Installed Xtrons headunit but....

[dalmation53]

I'm happy with the outcome everything works exept Bluetooth music or my Aux in cord connected to phone. It used to work prior to install.. No soundscon speskers when i go on media and aux in. Everything on unit is connected en functioning. What could be the cause of this. And yes fm and Am work fine. 20230610_224552.jpg

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[Smac770]

Bluetooth music. What device is the phone Bluetooth connected to? That aftermarket device or the car? Or a Bluetooth device on the AMI port? What is music audio output set to on the phone (I'm assuming it can be controlled as to what output device it routes). The device is just a screen; the AMI port is still connected to the radio head unit (unless the aftermarket wiring changed that). You'd need to see where the AMI port pins are actually going in the new wiring. The smart thing would be they route to the device, then the device routes to the AMI input so you can just set the radio to External Audio and leave it and hear everything. But it could well be the device doesn't do, but still steals the AMI pins on the radio, meaning the AMI port is now unconnected.

Too hard to speculate without knowing what all happened to the wiring configuration.

[DrGER]

A close examination of the "ISO Wiring Harness" would help tease out how the device integrates into the car for audio out and CAN bus, for example. But they also mention an "Audio Extension Cable", which looks to be how the Xtrons device gets its (analog) audio out to the MMI main unit. A published wiring diagram would be helpful here, too. --g

[bastafari]

Can I ask why you chose this unit opposed to another like rsnav?

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[dalmation53]

Can I ask why you chose this unit opposed to another like rsnav?

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I wanted an oem inside unit not en external unit that looks very aftermarket plus in colombia thives will break the window to steal it. So an internal unit is mot favorable

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[Smac770]

RSNAV has always had an 8.8" factory look unit also; they are replacing it now with 8.9":
https://rsnav.com/collections/s3-and...a5-s5-q5-sq5-1
I think the factory look is the way I'd go, though it'll mean being a few more inches out of reach.

In either case, with Concert/Symphony, it seems both products integrate the audio output only via an analog out that must be routed into the factory system input selection.

[dalmation53]

Guys so upon further inspection my guy installer did not use this cables. Both of them but my car doesn't have that Audi music interface to plug in that cable but it does have Aux In. This is what he didnt use. Is he suppose to use this extension for Aux? Screenshot_20230612_042702_eBay.jpgScreenshot_20230612_043036_eBay.jpg

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[dalmation53]

Bluetooth music. What device is the phone Bluetooth connected to? That aftermarket device or the car? Or a Bluetooth device on the AMI port? What is music audio output set to on the phone (I'm assuming it can be controlled as to what output device it routes). The device is just a screen; the AMI port is still connected to the radio head unit (unless the aftermarket wiring changed that). You'd need to see where the AMI port pins are actually going in the new wiring. The smart thing would be they route to the device, then the device routes to the AMI input so you can just set the radio to External Audio and leave it and hear everything. But it could well be the device doesn't do, but still steals the AMI pins on the radio, meaning the AMI port is now unconnected.

Too hard to speculate without knowing what all happened to the wiring configuration.

I don't have or see an Ami port on the car. Only Aux in brother....

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[dalmation53]

No Ami port in the car so i'n basically focked? Ordered an android unit and won't have sound 20230612_050130.jpg20230612_050133.jpg

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[DrGER]

I don't have or see an Ami port on the car. Only Aux in brother....

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Your Symphony radio has AUX-IN on the FAKRA QuadLock connector to the radio, which runs to the port/jack in the armrest box (through the car wiring harness).
It seems to me a better way to do this (than running their "audio extension cable to the jack") is to go directly from the add-on box to the QuadLock connector. Check the wiring diagrams for specific pins here (I believe it's on the green terminal block). --g

[Smac770]

R199 AMI and R199 AUX will both have analog audio lines going into Concert/Symphony on the same pins. The R199 AMI device for CAN additionally has connection to the Infotainment CAN bus, that's all. I don't know if there's any data transmitted over CAN, or if it's only control. For example, if you have a USB drive with music files, is the parsing of the file system and the conversion to analog audio actually occurring in the AMI device, producing an analog audio output to the radio? It would seem to be most likely so. Rather than transmitting USB digital data stream over CAN to the Concert/Symphony for processing, decoding, and conversion.

