Sounds like it could possibly be the notorious Bose amp problem.

 

This post in the Knowledge Base might be worth a read as there's quite a lot of information on other Forum member's experiences and problems with the Xtron installation -

FAQ - Xtron Installation Information
https://www.ttforum.co.uk/forum/viewtop ... &t=1963311

If you need a factory reference these two SSPs may be useful -

FAQ - Audi TT (8J) Workshop Manuals & Self Study Programs
• SSP 382 Audi TT Coupé '07 - Electrical & Infotainment.pdf
• SSP 391 Audi TT Roadster.pdf
https://www.ttforum.co.uk/forum/viewtop ... &t=1833829

As a Roadster owner you may find these posts of interest too -

FAQ - The Ultimate Audi TT Mk2 (8J) Roadster Compendium
https://www.ttforum.co.uk/forum/viewtop ... &t=1813290

How to: Audi TT Mk2 (8J) Convertible Top Flap Servo R&R
https://www.ttforum.co.uk/forum/viewtop ... &t=1786641

 

Thanks for the replies

happychappy - Yes I have been reading about this :? Do you happen to know if I'd need an actual Bose amp replacement or could I get any amp to replace it if this is the problem?

SwissJetPilot - Thanks for all the links. I will be looking into these later. The issue I came across when I put the Xtron unit in was that the volume was ridiculously loud and it was only on the first volume setting!! I played around with the settings but nothing was working to lower the volume at all. I did some Googling to see how I could sort the issue out but to be honest I got fed up after a while and gave up! ...my car seems to be out to get me at the moment with various things! [smiley=bigcry.gif]

 

I have seen companies that can repair the amp

Luckily I can not recommend one as I have not had this problem yet

 

Definitely sounds like a Bose amp problem, esp with the afore mentioned popping sounds.
These are the repair guys everyone on here recommends...

https://boserepairexperts.co.uk/

I've not used them myself, as my amp unrepairable, but they seem very highly recommended. You don't say where you are located so I'm not sure if this will be an option for you or not.

Chris

 

Definitely sounds like a Bose amp problem, esp with the afore mentioned popping sounds.
These are the repair guys everyone on here recommends...

https://boserepairexperts.co.uk/

I've not used them myself, as my amp unrepairable, but they seem very highly recommended. You don't say where you are located so I'm not sure if this will be an option for you or not.

Chris

Just bought a 2010 mk2 Special edition coupe, and found out with the fader that i also have this problem with no sound from the rear except the thumb from the Sub.

I will try these guys out.

 

Thanks for the replies

happychappy - Yes I have been reading about this :? Do you happen to know if I'd need an actual Bose amp replacement or could I get any amp to replace it if this is the problem?

SwissJetPilot - Thanks for all the links. I will be looking into these later. The issue I came across when I put the Xtron unit in was that the volume was ridiculously loud and it was only on the first volume setting!! I played around with the settings but nothing was working to lower the volume at all. I did some Googling to see how I could sort the issue out but to be honest I got fed up after a while and gave up! ...my car seems to be out to get me at the moment with various things! [smiley=bigcry.gif]

You will need to replace like for like if you wish to retain the Bose system, there are amps that may work, but they are not cheap.

Here is one that may fit the Bill:-

https://www.zapco.com/adsp-z8-iv-8

 

What Audi calls "The Bose Sound System" is exactly that; a system. The 12 Bose speakers are matched to the 8 channel Bose DSP amp. There is also a microphone that in some way, in part, controls the DSP function.

You are likely to be disappointed if you try to replace the Bose amp with an aftermarket one whilst retaining the Bose speakers.

The cheapest way to get a fully functioning system will be to get your Bose amp repaired. Doing anything else will involve a new aftermarket amp and new, possibly fewer, speakers and will be much more expensive and involved.

 

Definitely sounds like a Bose amp problem, esp with the afore mentioned popping sounds.
These are the repair guys everyone on here recommends...

https://boserepairexperts.co.uk/

I've not used them myself, as my amp unrepairable, but they seem very highly recommended. You don't say where you are located so I'm not sure if this will be an option for you or not.

Chris

+1 for these guys, I used them literally a few weeks ago and posted a thread about this as I had the same issue with my rear speakers and bass out of sync.

They repaired the amp and sent it back to me and the difference is night and day! great team and would definitely recommend.

 

If your rear speakers aren't working consider it a blessing, you don't want those running anyway. In fact if the whole Blose systems quits one day, that's also gonna be a good thing in the long run since when you replace it with actual-good stuff, it's going to be a night and day difference!

 

Hi TT’s revenge - ah okay, the current system seems pretty good with the occasional Ministry of sound CD haha. Would you recommend stripping out this system and replacing with something else then ?

 

Some info from the KB on the Bose system and other Mk2 stereo speaker wiring diagrams -

FAQ - Bose Amp Technical Information and Repair Guides

Bose Amp Technical Information and Repair Guides - For anyone with questions about the various revisions of the Bose Amp over the Mk2 production years, or who wants to trouble shoot and repair their Amp, here's some additional information on those topics. As always, the workshop manuals can be...

www.ttforum.co.uk

FAQ - Mk2 Sound System Schematics & Fault Codes

The following fault codes are from the VAG fault code list. Images are from SSP382 (Coupe) and SSP391 (Roadster). Speakers - 00417 - Two-way speaker (mid and bass), front left-R101 00418 - Two-way speaker (mid and bass), front right-R102 00419 - Mid-range speaker, front left-R103 00420 -...

www.ttforum.co.uk