Right speaker Problem radio app - MTCD Android Head Units Q&A

Hi,
I have a problem with the radio app. On Stock and malaysk rom, the Sound comes only out off the left speaker, the right one are noisi. On other apps its always working. Only the radio app has this issue.
Somebody a solution or a alternative radio app for me? [emoji848]
Gesendet von meinem ZTE B2017G mit Tapatalk

le_mi said:
On Stock and malaysk rom, the Sound comes only out off the left speaker, the right one are noisi.
Click to expand...
Click to collapse
This sounds more like a hardware issue. Likely defective FM decoder or internal wiring.
Obviously as you say from other sound sources it's working. So your unit is correctly cabled to the speakers and working. Your amplifier seems to be fine too. The only difference to the radio source is the origin of the sound being emitted from the FM tuner internally on your head unit. Assuming this the sound/noise on your right speaker will be produced by defective FM tuner and likely is just amplified as any other sound. So the volume level of the noise likely increases when you turn up the volume.
If this is the case I would recommend to send the unit back or have it repaired as this problem is not software related and cannot be fixed with another radio app.
The only work-around I could see is to use another radio source (e.g. external FM tuner) or use a source like DAB or internet radio. But your internal FM chip/wiring seems to be broken.

Thanks a lot for your statement. I'm in contact with the seller and hope they send me a new unit. They have offer me a partial payback but i want a unit wich is working for 100%.
DAB+ or other things are not an option for me.
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Related

Xperia Z5 series jack input issues

I decided to write a post here, on Z5 forum, because on Z5C section is dead.
I read many topics where people have the same problem as I do. My phone is a Z5 compact, but this problem have all Z5 series phones and many others from Sony.
Everything is presented in a movie. Sorry for my english.
Found someone so far a fix for this?
I have exactly the same issue with my desktop speakers on Z5 ( headset connected via Bluetooth).
I would appreciate to get a fix for this.
Gesendet von meinem E6653 mit Tapatalk
MKRashka said:
I have exactly the same issue with my desktop speakers on Z5 ( headset connected via Bluetooth).
I would appreciate to get a fix for this.
Gesendet von meinem E6653 mit Tapatalk
Click to expand...
Click to collapse
I use Roccat syva headphones to hear music, only one, that work, except this one from original box.
HP Desktop speakers: issued
Primax Desktop Speakers: issued
Supplied original Sony headphones: no issues
Beats Audio headset (from my old HTC Sensation Xe) no issues
Gesendet von meinem E6653 mit Tapatalk
someone? something?
This any help explaining the difference?
ricodredd said:
This any help explaining the difference?
Click to expand...
Click to collapse
it does not help, because i have for example 4 pairs of headphones with the same input and ONLY one of them work.. Same with aux cable
i have the exact same problem, but only when i plug it into my car. does it for like 5secs and just connects. but if i use headphone have never had a problem at all.
i figure since it only happens in my car im not overly fussed. usually takes the same amount of time to unlock my phone and start playing music, i use Shuttle so i set it to not auto start when headphones are plugged in.
im more annoyed that it has that notification that you cant get rid off!!! dont mind the headphones icon at the notification bar but just annoying that it stays in the notifications and you cant swipe to remove it.
I also have this problem with desktop speakers but never with headphones. Sometimes headphones will buzz a little when I spin the jack around but this is only temporary and if I blow into the headphone jack and put it in again there's no problem.
DuckDodger70 said:
i have the exact same problem, but only when i plug it into my car. does it for like 5secs and just connects. but if i use headphone have never had a problem at all.
i figure since it only happens in my car im not overly fussed. usually takes the same amount of time to unlock my phone and start playing music, i use Shuttle so i set it to not auto start when headphones are plugged in.
im more annoyed that it has that notification that you cant get rid off!!! dont mind the headphones icon at the notification bar but just annoying that it stays in the notifications and you cant swipe to remove it.
Click to expand...
Click to collapse
and no fix so far?..
If you wet the device, it can happen. Wait dry. If it are already dry, Wet the device again and wait to dry. The problem will be solved.
botanicfts said:
and no fix so far?..
Click to expand...
Click to collapse
not that i know of. like i said it only happens when i use my phone in my car and it only lasts for 5seconds and it goes away. so it doesnt really bother me as much.
when using headphones, like my sennheisers or my xiaomi's or the sony ones that came with the phone i dont get that issue.
but like i said im more annoyed with that stupid notification that just stays there when ever anything is plugged in =/
BR4DOKYBrazil said:
If you wet the device, it can happen. Wait dry. If it are already dry, Wet the device again and wait to dry. The problem will be solved.
Click to expand...
Click to collapse
I do not think that is hardware issue, because it's doesnt help me so far...

