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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > AUDIO/VIDEO + BLUETOOTH + Electronics/Alarm/Software > AVIN 8.8inch - who has this?



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      10-31-2019, 06:42 PM   #507
SlimE92
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Quote:
Originally Posted by whitewidow View Post
Quote:
Originally Posted by SlimE92 View Post
Yea according to the description in the link that he posted. It shows that the aux input is used for audio. I just did a combox retrofit but it left me the desire to watch videos on the screen. I just can't bring myself to use these android units without them having the audio integrated the logic 7.
I know he chose the aux input but he did not utilize the aux cable plugin to the aux port. So this must use the use by internal wiring in the harness?
Interesting..

I would love to see if this is the case.

That would mean that our audio issues are gone if so...
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      10-31-2019, 08:00 PM   #508
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I'm pretty sure if you have a Combox the android unit can use the MOST bus although I only have the base CCC system i.e.no amp and I've had it playing without the aux plugged in. I didn't follow up and I just now use a Cyrus DAC from the Android USB to aux along with the precise volume app and I'm more than happy with it.
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      11-09-2019, 04:18 PM   #509
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Originally Posted by Hibbyfor View Post
I'm pretty sure if you have a Combox the android unit can use the MOST bus although I only have the base CCC system i.e.no amp and I've had it playing without the aux plugged in. I didn't follow up and I just now use a Cyrus DAC from the Android USB to aux along with the precise volume app and I'm more than happy with it.
I like to get some confirmation on this. I have a 2010 e90 with cic idrive and logic 7. Aux and USB in the arm rest. No cd changer. Bluetooth handsfree calling only. No sure if I should just add a combox, or the eBay most.bluetooth, or one of these units. I'm would like all the features this unit provides but do not want degraded audio. If there is a way to tap in to the MOST with one of these like the eBay most Bluetooth does that would be ideal. Do any of these units do that or all go through the aux?
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      11-10-2019, 04:39 PM   #510
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The ebay box uses the cdc interface through the most bus
just like a oem cdc player would. There is no loss of fidelity.
The only thing negitive I would say about it is selecting the
source on the ebay box itself is kind of awkward.

It is essentially a cheap dension which also uses the Most Bus.

Also that is why both of these need the cdc programmed in.

http://www.e90post.com/forums/showth...4#post23244354
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      11-16-2019, 02:06 PM   #511
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Very interested in this option - the one thing putting me off the android head units is sound quality. Has anyone hooked one up via the optical connection in this way? I've got combox and CD Changer, so if it's possible it should be straightforward (it never is though is it :-)
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      11-19-2019, 06:04 PM   #512
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Quote:
Originally Posted by SlimE92 View Post
Interesting..

I would love to see if this is the case.

That would mean that our audio issues are gone if so...
Did anyone determine how he's getting audio without an aux cable? I read through the install procedure on that unit, and it still states that the aux cable must be plugged in.

https://www.aliexpress.com/item/3300...658f4d51F362Iz
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      11-20-2019, 03:29 PM   #513
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Hi

I believe the AUX input in the unit i bought is done through the quadlock connector pins 7 & 8 in the image below (just my speculation). As it can't be using the same circuit as the original car AUX connector because from there there is definite signal degradation.


I did conduct an experiment with 320kbps mp3 file.
Transfer it in android unit - good sound.
Stream it with Bluetooth - good sound (changed Bluetooth codec settings in phone developer options to LDAC).
Burn the same file into CD disk and play with navigation unit - good sound. I did try some other store bought CD-s that had pretty much the same overall sound grade.
I would say they all sounded equal.

Now i did not have anything connected to the car AUX input.


I discovered you can have one of the 1...8 buttons set as AUX input (in my case set 8 as Aux input).
1...7 are set as radio stations.

While android interface was open (and music playing) i pressed 1 and radio started playing while the actual display remained on the Android side. I find this awesome where you can listen to radio while kids could play some games on it with Playstation Dualshock controller (haven't tested with PS controller it but then again see no reason why it wouldn't work).

Then i connected phone through the car AUX port and played the same 320kbps mp3 file which sounded awful. Also tried some old ipod which was also bad. There is clear distinction to be heard. Almost like highs and lows are cut off and is very quiet on same volume. I'm thinking should get rid of this now obsolete and quite useless AUX hole and put something useful there like the double USBs.

Might pull everything apart for the USB experiment this weekend to see if it uses pins 7 & 8.

Hope this information is helpful.

Last edited by Captain Buumer; 11-20-2019 at 03:47 PM..
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      11-20-2019, 11:33 PM   #514
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Quote:
Originally Posted by Captain Buumer View Post
Hi

I believe the AUX input in the unit i bought is done through the quadlock connector pins 7 & 8 in the image below (just my speculation). As it can't be using the same circuit as the original car AUX connector because from there there is definite signal degradation.


I did conduct an experiment with 320kbps mp3 file.
Transfer it in android unit - good sound.
Stream it with Bluetooth - good sound (changed Bluetooth codec settings in phone developer options to LDAC).
Burn the same file into CD disk and play with navigation unit - good sound. I did try some other store bought CD-s that had pretty much the same overall sound grade.
I would say they all sounded equal.