The new RSNAV series 4 apparently now supports not needing to connect its audio output to the AMI/AUX port to feed back into the factory system for playback. I'm not sure by what means its dumping the data directly to the J794; it's not on the MOST ring. But this is only for MMI 3G. MMI 2G and Concert still need the traditional external 2-ch analog audio path.

The Xtron unit appears to be the same as the RSNAV in this regard. You're going to have to connect the Xtron analog audio output to the analog AUX input port, be it to an AUX R199, or to an AMI R199 with AMI AUX cable.

[DrGER]

My guess here is that the aux-in port in the center console box is wired *directly* to green terminal block T12s in the FAKRA QuadLock connector (T12s/1 is analog line-in L, 2 is ground, 7 is R). I don't understand why these Chinese vendors just don't add this to their FAKRA QuadLock wiring harness adapters if the after-market display boxes are intended to be used with Concert/Symphony radios.

If the OP finds his Xtrons device to be working to his satisfaction, he should consider connecting the analog line audio out from the Xtrons box to terminal block T12s, directly. --g

[dalmation53]

My guess here is that the aux-in port in the center console box is wired *directly* to green terminal block T12s in the FAKRA QuadLock connector (T12s/1 is analog line-in L, 2 is ground, 7 is R). I don't understand why these Chinese vendors just add this to their wiring harness adapters if the after-market display boxes are intended to be used with Concert/Symphony radios.

If the OP finds his Xtrons device to be working to his satisfaction, he should consider connecting the analog line audio out from the Xtrons box to terminal block T12s, directly. --g

So i have to remove the screen again and plug my Aux into the wiring harness that it came with?

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[Smac770]

You're skipping the step of testing if that's even worth doing. Just plug the thing into your existing AUX port and see what happens. Did you ask the installer why they didn't connect the audio?

[dalmation53]

You're skipping the step of testing if that's even worth doing. Just plug the thing into your existing AUX port and see what happens. Did you ask the installer why they didn't connect the audio?

Smac i'm conffused. What do you want me to plug in into my Aux port?

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[Smac770]

They seem to have in interesting direct TPMS high presentation and direct TPMS sensor system, both external or internal. Don't think RSNAV has that functionality.

https://xtrons.com/tyre-pressure-mon...-system-tpms08
https://xtrons.com/tyre-pressure-mon...-system-tpms07
https://xtrons.com/community/index.p...-android-unit/

I am very unimpressed with their site from a support/documentation perspective. They have nothing, absolutely nothing, for the QEA units.
The $400 price on their website is not enticing, but the near $300 price on their aliexpress store is a bit hard to ignore.

So can't advise you how the thing is suppose to connect audio wise.

[Smac770]

https://cdn.shopify.com/s/files/1/19...f?v=1662349394

Note page 2, it showing the analog audio connection circled with a. You need to find that and run that to the AUX input.

DrGER's point is why do they bother with that at all? Why not just run the bare wires (with crimp terminals) to the quad block go-between on the Concert unit side plug. It would seem to make for a cleaner installation.

Also note the other point on that page, checking the pins and make sure everything looks good.

Actually, start there. If you plug anything into your AUX port and select Media-AUX, do you get playback? Is the wiring still good?

[dalmation53]

https://cdn.shopify.com/s/files/1/19...f?v=1662349394

Note page 2, it showing the analog audio connection circled with a. You need to find that and run that to the AUX input.

DrGER's point is why do they bother with that at all? Why not just run the bare wires (with crimp terminals) to the quad block go-between on the Concert unit side plug. It would seem to make for a cleaner installation.

Also note the other point on that page, checking the pins and make sure everything looks good.

Actually, start there. If you plug anything into your AUX port and select Media-AUX, do you get playback? Is the wiring still good?

So the one circled in blue is the one that i need to run it all the way to my aux port? Thats why the cable is so long? Hmm i think he jammed it in there somewhere i will have him tomorrow remove the screeb again and i will update tomorrow. Screenshot_20230613_031152_Samsung%20Notes.jpg

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[Smac770]

I can't find anything regarding legitimate installation documentation, or even references, for the Xtrons QEA units. Straight up nothing, not even from Xtrons themselves. So I have no idea what's behind the screen unit. But it's not going to be anything revolutionary. It's going to be generally the same as every single other Android tablet replacement solution for Audi B8. How did the installer have any clue what to do with this thing?