issues MTCD KGL, and investigation, noise, wifi, map audio, radio. other, screengloss

so planning to catch some of the commons issues I seen over the forums, and want to see where people managed to fix issues, and I will add my own from experience, I had read through the forums, and tried many of the suggestions:
this on Erisin KGL PX5 Unit for VW.
I had tried factory MCU firmware, Factory andriod system
then
latest MCU firmware Malaysk andriod system.
and while the unit improved. this did not have any effect on the following problems:
NOISE ISSUE
1- when unit isoff, no sound at all from speakers
2- when unit is on, but muted very low volume constant tune hissing sound.
3- slightly louder volume constant tune hissing sound when the unit is NOT muted (does not go up as volume in increased)
4- data like noise, (like old computer onboard audio, noise is relevant to how much processing is done), this does not go up as volume is increased
a) I had looked into lowering the aux input gain from factory menu, thinking it might be aux in being not connected causing some of the above
b) tried removing every single cable (apart from the harness that is powering the unit)
c) what I will try next, is to see if I can provide cleaner power to the unit, or improve the ground, I am not electrical engineer, so some advice is needed.
-----------------------------------------
"Here Maps" Audio skips milliseconds of speech.
so instead of saying "take the first exit at the next roundabout", it sounds like "take the fist exi at the nex rou bout"
I had tried downloading other voices, but the the problem persist.
I really have no idea why this is happening but will be nice to know how to solve it.
--------------------------------------------
dreaded wifi issue:
unit wifi is really bad although I literally parked next to the router, at my house, and there is only a window rather than a wall i between.
only remedy so far is to improve line of sight, however I read that improving the grounding, or getting better wifi antenna might solve the problem. so will give this a go later.
----------------------------------------------
Radio performance was appalling out of the box. so I purchased fakra radio adapter (powered)
this improve performance significantly, and now it picks up most of the radio channels.
still the radio is not as good as stock radio that came with the car.
as most channels have a bit of crackling sound, very few sound perfect.
----------------------------------------------
the screen is very reflective and barely visible in daylight, (I have light color leather seats) which makes the screen even worse.
so I am thinking of buying anti gloss screen filter.
I would think it will wash out the colors a bit, but I am willing to do that in order to see the screen properly.
as of night time, even when lowering brightness to min, its still bright, so I am thinking of getting something like Lux or automatic adjustment based on time (since the unit does not have ambient sensor)
------------------------------
2 months ago I had also a KGL / Erisin radio for VW with sound problems. You always heard a noise from the speakers. The Boise came from the AMP chip. Then i had a Ownice C500 that also Bad noise from the speakers. Now i have a Xtrons PX5 Unit and there is no noise. Additionally i have made an upgrade from TDA 7388 to Pioneer PA2030A, now the sound is perfect.
how did you upgrade the MOSFET?
are they pin compatible and you can desolder the old one and replace it with the new one?
zapedge said:
how did you upgrade the MOSFET?
are they pin compatible and you can desolder the old one and replace it with the new one?
Click to expand...
Click to collapse
Exactly. You can buy the AMP on eBay.
I've not audio issues, but for me radio reception is not so good, in particular the AF option works very bad!
Wifi performances are intermittent (I've a 4g wifi dongle; the signal comes and goes...) but when it goes, it downloads at full speed.
Screen is very reflective but lights are ok for me.
I have some problem with google maps app: it locks and I've to restart it 2 o 3 times... I don't know if it depends on the app or on the system.
mmmalas said:
"Here Maps" Audio skips milliseconds of speech.
so instead of saying "take the first exit at the next roundabout", it sounds like "take the fist exi at the nex rou bout"
------------------------------
Click to expand...
Click to collapse
I have the Erisin 6405V in my VW Golf mk5. All seems to be running fine, haven't noticed the wifi issues really as I mainly use a USB 3G Dongle I have connected.
For your navigation audio, goto Settings > Navigation Settings and change audio mode from switching to fixed(?) (basically the other option, I can't remember off the top of my head) I found this fixed my issue in google maps.
Also highly suggest to do all google play updates (maps/google app/play services) that's improved the stability of alot of the apps I use on my headunit.
I'm (I think) running their KGL_PX5_6.0(20170502) that erisin sent me to fix my bluetooth echo.
My -only- issue I'm finding. I had a previous headunit's I had tried and sent back for various reasons (xtrons and eonon) they detected my car doors open etc correctly but the erisin one doesnt seem to. Not that this is a problem, just wondering where the issue could be as the CanBus settings seem to be correct.
The hissing you hear is caused by the Wi-Fi. Turn off Wi-Fi and you will see that the noise is gone
