There's a couple of shops in the UK that can repair your Bose Amp. Start with this post as I believe there's some references to the repair shops -

FAQ - Bose Amp Technical Information and Repair Guides
https://www.ttforum.co.uk/forum/viewtop ... &t=1889737

 

Thanks but when I say it is toast I mean there is a black scorched patch both sides of the mother board the size of a jaffa cake between the connector and the transformer coil. The mother board is finished.

I am trying to avoid stumping up £400+ for a reconditioned unit when a re chip is not beyond my capabilities.

If I have to do that then it makes more sense to go the whole hog and opt for the Alpine SPC replacement.

 

Ah, okay. You might look for a used one on fleabay or maybe Alibaba or you local wrecking yard.

 

Heres a question;
I have looked at the wiring mods for the TT to use an android head and it seems that the bose system may be the same as other models.

The Halfords connection lists A3, A4, A6 & TT as the same system needing the same connector mod. Would it be a stretch to assume that the amp will be the same in each and perhaps the bracket would be different?

OK I know that the TT has an 8J part number (8J0035223) but what are the differences?

Anyone know?

 

Thanks but when I say it is toast I mean there is a black scorched patch both sides of the mother board the size of a jaffa cake between the connector and the transformer coil. The mother board is finished.

I am trying to avoid stumping up £400+ for a reconditioned unit when a re chip is not beyond my capabilities.

If I have to do that then it makes more sense to go the whole hog and opt for the Alpine SPC replacement.

If you have Bose I don't think the Alpine is a straight fit, says "Not compatible with Audi BOSE sound system."

Theres that company that repairs them for £189?

 

Now £180

https://boserepairexperts.co.uk/audi-bo ... 223-c-a-d/

 

Due to the burnt PCB repair is not an option.........

 

Angry now!

With a diminishing number of usable mother boards what will TT owners do for audio sound?

A4 amps have similar connectors, will they work as a swap? Probably not due to coding or software BS!

A6 amps are also similar but have an additional connector. Can this be used as an alternative?

Audi and Bose have culpability here........

 

Have you tried contacting Bose to see what they have to say?

 

There is an idea but with a 2008 product confidence is not high.

Will contact tomorrow and update if and when the reply.......

 

You are dealing with an antique. The system was dated even when it was new...
Maybe you'll get lucky, but I would be truly surprised if Audi / BOSE had any remaining repair stock.

TDA7575B MOSFETs haven't been manufactured in S036 style packaging for some time, so even with a 'repairable' board you'd need to find a source for NOS chips (which continue to get rarer every year).

It is understandable to try and rebuild stuff if it makes economic sense, but if your amp is a total loss you'd be better served replacing the whole lot, speakers and all.

 

I tend to agree with FNChaos, but as already mentioned there are a number of routes

1 - Revert to original Audi system, these seem plentiful but you will lose the subwoofer and front door midrange speakers

2 - Use a custom plug and play kit, the only one I am aware of is the Alpine SPC - 400TT

https://www.alpine.co.uk/p/Products/Sin ... /SPC-400TT

3 - Multi channel old school, use something you have laying around, only problem is this will be, more probable than not, at best a four channel

3 - A new high end digital amp covering all channels with the ability to custom trim the frequencies for each speaker and set time alignment phase etc, look at the Zapco ADSP Z8

 

Many thanks for the feedback.

I thought I had a sporting chance when i found replacement chips for £1.86 each but seeing the shorted PCB has just wasted my days calling scrap yards in vain.

I am almost resigned to ditching the Bose amp now and installing a generic replacement but see issues as the Bose architecture may not be straight forward.

More research and a flick through the Argos catalogue for an amp. :wink:

 

Many thanks for the feedback.

I thought I had a sporting chance when i found replacement chips for £1.86 each but seeing the shorted PCB has just wasted my days calling scrap yards in vain.

I am almost resigned to ditching the Bose amp now and installing a generic replacement but see issues as the Bose architecture may not be straight forward.