Now i did not have anything connected to the car AUX input.


I discovered you can have one of the 1...8 buttons set as AUX input (in my case set 8 as Aux input).
1...7 are set as radio stations.

While android interface was open (and music playing) i pressed 1 and radio started playing while the actual display remained on the Android side. I find this awesome where you can listen to radio while kids could play some games on it with Playstation Dualshock controller (haven't tested with PS controller it but then again see no reason why it wouldn't work).

Then i connected phone through the car AUX port and played the same 320kbps mp3 file which sounded awful. Also tried some old ipod which was also bad. There is clear distinction to be heard. Almost like highs and lows are cut off and is very quiet on same volume. I'm thinking should get rid of this now obsolete and quite useless AUX hole and put something useful there like the double USBs.

Might pull everything apart for the USB experiment this weekend to see if it uses pins 7 & 8.

Hope this information is helpful.
Much appreciated probably going to get this soon. Do you think I will have issues with the harness in a 2010 e90 automatic?
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      12-07-2019, 09:16 PM   #515
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OK, so I have been looking to upgrade my CIC with iDrive and Harmon system and I think I'm just about convinced to go with one of these units but what is throwing me off is my car has the DCT transmission so it is short of like an auto shifting manual so should I pick the auto or the manual transmission option? What is the difference between the auto version vs the manual transmission unit?
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      12-09-2019, 11:13 AM   #516
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Quote:
Originally Posted by sudo4re View Post
OK, so I have been looking to upgrade my CIC with iDrive and Harmon system and I think I'm just about convinced to go with one of these units but what is throwing me off is my car has the DCT transmission so it is short of like an auto shifting manual so should I pick the auto or the manual transmission option? What is the difference between the auto version vs the manual transmission unit?
Is there any difference apart from software configuration? There should be one wire from the unit that senses reversing +12V.


Quote:
Much appreciated probably going to get this soon. Do you think I will have issues with the harness in a 2010 e90 automatic?
Don't think so. Harness has enough length to connect everything. In my case harness was pushing unit slightly upwards where it wouldn't sit flush with the lower panel. That eyesore didn't look good and asked for solution.

Another neat little trick i discovered is that we can use OBD WiFi dongle and stream data into the android unit! Really awesome!!!


We can also use BMW specific PIDs in torque app to display more sensors (in attachment). Will try this soon.
File was uploaded by FaRKle! to another forum - credits to him/her.
Attached Files
File Type: txt BMW 328d Full.csv.txt (2.1 KB, 17 views)

Last edited by Captain Buumer; 12-09-2019 at 11:41 AM..
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      12-12-2019, 06:07 PM   #517
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This looks like another unit which uses the optical connection for sound, instead of Aux

https://www.aliexpress.com/item/4000...719e9daevIsqwc
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      12-16-2019, 03:38 AM   #518
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I've just finished installing a unit I bought through AliExpress. Android 9.0 4G version. Seemed to be the highest spec one I could get.

First had trouble with sound not coming through, but there was a AUX cable that came from the Screen, and I just plugged that into the AUX input that comes from the new wiring harness and it all works fine. Great upgrade from CCC I had. Works fine with Logic7 and I couldn't be happier. I use my phone to hotspot a wireless connection. Only issue I have is that Spotify never starts from where I left off, either on a specific track or Podcast I'm listening to.
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      12-20-2019, 10:22 PM   #519
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Hi fellow Beemers ! I purchased Avin USA 10.25 head unit with CarPlay and the back camera. At first, I had the sound issue that most people talk about but it got way better. First, on the I-drive side the volume can not exceed the middle value (just leave everything at factory settings even treble and bass). Secondly, you need to play with the head unit audio settings until the sound cleans up. At this point, my sound was just like the stock sound profile but not loud enough. What I did made the sound a lot louder and clearer. I had a problem with the I drive showing that I needed an oil change when I didnít so I had to reset the engine oil Service message in I-drive. Weirdly, that fixed the sound for me. Ever since that reset, the sound is crisp and loud. Just wanted to share my experience.
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      01-05-2020, 08:28 AM   #520
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Very interesting. I may purchase for the wife's E90
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      01-10-2020, 12:43 PM   #521
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Quote:
Originally Posted by cannyjock View Post
This looks like another unit which uses the optical connection for sound, instead of Aux

https://www.aliexpress.com/item/4000...719e9daevIsqwc
I think it is actually using BT (or the CIC does). The Aux doesn't work in anything with a Combox since the aux on the back o the CIC isn't used. It is the one in the combox instead. I am working on some other theories on how to resolve that. (i.e. tapping into the aux cables right under the plug instead of the plug itself that would get rid of the sound killing caps and resistors in the Aux.
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      01-14-2020, 02:16 AM   #522
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Sound is the most important to me I know audio concerns have been brought up. I'd like to purchase the 10.25 inch version if there is any issue with the sound can anyone here chime in how we can ENHANCE this using something in addition?

Like a DSP processor or something and how would it work? Was wondering if anyone had that knowledge because I'd love to purchase this and if i have to buy something else in order to get amazing sound I would.
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