turning off the wifi does not fix the issue.
as for mixing vs fixed mode in navigation audio, that did not make a difference.
I will open the unit soon to upgrade the amp, and maybe dampen the noise with a help with an electrical engineer
Ati_gangster said:
2 months ago I had also a KGL / Erisin radio for VW with sound problems. You always heard a noise from the speakers. The Boise came from the AMP chip. Then i had a Ownice C500 that also Bad noise from the speakers. Now i have a Xtrons PX5 Unit and there is no noise. Additionally i have made an upgrade from TDA 7388 to Pioneer PA2030A, now the sound is perfect.
Click to expand...
Click to collapse
I also have the noise, this is my second head unit, I had to return the old one due to issues with the buttons... Is swapping the mosfets very complicated? I am comfortable with soldering irons, have used it for other works... Do you have any pictures of the work done?
Thanks
zapedge said:
how did you upgrade the MOSFET?
are they pin compatible and you can desolder the old one and replace it with the new one?
Click to expand...
Click to collapse
It is not easy but possible.
Look at this thread, there are some photos.
http://forum.carjoying.com/thread-4...ar-view-camera-problem-changing-tda-7388.html
Good luck
j0nnymoe said:
I have the Erisin 6405V in my VW Golf mk5. All seems to be running fine, haven't noticed the wifi issues really as I mainly use a USB 3G Dongle I have connected.
For your navigation audio, goto Settings > Navigation Settings and change audio mode from switching to fixed(?) (basically the other option, I can't remember off the top of my head) I found this fixed my issue in google maps.
Also highly suggest to do all google play updates (maps/google app/play services) that's improved the stability of alot of the apps I use on my headunit.
I'm (I think) running their KGL_PX5_6.0(20170502) that erisin sent me to fix my bluetooth echo.
My -only- issue I'm finding. I had a previous headunit's I had tried and sent back for various reasons (xtrons and eonon) they detected my car doors open etc correctly but the erisin one doesnt seem to. Not that this is a problem, just wondering where the issue could be as the CanBus settings seem to be correct.
Click to expand...
Click to collapse
Hi, can you share the link to the Firmware ERISIN sent you? how did you contact them?
thanks in advance
mmmalas said:
so planning to catch some of the commons issues I seen over the forums, and want to see where people managed to fix issues, and I will add my own from experience, I had read through the forums, and tried many of the suggestions:
this on Erisin KGL PX5 Unit for VW.
I had tried factory MCU firmware, Factory andriod system
then
latest MCU firmware Malaysk andriod system.
and while the unit improved. this did not have any effect on the following problems:
NOISE ISSUE
1- when unit isoff, no sound at all from speakers
2- when unit is on, but muted very low volume constant tune hissing sound.
3- slightly louder volume constant tune hissing sound when the unit is NOT muted (does not go up as volume in increased)
4- data like noise, (like old computer onboard audio, noise is relevant to how much processing is done), this does not go up as volume is increased
a) I had looked into lowering the aux input gain from factory menu, thinking it might be aux in being not connected causing some of the above
b) tried removing every single cable (apart from the harness that is powering the unit)
c) what I will try next, is to see if I can provide cleaner power to the unit, or improve the ground, I am not electrical engineer, so some advice is needed.
-----------------------------------------
"Here Maps" Audio skips milliseconds of speech.
so instead of saying "take the first exit at the next roundabout", it sounds like "take the fist exi at the nex rou bout"
I had tried downloading other voices, but the the problem persist.
I really have no idea why this is happening but will be nice to know how to solve it.
--------------------------------------------
dreaded wifi issue:
unit wifi is really bad although I literally parked next to the router, at my house, and there is only a window rather than a wall i between.
only remedy so far is to improve line of sight, however I read that improving the grounding, or getting better wifi antenna might solve the problem. so will give this a go later.
----------------------------------------------
Radio performance was appalling out of the box. so I purchased fakra radio adapter (powered)
this improve performance significantly, and now it picks up most of the radio channels.
still the radio is not as good as stock radio that came with the car.
as most channels have a bit of crackling sound, very few sound perfect.
----------------------------------------------
the screen is very reflective and barely visible in daylight, (I have light color leather seats) which makes the screen even worse.
so I am thinking of buying anti gloss screen filter.
I would think it will wash out the colors a bit, but I am willing to do that in order to see the screen properly.
as of night time, even when lowering brightness to min, its still bright, so I am thinking of getting something like Lux or automatic adjustment based on time (since the unit does not have ambient sensor)
------------------------------
Click to expand...
Click to collapse
zapedge said:
Hi, can you share the link to the Firmware ERISIN sent you? how did you contact them?
