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Ultimate OEM & After-Market Head Unit Review

196K views 401 replies 121 participants last post by  Bryan621  
Hi Folks

Firstly I must apologise if what I ask is covered in the 18 pages of posts previous. The very first unit reviewed on page 1 looks to be almost identical (apart from mine being non-CD) to the unbranded unit I have bought through aliexpress: 119.68US $ 32% OFF|4G RAM 64G ROM Android 10 Car Radio GPS Navigation 2din Autoradio WIFI BT Multimedia Player for Audi TT MK2 8J 2006 2012 RDS DSP|Car Multimedia Player| - AliExpress
I think perhaps the big difference is that the huge discount buying from aliexpress is offset by things not being 'sorted' & ready out-of-the-box. At the moment I am only getting a stereo output L&R so I can only connect the front or rear speakers, but not both. There is a wiring diagram on the Audi unit, and one on the Aliexpress listing, but still it is confusing. The Audi unit has 'LINE' FL FR RL RR & Earth with very small pins but also LF- LF+ RF- RF+ with large pins in a block of 8 with the other 4 N.C.
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I presume that there is no other amplifier hidden in the car as standard. So which of the connector pins from the Audi unit are actually sending the signal to the speakers?

Thanks for any help
Andrew
 
Thanks Tony, No Bose badges and will have to check on the centre speaker in the dash. Makes sense as the only RR & RL connects on Audi unit are line ones with tiny pins and shared earth, but also strange that the Audi unit is so large at 17cm deep and 2din high. It must have at least a stereo amp built it even if it doesn't use it. As the new unit only has L & R in 'line' then I may be stuffed. It does have powered (I believe) FL,FR,RR,RL, but you don't want to go sending them to the car's amp I bet!

What this cheep Chinese (although everything is made there now) needs is good instructions. If I do manage to work it out so it all works I'll post it all here and review the unit.