Microphone problem in bluetooth phone calls Junsun V1 Pro

[TorstenH]

Hello, everyone.
I have a Junsun v1 pro purchased in December.
The built-in microphone picks up very low sound. The radio when connecting the external microphone does not pick up any sound, neither in the external microphone nor in the integrated microphone. Of three different microphones that I have tried, I have only managed to get one of them to be heard, but this is the microphone that takes the hands-free wired headset of a smartphone, but it picks up very low sound as well and is not designed for this.
Can you help me?

You can try again after disconnecting the internal mic.

Junsun V1 MTK8259 - the adapter battle (Kia Ceed Jd) / OEM camera usage / reference thread

I bought the Junsun V1 head unit but my Kia Ceed JD had a OEM nav unit which isn't directly compatible to Junsun V1. So I re-wired the wiring harness based on the pins description of my original OEM navigation unit. I'm only modifying the wiring...

forum.xda-developers.com

 

[Arotogo]

You can try again after disconnecting the internal mic.

Junsun V1 MTK8259 - the adapter battle (Kia Ceed Jd) / OEM camera usage / reference thread

I bought the Junsun V1 head unit but my Kia Ceed JD had a OEM nav unit which isn't directly compatible to Junsun V1. So I re-wired the wiring harness based on the pins description of my original OEM navigation unit. I'm only modifying the wiring...

forum.xda-developers.com

Thanks for the reply.
The Chinese seller recommended that I unplug and plug that board. When I had it disconnected, I tried the microphone of the hands-free headphones of the smartphone. I didn't notice a difference.
I'll try to do it with a normal microphone.

 

[TorstenH]

Thanks for the reply.
The Chinese seller recommended that I unplug and plug that board.

Good idea. This will disable the background light of the buttons but that doesn't matter for a temporary test.

When I had it disconnected, I tried the microphone of the hands-free headphones of the smartphone. I didn't notice a difference.
I'll try to do it with a normal microphone.

Let's see if it's better with an external mic. My expectation is, the head unit works like a Bluetooth headset so its microphone (or mic connected to the hu) and its speakers (your cars speakers connected to the hu) are used.

 

[Arotogo]

Good idea. This will disable the background light of the buttons but that doesn't matter for a temporary test.

Let's see if it's better with an external mic. My expectation is, the head unit works like a Bluetooth headset so its microphone (or mic connected to the hu) and its speakers (your cars speakers connected to the hu) are used.

I check it and comment result.
Thanks

 

[Arotogo]

Good morning.
I have disconnected the integrated microphone board and connected the external microphone, it does not pick up any sound, it stays muted (the same as with the connected board). It is as if when connecting the external microphone the radio detected it, but did not know how to choose that microphone.

 

[TorstenH]

Good morning.
I have disconnected the integrated microphone board and connected the external microphone, it does not pick up any sound, it stays muted (the same as with the connected board). It is as if when connecting the external microphone the radio detected it, but did not know how to choose that microphone.

Usually both microphones are active in parallel. Can you test with another external microphone?
You could install a simple recorder app like

Audio Recorder - Apps on Google Play

Audio Recorder with custom path selection and editing, no ads, open-source

play.google.com

on the head unit to test the mic.

 

[Arotogo]

Today I have tested it with two different external microphones (one that is already installed from the previous 2din android and a new one that I bought). More than that, I had previously tried it with another external microphone and a hands-free wired headset from the smartphone (the latter did work, I picked up the sound very low but they worked).
Regarding the application to record sound and the tent installed. When the external microphone is connected, regardless of whether the built-in microphone is connected or not, it does not record any sound. Even turning the volume all the way up you can't hear anything.

 

[Arotogo]

Hi.
I've gotten it to work with the fourth mic I've tried. The latter is trs. With the ts and trs adapter on my computer it doesn't work.
In any case, although it is heard better, it is still heard very low. Do you know of a way to increase the microphone gain?

 

[TorstenH]

Hi.
I've gotten it to work with the fourth mic I've tried. The latter is trs. With the ts and trs adapter on my computer it doesn't work.
In any case, although it is heard better, it is still heard very low. Do you know of a way to increase the microphone gain?

Post in thread 'Microphone problem in bluetooth phone calls Junsun V1 Pro' https://forum.xda-developers.com/t/...one-calls-junsun-v1-pro.4166471/post-87963427

 

[Arotogo]

Thank you.
My radio doesn't give me that option, the code to access engineer mode is: 123456. Once inside and in hardware testing, it doesn't give me that option and the options it does have are none of it useful for me to correct the microphone.

 

[TorstenH]

Thank you.
My radio doesn't give me that option, the code to access engineer mode is: 123456. Once inside and in hardware testing, it doesn't give me that option and the options it does have are none of it useful for me to correct the microphone.

You should share your device specs by using CPU-Z.

 

[Arotogo]

Hola
La aplicación cpu-z no funciona en mi dispositivo, he instalado otra en su lugar.
Estos son los datos de la radio.
Adjunto video del modo ingeniería.

Mod translation:
Hello
The cpu-z app is not working on my device, I have installed another one instead.
This is the radio data.
Attached video of engineering mode.

Spoiler: Screen shots

 

[TorstenH]

Hola
La aplicación cpu-z no funciona en mi dispositivo, he instalado otra en su lugar.
Estos son los datos de la radio.
Adjunto video del modo ingeniería.

Mod translation:
Hello
The cpu-z app is not working on my device, I have installed another one instead.
This is the radio data.
Attached video of engineering mode.

Spoiler: Screen shots

View attachment 5877889View attachment 5877891View attachment 5877893View attachment 5877895View attachment 5877897View attachment 5877899View attachment 5877901View attachment 5877903View attachment 5877905
View attachment 5877909

Here you can download and install a newer firmware on your own risk
TS18.2.2_20221114.161350_WINDOW- THEME1.zip

OneDrive

onedrive.live.com

 

[Arotogo]

Will this update give me the microphone volume option?

 

[TorstenH]

Will this update give me the microphone volume option?

No glue because I don't have the same HU as you.

 

[Arotogo]

Ok. Thanks

 

[Arotogo]

Here you can download and install a newer firmware on your own risk
TS18.2.2_20221114.161350_WINDOW- THEME1.zip

OneDrive

onedrive.live.com

Hi.
I have installed the update without any problem. At first glance, everything seems to work fine.
But the microphone is still low volume and engineer mode still doesn't give the option to increase the volume.

 

[TorstenH]

Hi.
I have installed the update without any problem. At first glance, everything seems to work fine.
But the microphone is still low volume and engineer mode still doesn't give the option to increase the volume.

You connected already an external mic and disconnected the internal one. Right?

 

[TorstenH]

You already tried apps like

Hi.
I have installed the update without any problem. At first glance, everything seems to work fine.
But the microphone is still low volume and engineer mode still doesn't give the option to increase the volume.

You already tried apps like this:

Hear Boost: Recording Ear Aid - Apps on Google Play

Get Super Hearing! Record & Boost Sound. Microphone Volume Booster for Audio

play.google.com

 

[Arotogo]

You already tried apps like

You already tried apps like this:

Hear Boost: Recording Ear Aid - Apps on Google Play

Get Super Hearing! Record & Boost Sound. Microphone Volume Booster for Audio

play.google.com

I've tried three, but they only work with the app open in the foreground.
Perhaps it is that the application is not configured correctly.