thanks in advance
Click to expand...
Click to collapse
Here is the link: https://workupload.com/archive/49a8wjT
I contacted them via email.
I had took my unit to hardware lab, and powered it, and connected it to oscliscope.
it seems that there is 25khz noise on the speaker output all the time.
I had tested also pre amp output, and that have some noise too. so my guess is that good amp would cut off those high frequencies, and thats why it sounds better.
I will try to use ferrite cores, and see if it improve the situation, although I think it will not be able to cut low frequencies, but it never hurts to try espacilly this means no need to open the unit. I will report back later
j0nnymoe, can you tell us the MCU version for your unit after the update. thanks
Did you try 2.47 MCU? That's the latest for MTCD KGL PX3/PX5.
I have experienced noise issue #4 when I am using WiFi hotspot from my phone and phone is next to the unit.
mmmalas said:
I had took my unit to hardware lab, and powered it, and connected it to oscliscope.
it seems that there is 25khz noise on the speaker output all the time.
I had tested also pre amp output, and that have some noise too. so my guess is that good amp would cut off those high frequencies, and thats why it sounds better.
I will try to use ferrite cores, and see if it improve the situation, although I think it will not be able to cut low frequencies, but it never hurts to try espacilly this means no need to open the unit. I will report back later
j0nnymoe, can you tell us the MCU version for your unit after the update. thanks
Click to expand...
Click to collapse
This noise is so annoying, it makes me miss my OEM head unit, my car has an OEM Bose sound system with an amplifier under the seat and a subwoofer in the spare wheel, I don't know if this might be the issue for me, the subwoofer and all 8 speakers certainly work, as soon as I mute the head unit, the noise is gone, as soon as I step it up to Vol 1, I xan hear the noise, when the music or radio is playing, I can't really hear it but if the volume is up and it comes to the end of the song, I can hear it and it's bugging me... I don't know of replacing the AMP chip with a Pioneer chip (As mentioned before) would be the ultimate solution to get rid of that noise...
The other problem I am facing is the brightness of the screen in daylight, I have a Dasaita V600 (Specific to my 2012 Mazda3), I barely can see anything during the daytime, the brightness is cranked up to the max, are there any other settings to play around with? Contrast maybe etc...
Sent from my SM-N910F using Tapatalk
Sassokee said:
The other problem I am facing is the brightness of the screen in daylight, I have a Dasaita V600 (Specific to my 2012 Mazda3), I barely can see anything during the daytime, the brightness is cranked up to the max, are there any other settings to play around with? Contrast maybe etc...
Click to expand...
Click to collapse
Disable in Factory Settings brightness control by headlamp, it's something like that, but it made my screen brighter during the day.
stefcio007 said:
Disable in Factory Settings brightness control by headlamp, it's something like that, but it made my screen brighter during the day.
Click to expand...
Click to collapse
Thank you for the advice, I will try this later and​ report back.
Sent from my SM-N910F using Tapatalk
opened the unit today, nothing obvoius of whats wrong.
I noticed that the wifi antenna connected to realteck chip that claims antenna diversity, however the second antenna does not exist.
as for the car amp, still looking into the problem cause, might start digging into the pcb further to see where its going wrong.
Sassokee said:
This noise is so annoying, it makes me miss my OEM head unit, my car has an OEM Bose sound system with an amplifier under the seat and a subwoofer in the spare wheel, I don't know if this might be the issue for me, the subwoofer and all 8 speakers certainly work, as soon as I mute the head unit, the noise is gone, as soon as I step it up to Vol 1, I xan hear the noise, when the music or radio is playing, I can't really hear it but if the volume is up and it comes to the end of the song, I can hear it and it's bugging me... I don't know of replacing the AMP chip with a Pioneer chip (As mentioned before) would be the ultimate solution to get rid of that noise...
The other problem I am facing is the brightness of the screen in daylight, I have a Dasaita V600 (Specific to my 2012 Mazda3), I barely can see anything during the daytime, the brightness is cranked up to the max, are there any other settings to play around with? Contrast maybe etc...
Sent from my SM-N910F using Tapatalk
Click to expand...
Click to collapse
I have almost the same issues with the same unit for my Mazda 6 2015.
1. frustrating with the noise at low volume.
2. poor quality of WIFI signal (I'm sending my internet via mifi router)
3. poor quality of bluetooth phone calls.
i had wifi problems with my eonon ga6200f (kld-mtcd) just would not connect at all logged into my router and manually set the channel to channel 3 and its been fine since connects every time now.
i also have a problem with background sound when unit is not playing anything i have an infinity amp so im running through a spdif box from front left and right speakers so figured thats what the problem was been trying to find out if any of the pins not laid out in the manual are spdif out but not getting very far with seller or eonon

