datasets
NEW: https://mqb-blog.com/en/2023/04/17/sound-settings-editor/
https://mqb-blog.com/en/2022/02/21/sound-dataset/
Thanks to @NumberOneBot for his research into the datasets!

Requirements:

This should now work for Audi, VW, Skoda and Seat as longs as certain criteria are met - based on coding:

• no external sound system (amp)
• internal sound system with subwoofer

No static datasets will be applied.
A custom dataset is created based on the dataset originally on unit.
Before patching a backup of the original dataset is saved to /backup/ folder and can be restored.

Two functions:

1. Enable Subwoofer Knob

• Also set EQ dials on brand base:
  • AUDI: trebble/bass
  • VW/Skoda: trebble/middle/bass
  • SEAT: trebble/midtrebble/middle/midbass/bass

2. Fixed gain increase for subwoofer

• For all with not working subwoofer knob due ti missing implementation in GUI
• For all who want a fixed increase

Please MIND:
CRC calculation of the very long 0x3000 dataset will take about 2 Minutes!

_Please share pictures of the changes to the GUI
And report back on function!

GEM Screens:

Please share your LOG files in case of issues, but also if all is working fine :)_

External test result:

Not working - Nvidea/MHI2 MLB:

• A4 B9 NVIDIA -MHI2 ER P3241 MU0678
• A5 F5 NVIDIA -MHI2 ER P3241 MU0678
• A4/A5/Q5/Q7 NVIDIA -MHI2 ER S2148 MU0042
• A4/A5/Q5/Q7 NVIDIA -MHI2 ER K3344 MU1438
• A4/A5/Q5/Q7 NVIDIA -MHI2 ER K3346 MU1438
• A4/A5/Q5/Q7 NVIDIA -MHI2 ER K2161 MU1421
• A4/A5/Q5/Q7 NVIDIA -MHI2 ER K2156 MU0976
• A4/A5/Q5/Q7 NVIDIA -MHI2 ER K2140 MU0358

Working - All MQB + Qualcom MHI2Q MLB:

• A4/A5/Q5/Q7 Qualcom MHI2Q ER P3638 MU 0916/0917
• A4/A5/Q5/Q7 Qualcom MHI2Q ER P5092 MU 1329
• A3/Q2 all train and sw working

Test results from this discussion:

• A3:
  • Working:
    • @TheVaan A3 8VA (Facelift) with Audi Sound System. Produces in week 21 in 2017 (model year 2018).
      • Subwwofer knob
      • fixed gain increase

FW: MHI2_ER_AU37x_P4159 |

• A4:
  • Not Working:
    • @Silintone: Audi A4 B9 (8W0) | MHI2_ER_AUG22_K2161 MU1421 | Dataset Version: 8W0909545E
    • @yalmac: Audi A4 B9 | MHI2_ER_AUG22_K2161 MU1421 | Dataset Version: 8W0909545E
  • Working:
    • @Leor2208 MHI2Q_ER_AUG22_P5092 MU1329

Observation:

• It looks like the subwoofer setting is not fully stored in unit. The knob stays at the configured position - graphically. However, after switching the unit off/on as change of source the subwoofer is back to normal and one has to go back to the menu to re enable the adjustment.

Menu after enabling subwoofer control (A3):

Test SUBWOOFER:

Get these files:
https://www.demolandia.net/speaker-test/tones/page-1.html

[Mr-MIBonk]

Thank's a lot! I will build it in next days and tehn we can do more tests :-)

[Silintone]

Im sorry but is there a txt file that shows a step guide , im not sure where to begin on this , what do i need so on . i have a MIB2 unit with VC and nav ( 2016 databases :( )

[harman-f]

@brucemiranda

I checked a few M.I.B backups and I could find that coding in quite a lot of them.

Could it be more generic?
Like all Audi cars with Sound System?

[harman-f]

Im sorry but is there a txt file that shows a step guide , im not sure where to begin on this , what do i need so on . i have a MIB2 unit with VC and nav ( 2016 databases :( )

Wait, there will be a function in M.I.B in the near future ;)

[brucemiranda]

@brucemiranda

I checked a few M.I.B backups and I could find that coding in quite a lot of them.

Could it be more generic? Like all Audi cars with Sound System?