More research and a flick through the Argos catalogue for an amp. :wink:

Good luck, and make the most of it since Argos announced they won't be printing it anymore!

I spoke to the guy who fitted my alarm, depending on budget he fits to TT's with BOSE an Audison AMP and BIT Processor together with a Pioneer DAB head unit and Audison speakers. All of that is not cheap though! You can either have a separate amp/processor or something like the Audison Prima range does a combined one. Lot of wiring though.

Might be worth talking to these people;

https://carhomestereo.co.uk/audi-tt-audio-upgrade/

 

Great, thanks for the direction.

This has really spoiling the TT experience now. Our family all drive Audi and I have just sold my Q7 after 7 years of almost trouble free motoring. This, as a known and very common problem, sucks.

Should have been less blinkered and done more research but how to get a TT without this issue?

The Quest Continues.......

 

Is the answer (and one of the cheaper options if not cheap) not to just buy a second hand BOSE amp?

 

https://www.ebay.co.uk/itm/AUDI-TT-MK2- ... SwyH9fFB5z

 

If you want to try your luck with Bose directly, you can reach them at this email address...

AUTOMOTIVE_SUPPORT_EU@BOSE.COM

Here's their response to an email I sent them back in April 2019 regarding the Amp revision changes...

Dear Sir,

Thank you for your messages. We verified our data and found following information:

Amplifier 8J0 035 223 A is a different generation of amplifier - not compatible with your car.
Amplifier 8J0 035 223 C and D, same hardware but different software versions.

Based on the recent scan of your Audi TT we assume that you have software version 110. For amplifier generation C exists also a newer software version 120. Amplifier generation D have been improved with first software versions 150 and latest 160.

If you order officially replacement by your dealership, he should only be able to get amplifier generation D with software version 160, since amplifier generation C is not any longer available at Bose.

With best regards,

Bose Automotive GmbH
Customer Support Team Europe

 

Thanks Swiss Jet but buying dealer fresh at this stage or even buying a reconn one online would both be expensive band aid solutions for an out of date system with built in obsolescence.

At this point a new Android head with DAB etc that can feed an adequate aftermarket amp using the existing speakers seems a better investment.

I have just had a reply from a Bose expert and they suggest running a two amp set up as an alternative. This will use the popular and therefore cheaper 4 channel versions, bit more wiring, bit more fettling, bit more time in the Man Cave but ultimately a modern usable system.

 

@ Detailninja - Most people are ditching their OEM head units these days. As FNChaos and other have commented, the Bose is an antique and even the RNS-E I have in my 2007 was outdated when it was new. Fortunately the Bose issues don't seem to be so much of a problem with Roadsters because they are better protected from the wet.

But there's a couple of really good posts like this one if you need any advice on what to go with as a replacement -

Ultimate After-Market Head Unit Review Thread
https://www.ttforum.co.uk/forum/viewtop ... t=ultimate

And I believe there's one just for Xtrons too if you run a search for it. Good luck!

 

Thanks will do the research later and try and talk the missus into it. :roll:

I am almost done with the final paint coating so once that is done 100% I can get cracking.

 

More research and a flick through the Argos catalogue for an amp. :wink:

Please tell me you are joshing...

Keep an eye out at Halfords for one of their sales and don't forget the extra 10% off if an AA member.

 

Halfords is always and option and I have a trade card but there are discount restrictions on electricals.

Argos it is then.....

Argos is the betting shop of the retail trade; When you enter you study the form then use a mini pen to fill in a slip before handing it to a grumpy old woman. While waiting you watch the screen in hope of a result. Then you collect your prize.

 

Yes, trade card does not offer discounts on in car electrical...

But you do get *10% off with an AA card, not the alcoholics kind...

*download voucher on app.

 

https://www.ebay.co.uk/itm/AUDI-TT-MK2- ... SwKtxfJUaQ