Bluetooth speaker issue

Since beginning when I owned the S8+ I discovered Bluetooth dosent play music on my little wireless speaker. I can connect headphones wireless but not speakers. It's first difficult to connect because the speaker doesn't show up in the list of connectable devices. And if it Shows up and I'm able to connect it dosent transfer any sound. Cool Bluetooth 5.0 dosent work very well
Just to see I tried pairing my bluetooth speaker with the S8+ and it wouldn't show up in the list, all that showed up was the car, watch and gear vr. A little more time today I'm going to look into this a little further.
ggrant3876 said:
Just to see I tried pairing my bluetooth speaker with the S8+ and it wouldn't show up in the list, all that showed up was the car, watch and gear vr. A little more time today I'm going to look into this a little further.
Click to expand...
Click to collapse
So it's not only my mobile I see
From0toHero said:
Since beginning when I owned the S8+ I discovered Bluetooth dosent play music on my little wireless speaker. I can connect headphones wireless but not speakers. It's first difficult to connect because the speaker doesn't show up in the list of connectable devices. And if it Shows up and I'm able to connect it dosent transfer any sound. Cool Bluetooth 5.0 dosent work very well
Click to expand...
Click to collapse
I have the S 8+
I have no issues with connecting
my Bluetooth.
Look at screenshot.
I have Bluetooth speakers, car radio
earbuds, Gear watch phones. etc.
No issues at all.
Attached list is just to demonstrate
Bluetooth 5.0 works fine for me.
Well the issue is not mainly because connection problems, it's more there is no music comming out of them. Btw the speaker is a xe mini capsule.
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From0toHero said:
Well the issue is not mainly because connection problems, it's more there is no music comming out of them. Btw the speaker is a xe mini capsule.
Gesendet von meinem SM-G955F not Tapatalk
Click to expand...
Click to collapse
All devices in my post (snapshot,
listed above) plays music just fine.
No issues.
willcor said:
All devices in my post (snapshot,
listed above) plays music just fine.
No issues.
Click to expand...
Click to collapse
Great that you have no issues.
From0toHero said:
Great that you have no issues.
Click to expand...
Click to collapse
The point I'm trying to make is
that Bluetooth v 5.0 should /does /can
will / work , just fine.
I would say that either you have
disabled something or device
has faulty firmware
or may be a feature that's
disabled..?
Also so many other options "can "affect performance. /connections /music quality.
You could have compatibility
issues eg Bluetooth v4. 0, Bluetooth 4.1,
Bluetooth v 5.0 etc
Yeah i did understand what you mean from the start. And thank you for testing it
The point is there are some others who have the same issue like the poster before you. And I remember seeing in a other forum the same issue this was the reason I tried to connect the speaker. My headphones connected just fine and even sending and receiving files and alike is ok. It's just the mini speaker. No deal breaker btw it's a minor issue.
From0toHero said:
Yeah i did understand what you mean from the start. And thank you for testing it
The point is there are some others who have the same issue like the poster before you. And I remember seeing in a other forum the same issue this was the reason I tried to connect the speaker. My headphones connected just fine and even sending and receiving files and alike is ok. It's just the mini speaker. No deal breaker btw it's a minor issue.
Click to expand...
Click to collapse
Yes, just trying to get you on right track.
What Bluetooth version, does the mini speaker have.
Bluetooth v 3...? or Bluetooth
4.0 or 4.1 or 4.2
Most probably you have to Google
to see.
You will most likely find the "issue" is on mini speakers side, than phone.?
Anyway good luck.
Yeah will find out sooner or later what's up thanx mate