It could well be more generic but I didn't know how much. I know my solution works on A3/A4/A5/Q5 MKII.
I think it's quite safe to assume that any car that has the address like I showed can be replaced with the new values given. The last 2 bytes are the checksum. So that would confirm that you are only updating cars that have exactly that value at that particular memory space.
Ofcourse if you wanted to, you can always add a check if the car has the value '30' in byte 1 of the Module 5F at address 0x3000. That confirms the car has the Audi Sound System, which includes the Centre speaker and the Subwoofer.
I haven't seen what a car that just has the Base Stereo has at address 0x3B00 in Module.5F. I just know that the field is blank if the car has B&O because in that case the parameters are stored in the B&O amp module rather than the 5F MIB2.

[harman-f]

We will compare the whole string included crc before replacing it.
Similar to the function for CANTON.

@Mr-MIBonk will look into an implementation in the near future. We will update you here (and ask you to run some tests )

[Silintone]

Hi Harman_f / Bruce .
i have the A.S.S , with center and sub , once you have your package compiled i can be a test subject as , i need to update everything as well as after the sub control, i do have a spare memory card available for this , let me know how i can help ( ps ill need a few "rookie how to steps" on how to do the test or checks
Thanks , Wayne

[Silintone]

I managed to come right with installing the MIB, ive enabled vim .
The posted how to vid helped alot , ill upload my backup soon, just need to figure out what software to use to read and edit the sound option to be able to get to the 5f module Bruce mentioned.

• Additionally how or where to get the fec files to update maps, based in south Africa so my maps will like be different to whats available on github i'm guessing.

[brucemiranda]

Thats my point. You won't need any additional software for my method. 5F is the MIB2's address and so any script in M.I.B. is already running on 5F. You just need to point at the right memory space, check if the subwoofer control is hidden and if so replace that memory space with the value that enables the subwoofer control. It doesn't get any easier than this. I only provided this method to help this project since it's Free and unless people contribute to it, it won't progress.

[Silintone]

No problem , ill go dig some more in it now , Let me know how i can contribute , now that i figured out how to get it on the car.
More then willing to help :) let me know here or via email.
PS thanks for the help thus far .

[harman-f]

I will start to through some script together, as soon as something can be testet I will come back to you

[Silintone]

Had a look , dont seem to be finding the option for the sub control( unsure of the menu path to follow ( apologies only had this software working for less then 2 hours)

Where can i upload my original backup before editing anything ? Please send the link to the upload page , not sure if that will come in usefull

[harman-f]

@brucemiranda
To be sure here, external amp is what we do NOT want to see in coding in this situation, right?
Byte 11 should be 1

[harman-f]

@brucemiranda
@Silintone

this one was quick and dirty, no guarantee, that it will work - it might just do ;)
96be10e
You have to download latest M.I.B from repo! Not one of the release versions.

If you find any issues, please post M.I.B LOG as well

[Silintone]

@harman-f

Brilliant , thank you , need to attend to a few things , then will test in about 2 hours from now , will advise on findings, need the logs even if it does work ?

[brucemiranda]

Wait let me rephrase , a part number for the MHI2Q

You might have more luck asking this question on an Audi forum as opposed to git hub

[Silintone]

Bruce, could I possible ask for your part number if your unit, the 8w number? Get Outlook for Android<https://aka.ms/AAb9ysg>

…

________________________________ From: brucemiranda ***@***.***> Sent: Saturday, March 18, 2023 12:20:35 PM To: Mr-MIBonk/M.I.B._More-Incredible-Bash ***@***.***> Cc: Silintone ***@***.***>; Mention ***@***.***> Subject: Re: [Mr-MIBonk/M.I.B._More-Incredible-Bash] Add Subwoofer control (knob) to MHI2 audio systems with internal amp and subwoofer (Issue #99) Wait let me rephrase , a part number for the MHI2Q You might have more luck asking this question on an Audi forum as opposed to git hub — Reply to this email directly, view it on GitHub<#99 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/A5SYOSYDJNNYWDPHTXX7JDDW4WD7HANCNFSM6AAAAAAUKLCW7Q>. You are receiving this because you were mentioned.Message ID: ***@***.***>

[brucemiranda]

A VCDS scan tells me that my 5F module is 8W5035035B

[Silintone]

Brilliant thank you.
Just to confirm
Yours looks like this at the back, plugs wise that is.
2x SD slots and a sim slot.
If I may ask


for a photo of your sound settings, the focus option like in my pic below

[harman-f]

https://mqb-blog.com/en/2023/04/17/sound-settings-editor/
Great job @NumberOneBot

If needed we could talk about a custom dataset import function for M.I.B.

