Remote/Amp Connect and aux in

narcotico

I am installing Duduauto 7 in Audi A3 8P 2011.
I have next questions about title connections.
1) Remote/Amp Connect tagged in cables. There are 2 amp connect cables (one from rcas plug and other from main plug where gnd, power, etc). What are differences between them? Where Connect external amp?
2) In Audi A3 specific cable sent, there are 2 aux in (4 rca), It looks they do not work with oem aux in, so I would like to know for what use are thinked.

Thanks.

dudu-lai

narcotico If there is no sound, you need to connect the AMP control line. Otherwise, no connection is required. Please take a photo of the RCA interface you mentioned so that I can check it.

narcotico

Based on https://wiki.dudu-auto.com/en/%E5%AE%89%E8%A3%85%E6%95%99%E7%A8%8B/%E8%BD%A6%E6%9C%BA%E6%8E%A5%E7%BA%BF%E5%9B%BE
There are 2 cables tagged as "amp Connect" and blue, one in A connector and one in G connector, what is the differences between them?
I have connected to A and whem turn off radio a strong "POP" shows Up and It looks my speakers Will be blown/burnt.
This is the most important issue, i am afraid of my speakers.

Thanks.

dudu-lai

narcotico
G8 is the radio antenna power supply, not the AMP control line

dudu-lai

Back to the previous topic, the DUDU only has one amp control line. Why did you connect it? Did you install an amp? No sound?

narcotico

Ok, now clear. In Audi A3 harness G8 is tagged as amp Connect too. Sometimes ant and remote make same funtion, what is differences between these connections internal or technically?
I have sound with amp but when turn off head unit/car, a strong sound "POP" sounds. It does not happen with my previous head unit. Is there some delay or config to avoid It?

dudu-lai

narcotico Do you hear music only after connecting the AMP control cable?

JhonnyD

The pop sound after turning off the car have many users.
It occurs some month ago. And it seems not to be fixed.
It is so annoying.
It pops when rebooting.
And now it pops when turning off the car.
Never had this with any other head unit s i had and i tried a lot of android head units the past years.

narcotico

After spending more time making tests, I have found next issues.

My install is:

Car: Audi A3 2011
Head Unit: Duduauto 7 with version 3.6 stable (Kenwood head unit before with connects 2 interface/adapter)
DSP and amps: Helix M four DSP + Alpine PDX V9
All speakers are powered by aftermarket amp, none by headunit.

One of main cause for buying Duduauto is for using digital output (optical).
1) My car has a little center speaker original/oem. With kenwood when front speakers are connected to external amp, this speaker does not sound, it is the way. With Duduauto, this speaker always sounds (with fan/amplifier enable or disable in software).
2) When use remote from rca cable (A) only works if fan/amplifier is enabled in software. I want use optical and disable internal amp. It has no sense this remote depends on internal amp when there are other outputs (like digital ones). If I use G8 instead of remote from rca, the amps stay power on two minutes after turn off Duduauto (and sound noise meanwhile).
3) "Pop" noise when turn off the head unit. After adjust the system is not as strong as before, but it is so annoying.

Thanks

dudu-lai

narcotico Hello, using a Type A connector (AMPcont cable), you can turn this cable on/off through your device's amplifier settings (equivalent to a controllable ACC cable). This does not necessarily mean you are using the device's amplifier output.

Whether you are using RCA or optical coaxial, you can connect the AMPcont cable to the power ACC input (control line) of your aftermarket amplifier.

Use this method, then update to MCU version 20250715 to see if the popping sound when turning off the console is resolved.