Digtal high clipping noise with A2DP Bluetooth

Hey guys..
after some weeks of use of my new car stereo i just found out that the music streamed with the A2DP app is clipping in high frequencies.
I have an Erisin 5060 with PX5 Chip. It is the same with stock rom and Malaysk rom. I just use Viper4Android to make the sound a little better...
Anyone have the same issue and could explain me if it is Android related or is our hardware chip only crappy?
I just searched for any solution but i didnt found anything.
Thanks in advance
i believe this problem persists across all platforms (px3&px5).
i've been searching solution for months. couldn't find one. the problem related with bluetooth bitpool.
megamefta said:
i believe this problem persists across all platforms (px3&px5).
i've been searching solution for months. couldn't find one. the problem related with bluetooth bitpool.
Click to expand...
Click to collapse
hardware or software ?
Software..
kl
megamefta said:
Software..
Click to expand...
Click to collapse
but maybe some ideas about how to fix it? Maybe @Hal9k_ can try do something ?
It has to be the software because other music is clear only with Bluetooth its crap
Gesendet von meinem SM-G935F mit Tapatalk
Any update on a fix for this? it seems like it is a very common issue? I bought this headunit for the purpose of Bluetooth streaming but the quality is horrible.
No dev's for try do something. I think only @f1x can take a look for solution.
I have this issue with my PXE XRC unit. Anyone ever fixed this?
I'm not sure if its the same problem.
I have a PX5 Android 6 unit and it works fine with my Pixel2XL.
However on my friend's iPhoneX, there is high frequency distortion. Perhaps if ya guys can state what phones you using, we can identify a trend...
MasK said:
I'm not sure if its the same problem.
I have a PX5 Android 6 unit and it works fine with my Pixel2XL.
However on my friend's iPhoneX, there is high frequency distortion. Perhaps if ya guys can state what phones you using, we can identify a trend...
Click to expand...
Click to collapse
I have a Iphone 7 plus. But I also connected an android tablet and used that to stream audio, same results.
---------- Post added at 09:42 PM ---------- Previous post was at 09:13 PM ----------
I just took the unit out of my car and booted it on the bench. Hooked up the RCA connections and ran bluetooth a2dp streaming over the RCA connectors (assuming that bypasses the internal amplifier). It still sounds like crap. So the internal amplifier isnt the issue.
sev said:
I have a Iphone 7 plus. But I also connected an android tablet and used that to stream audio, same results.
---------- Post added at 09:42 PM ---------- Previous post was at 09:13 PM ----------
I just took the unit out of my car and booted it on the bench. Hooked up the RCA connections and ran bluetooth a2dp streaming over the RCA connectors (assuming that bypasses the internal amplifier). It still sounds like crap. So the internal amplifier isnt the issue.
Click to expand...
Click to collapse
Oh yes, that's for sure. It's not the internal amp nor DAC issue. My setup is also via RCA. This is a BT issue.
I was hoping updating the MCU and OS would help (looking at all the BT fixes in the release notes).. but this is sadly not the case.
Sent from my Pixel 2 XL using Tapatalk
nope. I tried MCU and I also tried OS updates. None of that helps. Is your unit using the md-725 module?
I also just took my unit apart to do the 7thfloor mod, but my XRC based unit doesnt have the WM8731S.. That is strange, I thought all Hui Feng type units had it.
More data points. My unit has the MD725 bluetooth. There's issues with the md-725 not working with google now, or other android apps with the mic. Mine does NOT have that problem. My MIC works with android apps.
I regret buying this unit.
Mine is this:
https://www.aliexpress.com/item/Das...963.html?spm=a2g0s.9042311.0.0.27424c4dQbjvdu
Honestly, not aware of what BT chip it's using. This BT issue isnt my main problem with the set as it works fine with my phone.
There are other DAC related issues which I'm trying to sort out..
oh i thought your issues are with BT. This thread's title says BT... Mine sounds perfectly everywhere else besides BT music