[Silintone]

Hi Gents

@NumberOneBot , great work bud, thank you.

If i get a chance later this afternoon/evening , ill download and play with this and report back.

Thanks

[Silintone]

@NumberOneBot

I did a backup of the unit MHI2_ER_AUG22 ( latest possible firmware version ) Nvidea unit
Please see if the files required are here, no sure if im daft or not ( note this the the unit that doesnt allow the sub to show.
This unit across the board seems to be bad with the rear speakers been 1/2 or 1/3 the volume and freq range as the front doors

History of the dataset request

• Dataset request #156 (comment)

Link to my backed up files
https://drive.google.com/drive/folders/1slKffRdSqf8mU019FsJXkhF6gR-DVfNo?usp=share_link

[matekhr]

Hello, I have an Audi A4 B9 Avant with MHI2Q_ER_AUG22_P5092 MU1329 MMI with 10 speakers (8+center+subwoofer) 9VD Audi Sound System. It should be capable to enable subwoofer controls.
In one of earlier upgrades, I crashed my system and had to rebuild it and now I have some wrong datesets.
Here are my csv and log files attached. I think wrong datasets are on C0030014 and C0030022 (if i understand the problematics correct, both must have 30 as a first byte).
Can you please check my datasets and help me repair my unit.
Thanks in advance for your time and efforts.
MU1329-datasets.csv
MU1329-JTB-07409.03.181166005A.log

[matekhr]

Solved. Please ignore this post.

[x12345y]

Hello, i have same MHI2Q p5092. How you solve your problem? I try to activate subwoofer menu via More incredibal bash. All seema ok but no dial on menu... and i have now wrong dataset faults on 5F.
You activated subwoofer menu? Thanks

[Silintone]

@brucemiranda , share your thoughts please.

In desperate hopes for bass, and better sound overall ,ive done the following ,
replaced dash speakers with the ones you do , centre is stock , replaced rear doors ( made no difference still alot softer then the front)
measured my factory sub at 2 ohm and replaced it with a 2ohm 180w rms sub , no more distortion sound and more bass on the top end.

A friend was stripping out his a4 b8.5 , so he gave me the amp and connector block for amp.
Im going to be running a frankenstein test , to see if i can lnput signal and voltage to bring the amp to life in a test environment.
the signal going to the door speakers would be the input ( will simulate this with a hifi speaker output).

If this works then ill share my efforts and findings, if not my last effort will be to trade the car in for a 2020 a5 with B&O at the end of the year then no more sound issues

[AitorbnfFC]

Will be available for A4/A5/Q5/Q7 NVIDIA -MHI2 ER K3346 MU1438 in future? Working on it or is not possible?
And with BOSE sound could be compatible?

Thanks for all your work!

[Schnobi-Olli]

Hi everyone
I have done the the supwoofer gain +2 dB . And that has worked without a problem.
But the sound isn´t ok for me . I think the bass is to hard.
So i did revert to the orignial dataset . But that didn´t work . The backup file wasn´t found.
The backups are in the bakupdirectory. See the picture!!
What can i do ?
Thanks and Greetings
Olli

Subwoofer.pdf

[Schnobi-Olli]

Hi
I have solved the problem.

[Schnobi-Olli]

The Version v3.7.1 had a failure inside the backup scriptt.

[letty23]

Hallo zusammen,

kurze Nachfrage, wie kann das Subwoofer Menü denn angezeigt werden? in meinem MIB zeigt es unter multimedia_system diesen Punkt nicht an. Oder muss zuerst der Datensatz extrahiert werden und mit dem tool angepasst werden?

Aber erstmal wirklich großes Lob das die Entwickler.

[frtokio]

Please help.

2016 A3. 5.8" Display, no carplay or navigation.

Upgraded to a 7" 2019 A3 Display and MMI. Now have carplay,bigger screen, better graphics.

Everything works just fine, but the subwoofer seems to have gone silent and the option to adjust it is also gone. Any clues? I did have the option to adjust the subwoofer in the old display.

[x12345y]

So my unit can't have a separate subwoofer control?