Hizpo MTCE_XRC Bluetooth A2DP Music Streaming Distorted in upper Frequencies

I picked up a MTCE_XRC unit, Mcu version is 2.72. Everything works great on the unit except ad2p. It sounds super distorted.
I went into the factory settings and saw the Bluetooth volume level was at 14, I lowered it to 10, and it sounds marginally better but I can still hear some distortion. Anything else I can do to help? Is it just crappy hardware?
sev said:
I picked up a MTCE_XRC unit, Mcu version is 2.72. Everything works great on the unit except ad2p. It sounds super distorted.
I went into the factory settings and saw the Bluetooth volume level was at 14, I lowered it to 10, and it sounds marginally better but I can still hear some distortion. Anything else I can do to help? Is it just crappy hardware?
Click to expand...
Click to collapse
Lower the volume of the phone Bluetooth to avoid saturation and enhance the volume of the unit.
Enviado desde mi SM-G950F mediante Tapatalk
check the equaliser settings and try another phone or app to play the music from
I tried lowering the volume in factory settings from 14 down to 5 and it still sounds like absolute crap. It sounds like a radio station. I have the md725 chipset.
Everything else works great, its just the a2dp sounds horrible
sev said:
I tried lowering the volume in factory settings from 14 down to 5 and it still sounds like absolute crap. It sounds like a radio station. I have the md725 chipset.
Everything else works great, its just the a2dp sounds horrible
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Try other phone...
Lower the Bluetooth volume from.phone...not from unit...you could be saturating the volume from source
Enviado desde mi SM-G950F mediante Tapatalk
Tried both, nothing helped. I think it is a hardware issue. Might return hardware
Im way past being able to return this unit. I've gone as far as unsoldering the md-725 built into the unit and betting a comfast wu-725 for USB. Didnt make a huge difference..
I also put the hal9k firmware on the unit. still sounding distorted. It's only in the upper frequencies, things like cymbals and such sound very distorted.
I also found a way newer XRC firmwares. V.2.80 and V.2.84. It still sounds distorted. But maybe it's a little better. Not sure.
It sounds almost like this is an hardware issue. I'd like to get another USB bluetooth dongle, maybe a SD-968. But I dont know what chipset that is or where to find one..
help!!!
Here is where to find latest XRC MCUs
https://yadi.sk/d/umCvHqCDzHccr/All dmcu for PX3, PX5, Intel Sofia3g/XRC?oldversion=57.0.2
I've had the same issue from day one with my dasaita unit to no avail, this seems to be a hardware issue regarding the Bluetooth so I doubt any software updates would help with this :/
roly01 said:
I've had the same issue from day one with my dasaita unit to no avail, this seems to be a hardware issue regarding the Bluetooth so I doubt any software updates would help with this :/
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Has been this way since MTCB.
my MTCC is pretty clear sounding. (In other car)
other people experiencing this problem, have you opened your unit?
My unit had a newer PX3 SOM that has a mini-hdmi port on it. Specificaly it also had a RockChip RK616 audio chip as well. Looking for commonalities with this issue.
I have same issue on my PX5 MTCE, BT music from my phone is distorted, I can hear taht should be related to sound compression or low bitrate.
till now I did not find a solution. Do someone succed with bluetooth USB dongle?
Nope, dont waste your time, its the same crap.
BT Sound Issues
I got a MTCE_XRC2 with the same issues.
Sound is distorted via a2dp and has high clipping.
The seller gave me un update, the sound is still crappy. I can listen music directly on the unit, so, this is not a biggy. The problem is when calling someone. They can hear me, but I cannot hear them well. The sound gets interrupted and distorted and it is really annoying.
Is my unit defective, should I return it? Or it s just bluetooth module they have in this unit?
Thanks!
Bright Blue said:
I got a MTCE_XRC2 with the same issues.
Sound is distorted via a2dp and has high clipping.
The seller gave me un update, the sound is still crappy. I can listen music directly on the unit, so, this is not a biggy. The problem is when calling someone. They can hear me, but I cannot hear them well. The sound gets interrupted and distorted and it is really annoying.
Is my unit defective, should I return it? Or it s just bluetooth module they have in this unit?
Thanks!
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I have the same unit from Hizpo. I'm searching for the OEM files. What seller did you use, and can you provide a link to the 'update' he provided? I'm ready to try Hal9k's rom, but without having a factory image to restore to, I don't want to jeopardize the warranty.
Sorry for the late reply, it’s not image of the actual android. It did not make any difference for me, so I don’t think you will need it either...

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